/* roulang page: index */
:root{
  --primary:#2E6BD6;
  --primary-light:#5B8DEF;
  --primary-bg:#F0F4FB;
  --accent:#C8102E;
  --accent-dark:#A00D24;
  --text-main:#1F2933;
  --text-secondary:#5F6B7A;
  --text-muted:#8A94A6;
  --bg-page:#F7F9FC;
  --bg-card:#FFFFFF;
  --border:rgba(23,27,32,0.08);
  --star:#F5A623;
  --radius-card:16px;
  --radius-btn:999px;
  --shadow-card:0 4px 20px rgba(24,39,75,0.06);
  --shadow-hover:0 12px 32px rgba(24,39,75,0.12);
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --font-num:Inter,"DIN Alternate","Arial Narrow";
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--text-main);
  background:var(--bg-page);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-light)}
button,input{font-family:inherit}
.container{max-width:1200px;padding-left:20px;padding-right:20px}

/* header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  min-height:72px;
  background:rgba(255,255,255,0.7);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  backdrop-filter:blur(20px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,0.4);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,0.98);
  box-shadow:0 4px 24px rgba(0,0,0,0.05);
}
.navbar{
  padding:0;min-height:72px;
}
.navbar-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--text-main);
}
.navbar-brand:hover{color:var(--primary)}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,#C8102E 50%,#1F2933 50%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:13px;font-weight:800;letter-spacing:-1px;
  flex-shrink:0;
}
.navbar-nav .nav-link{
  padding:22px 16px;
  font-size:15px;font-weight:500;color:var(--text-secondary);
  position:relative;
  transition:color .2s ease;
}
.navbar-nav .nav-link::after{
  content:"";position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--primary);
  transition:width .25s ease;
}
.navbar-nav .nav-link:hover{color:var(--primary)}
.navbar-nav .nav-link:hover::after{width:20px}
.navbar-nav .nav-link.active{color:var(--primary);font-weight:600}
.navbar-nav .nav-link.active::after{width:20px;background:var(--primary)}
.btn-download-sm{
  background:var(--accent);color:#fff;border:none;
  padding:8px 22px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-download-sm:hover{
  background:var(--accent-dark);color:#fff;
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(200,16,46,0.3);
}
.navbar-toggler{
  border:none;outline:none;padding:6px;
}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler .toggler-icon{
  display:block;width:24px;height:2px;background:var(--primary);
  margin:5px 0;border-radius:2px;transition:all .25s ease;
}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(2){opacity:0}
.navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:991px){
  .navbar-collapse{
    background:#fff;
    border-radius:0 0 16px 16px;
    box-shadow:0 12px 32px rgba(0,0,0,0.08);
    padding:16px 20px 24px;
    margin-top:0;
  }
  .navbar-nav .nav-link{padding:12px 0;font-size:15px}
  .navbar-nav .nav-link::after{display:none}
  .btn-download-sm{margin-top:12px;width:100%,text-align:center}
}

/* hero */
.hero-section{
  position:relative;
  padding:160px 0 100px;
  background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  min-height:680px;
  display:flex;align-items:center;
}
.hero-section::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,#fff 0%,rgba(247,249,252,0.92) 70%,#F7F9FC 100%);
}
.hero-section .container{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,0.85);
  border:1px solid var(--border);
  padding:6px 16px;border-radius:var(--radius-btn);
  font-size:13px;color:var(--text-secondary);
  margin-bottom:20px;
  box-shadow:0 2px 12px rgba(0,0,0,0.04);
}
.hero-badge i{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  display:inline-block;
}
.hero-title{
  font-size:46px;font-weight:700;line-height:1.2;
  color:var(--text-main);margin-bottom:16px;letter-spacing:-0.5px;
}
.hero-title span{color:var(--primary)}
.hero-subtitle{
  font-size:18px;color:var(--text-secondary);
  max-width:520px;margin-bottom:32px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary-custom{
  background:var(--accent);color:#fff;border:none;
  padding:14px 36px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .25s ease;
  box-shadow:0 4px 16px rgba(200,16,46,0.25);
}
.btn-primary-custom:hover{
  background:var(--accent-dark);color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(200,16,46,0.35);
}
.btn-outline-primary-custom{
  background:transparent;color:var(--primary);
  border:2px solid var(--primary);
  padding:12px 32px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .25s ease;
}
.btn-outline-primary-custom:hover{
  background:rgba(46,107,214,0.05);color:var(--primary);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(46,107,214,0.15);
}
.btn-primary-custom:active,.btn-outline-primary-custom:active{
  transform:translateY(1px);
  box-shadow:0 2px 8px rgba(0,0,0,0.1);
}
.btn-primary-custom:focus-visible,.btn-outline-primary-custom:focus-visible,.btn-download-sm:focus-visible{
  outline:3px solid rgba(46,107,214,0.4);outline-offset:2px;
}
.hero-visual{
  display:flex;justify-content:center;align-items:center;position:relative;
}
.hero-phone{
  width:280px;height:520px;margin:0 auto;
  background:url('/assets/images/coverpic/cover-2.png') center center / cover no-repeat;
  border-radius:36px;
  box-shadow:0 24px 60px rgba(24,39,75,0.18);
  position:relative;
  overflow:hidden;
}
.hero-phone::after{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:120px;height:24px;background:#1F2933;border-radius:0 0 16px 16px;
}
.score-badge-group{
  position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);
  display:flex;gap:16px;
}
.score-badge{
  background:rgba(255,255,255,0.95);
  border:1px solid var(--border);
  border-radius:14px;
  padding:10px 18px;
  box-shadow:0 8px 24px rgba(0,0,0,0.06);
  text-align:center;
}
.score-badge .num{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--primary);display:block}
.score-badge .label{font-size:12px;color:var(--text-muted)}
@media(max-width:991px){
  .hero-section{padding:130px 0 80px;min-height:auto}
  .hero-title{font-size:34px}
  .hero-visual{margin-top:40px}
}
@media(max-width:575px){
  .hero-section{padding:110px 0 60px}
  .hero-title{font-size:26px}
  .hero-subtitle{font-size:15px}
  .hero-actions .btn-primary-custom,.hero-actions .btn-outline-primary-custom{width:100%}
}

/* section common */
.section{
  padding:80px 0;
}
.section-head{
  margin-bottom:48px;
}
.section-eyebrow{
  display:inline-block;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-bg);
  padding:4px 14px;border-radius:var(--radius-btn);
  margin-bottom:12px;
  letter-spacing:0.5px;
}
.section-title{
  font-size:32px;font-weight:700;color:var(--text-main);
  margin-bottom:12px;line-height:1.3;
}
.section-desc{
  font-size:16px;color:var(--text-secondary);
  max-width:640px;
}
@media(max-width:575px){
  .section{padding:48px 0}
  .section-title{font-size:24px}
}

/* value cards */
.value-section{
  background:#fff;
}
.value-card{
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:28px 24px;
  height:100%;
  background:var(--bg-card);
  transition:box-shadow .3s ease,transform .3s ease;
  position:relative;
  overflow:hidden;
}
.value-card::before{
  content:"↗";
  position:absolute;top:16px;right:16px;
  font-size:18px;color:var(--primary);
  opacity:0;transform:translate(4px,-4px);
  transition:all .3s ease;
}
.value-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.value-card:hover::before{
  opacity:1;transform:translate(0,0);
}
.value-icon{
  width:48px;height:48px;border-radius:12px;
  background:var(--primary-bg);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.value-icon svg{
  width:24px;height:24px;stroke:var(--primary);
  fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.value-card h3{
  font-size:19px;font-weight:600;color:var(--text-main);
  margin-bottom:8px;
}
.value-card p{
  font-size:14px;color:var(--text-secondary);line-height:1.7;margin:0;
}

/* carousel */
.carousel-section{
  background:var(--primary-bg);
}
.feature-carousel{
  max-width:760px;margin:0 auto;
  position:relative;
}
.feature-carousel .carousel-item{
  text-align:center;
  padding:0 20px;
}
.feature-shot{
  width:100%;height:360px;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  margin-bottom:24px;
  background:linear-gradient(180deg,#f0f4fb 0%,#e3eaf5 100%);
}
.feature-shot img{
  width:100%;height:100%;object-fit:cover;
}
.feature-name{
  font-size:20px;font-weight:600;color:var(--text-main);
  margin-bottom:6px;
}
.feature-desc{
  font-size:14px;color:var(--text-secondary);
  max-width:480px;margin:0 auto;
}
.feature-carousel .carousel-indicators{
  position:static;margin-top:24px;
}
.feature-carousel .carousel-indicators button{
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);opacity:0.3;
  border:none;transition:all .3s ease;
}
.feature-carousel .carousel-indicators button.active{
  opacity:1;transform:scale(1.2);
}
.feature-carousel .carousel-control-prev,.feature-carousel .carousel-control-next{
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,0.8);
  border:1px solid var(--border);
  top:50%;transform:translateY(-50%);
  opacity:0.85;transition:all .3s ease;
}
.feature-carousel .carousel-control-prev{left:-60px}
.feature-carousel .carousel-control-next{right:-60px}
.feature-carousel .carousel-control-prev:hover,
.feature-carousel .carousel-control-next:hover{
  background:var(--primary);
  opacity:1;
}
.feature-carousel .carousel-control-prev-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232E6BD6'%3e%3cpath d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/%3e%3c/svg%3e");
}
.feature-carousel .carousel-control-next-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232E6BD6'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.feature-carousel .carousel-control-prev:hover .carousel-control-prev-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/%3e%3c/svg%3e");
}
.feature-carousel .carousel-control-next:hover .carousel-control-next-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
@media(max-width:575px){
  .feature-shot{height:240px}
  .feature-carousel .carousel-control-prev{left:0}
  .feature-carousel .carousel-control-next{right:0}
}

/* system requirements */
.sys-section{
  background:var(--bg-page);
}
.sys-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:32px;
  height:100%;
  box-shadow:var(--shadow-card);
}
.sys-card h3{
  font-size:20px;font-weight:600;margin-bottom:20px;
  display:flex;align-items:center;gap:10px;
}
.sys-list{
  list-style:none;padding:0;margin:0;
}
.sys-list li{
  display:flex;justify-content:space-between;align-items:center;
  padding:12px 0;
  border-bottom:1px solid var(--border);
  font-size:15px;
  color:var(--text-secondary);
}
.sys-list li:last-child{border-bottom:none}
.sys-list .system-name{font-weight:500;color:var(--text-main)}
.sys-list .version{
  font-family:var(--font-num);
  color:var(--text-muted);font-size:14px;
}
.compat-card{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  border-radius:var(--radius-card);
  padding:36px 32px;
  color:#fff;
  height:100%;
  box-shadow:0 16px 40px rgba(46,107,214,0.25);
}
.compat-card h3{
  font-size:20px;font-weight:600;color:#fff;
  margin-bottom:8px;
}
.compat-card .compat-sub{
  font-size:14px;opacity:0.85;margin-bottom:24px;
}
.device-icons{
  display:flex;gap:16px;margin-bottom:28px;
}
.device-icons .device{
  width:52px;height:52px;border-radius:14px;
  background:rgba(255,255,255,0.15);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
}
.compat-list{
  list-style:none;padding:0;margin:0;
}
.compat-list li{
  display:flex;justify-content:space-between;
  padding:10px 0;
  font-size:14px;
  border-bottom:1px solid rgba(255,255,255,0.15);
}
.compat-list li:last-child{border-bottom:none}
.compat-list .label{opacity:0.85}
.compat-list .val{font-weight:600}
@media(max-width:575px){
  .sys-card{padding:24px}
  .compat-card{padding:28px 24px}
}

/* testimonials */
.review-section{
  background:#fff;
}
.review-summary{
  text-align:center;margin-bottom:48px;
}
.big-score{
  font-family:var(--font-num);
  font-size:56px;font-weight:700;color:var(--accent);
  line-height:1;
}
.star-row{
  display:inline-flex;gap:4px;margin:10px 0;
}
.star-row svg{
  width:18px;height:18px;fill:var(--star);
}
.review-total{
  font-size:14px;color:var(--text-muted);
}
.review-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:28px;
  height:100%;
  position:relative;
  border-left:4px solid var(--primary);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease;
}
.review-card:nth-child(2){border-left-color:var(--accent)}
.review-card:nth-child(3){border-left-color:var(--primary)}
.review-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
}
.review-head{
  display:flex;align-items:center;gap:12px;margin-bottom:14px;
}
.review-avatar{
  width:44px;height:44px;border-radius:50%;
  background:var(--primary-bg);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;color:var(--primary);
}
.review-head .name{font-size:15px;font-weight:600}
.review-head .device{font-size:12px;color:var(--text-muted)}
.review-text{
  font-size:14px;color:var(--text-secondary);
  line-height:1.8;
  font-style:normal;
}
.review-meta{
  display:flex;justify-content:space-between;
  margin-top:16px;padding-top:14px;
  border-top:1px solid var(--border);
  font-size:12px;color:var(--text-muted);
}
@media(max-width:991px){
  .review-card{margin-bottom:24px}
}

/* news list */
.news-section{
  background:var(--bg-page);
}
.featured-card{
  display:block;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease;
  height:100%;
}
.featured-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.featured-cover{
  aspect-ratio:16/9;
  width:100%;
  overflow:hidden;
}
.featured-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.featured-card:hover .featured-cover img{transform:scale(1.03)}
.featured-body{
  padding:20px 24px 24px;
}
.featured-body h3{
  font-size:20px;font-weight:600;color:var(--text-main);
  margin:10px 0 8px;
  line-height:1.4;
  transition:color .2s ease;
}
.featured-card:hover .featured-body h3{color:var(--primary)}
.featured-body p{
  font-size:14px;color:var(--text-secondary);
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;gap:12px;
  font-size:13px;color:var(--text-muted);
}
.badge-cat{
  display:inline-block;
  background:var(--primary-bg);
  color:var(--primary);
  font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:var(--radius-btn);
}
.news-list-wrap{
  display:flex;flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:8px 24px;
  box-shadow:var(--shadow-card);
  height:100%;
}
.news-list-item{
  display:flex;
  align-items:center;
  gap:16px;
  padding:16px 0;
  border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.news-list-item:last-child{border-bottom:none}
.news-list-item .news-list-body{
  flex:1;min-width:0;
}
.news-list-item h4{
  font-size:15px;font-weight:600;
  color:var(--text-main);
  margin-bottom:4px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  transition:color .2s ease;
}
.news-list-item:hover h4{color:var(--primary)}
.news-list-item p{
  font-size:13px;color:var(--text-secondary);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:6px;
}
.news-list-item .news-meta{font-size:12px}
.empty-state{
  padding:48px 24px;
  text-align:center;
  color:var(--text-muted);
  font-size:15px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  width:100%;
}
.view-all-link{
  font-size:14px;font-weight:600;
  color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
}
.view-all-link:hover{color:var(--primary-light)}
@media(max-width:575px){
  .news-list-item p{display:none}
}

/* faq */
.faq-section{
  background:#fff;
}
.accordion-item{
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .3s ease;
}
.accordion-item.has-open{
  border-color:rgba(46,107,214,0.3);
}
.accordion-button{
  background:transparent;
  font-size:16px;font-weight:600;
  color:var(--text-main);
  padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  box-shadow:none !important;
}
.accordion-button::after{display:none}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:transparent;
}
.faq-icon{
  width:28px;height:28px;border-radius:50%;
  background:var(--primary-bg);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:transform .3s ease;
}
.faq-icon svg{
  width:16px;height:16px;
  stroke:var(--primary);
  stroke-width:2;fill:none;
  stroke-linecap:round;
}
.accordion-button:not(.collapsed) .faq-icon{
  transform:rotate(45deg);
  background:var(--primary);
}
.accordion-button:not(.collapsed) .faq-icon svg{stroke:#fff}
.accordion-body{
  padding:0 24px 24px;
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.8;
}
@media(max-width:575px){
  .accordion-button{font-size:15px;padding:16px 18px}
  .accordion-body{padding:0 18px 18px}
}

/* cta */
.cta-section{
  position:relative;
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);
  overflow:hidden;
  padding:80px 0;
}
.cta-section::before{
  content:"";position:absolute;
  top:-60px;right:-60px;width:240px;height:240px;
  border-radius:50%;
  background:rgba(255,255,255,0.06);
}
.cta-section::after{
  content:"";position:absolute;
  bottom:-80px;left:-40px;width:200px;height:200px;
  border-radius:50%;
  background:rgba(255,255,255,0.05);
}
.cta-title{
  font-size:32px;font-weight:700;color:#fff;
  margin-bottom:12px;
}
.cta-sub{
  font-size:16px;color:rgba(255,255,255,0.85);
  margin-bottom:32px;
}
.cta-buttons{
  display:flex;gap:16px;flex-wrap:wrap;
}
.btn-white-download{
  background:#fff;color:var(--accent);
  border:none;padding:14px 30px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .25s ease;
  box-shadow:0 4px 16px rgba(0,0,0,0.15);
}
.btn-white-download:hover{
  transform:translateY(-3px);
  color:var(--accent-dark);
  box-shadow:0 10px 28px rgba(0,0,0,0.2);
}
.cta-version{
  font-size:13px;color:rgba(255,255,255,0.7);
  margin-top:20px;
}
.cta-qr{
  display:flex;justify-content:center;align-items:center;
}
.cta-qr-box{
  width:180px;height:180px;
  background:#fff;border-radius:16px;
  padding:12px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(0,0,0,0.2);
}
.cta-qr-box img{max-width:140px;height:auto}
@media(max-width:991px){
  .cta-qr{margin-top:32px}
}
@media(max-width:575px){
  .cta-title{font-size:24px}
  .btn-white-download{width:100%;justify-content:center}
}

/* footer */
.site-footer{
  background:#12181F;
  color:rgba(255,255,255,0.7);
  padding:60px 0 30px;
}
.footer-brand{
  font-size:18px;font-weight:700;color:#fff;
  margin-bottom:12px;
  display:flex;align-items:center;gap:10px;
}
.footer-brand .logo-mark{
  background:linear-gradient(135deg,#C8102E 50%,#2E6BD6 50%);
}
.footer-desc{
  font-size:14px;line-height:1.8;
  color:rgba(255,255,255,0.55);
  max-width:320px;
}
.footer-title{
  font-size:15px;font-weight:600;color:#fff;
  margin-bottom:16px;
}
.footer-links{
  list-style:none;padding:0;margin:0;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  color:rgba(255,255,255,0.6);
  font-size:14px;
  transition:color .2s ease;
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  margin-top:40px;padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,0.45);
  flex-wrap:wrap;gap:12px;
}
.footer-bottom a{
  color:rgba(255,255,255,0.6);
  margin-left:4px;
}
.footer-bottom a:hover{color:#fff}
@media(max-width:575px){
  .site-footer{padding-top:40px}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* stats strip */
.stats-strip{
  background:var(--primary-bg);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:24px 0;
}
.stats-row{
  display:flex;
  justify-content:space-around;
  flex-wrap:wrap;
  gap:24px;
}
.stat-item{
  text-align:center;
}
.stat-num{
  font-family:var(--font-num);
  font-size:36px;font-weight:700;
  color:var(--primary);
  line-height:1.2;
}
.stat-label{
  font-size:13px;color:var(--text-muted);
  margin-top:4px;
}
@media(max-width:575px){
  .stat-num{font-size:28px}
}

/* roulang page: article */
:root {
  --bg-page: #F7F9FC;
  --bg-card: #FFFFFF;
  --bg-soft: #F0F4FB;
  --brand-blue: #2E6BD6;
  --brand-light: #5B8DEF;
  --accent-red: #C8102E;
  --accent-dark: #A00D24;
  --text-main: #1F2933;
  --text-secondary: #5F6B7A;
  --text-muted: #8A94A6;
  --border-color: rgba(23, 27, 32, 0.08);
  --radius-card: 16px;
  --radius-btn: 999px;
  --shadow-card: 0 4px 20px rgba(24, 39, 75, 0.06);
  --shadow-hover: 0 12px 32px rgba(24, 39, 75, 0.12);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
}
img { max-width: 100%; height: auto; }
a { color: var(--brand-blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-red); }
.container { max-width: 1200px; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  height: 72px;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,0.4);
  transition: background .3s, box-shadow .3s;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: 0 4px 24px rgba(0,0,0,0.05);
}
.site-header .container {
  height: 72px;
}
.navbar {
  height: 72px;
  padding: 0;
  flex-wrap: nowrap;
  align-items: center;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  padding: 0;
}
.navbar-brand:hover { color: var(--text-main); }
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  border-radius: 10px;
  letter-spacing: 0;
}
.navbar-nav {
  gap: 28px;
}
.navbar-nav .nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  padding: 8px 2px;
  border-radius: 0;
  background: transparent;
}
.navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--brand-blue);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width .25s;
}
.navbar-nav .nav-link:hover {
  color: var(--brand-blue);
  background: transparent;
}
.navbar-nav .nav-link:hover::after {
  width: 20px;
}
.navbar-nav .nav-link.active {
  color: var(--brand-blue);
}
.navbar-nav .nav-link.active::after {
  width: 20px;
}
.btn-download-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-red);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 22px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--accent-red);
  transition: background .2s, transform .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn-download-sm:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(200,16,46,0.2);
}
.navbar-toggler {
  border: none;
  background: transparent;
  padding: 8px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  cursor: pointer;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(46,107,214,0.25);
}
.toggler-icon {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand-blue);
  border-radius: 2px;
  margin: 5px auto;
  transition: transform .2s;
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 150px 0 56px;
  background-image: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(247,249,252,0.96)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color);
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb-nav a {
  color: var(--brand-blue);
  font-weight: 500;
}
.breadcrumb-nav .sep {
  color: var(--text-muted);
}
.breadcrumb-nav .current {
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 240px;
}
.article-h1 {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-main);
  max-width: 820px;
  margin: 0 0 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--text-muted);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i {
  font-size: 14px;
  color: var(--brand-light);
}
.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-soft);
  color: var(--brand-blue);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: var(--radius-btn);
}

/* ===== Article Section ===== */
.article-section {
  padding: 60px 0 48px;
}
.article-body {
  max-width: 760px;
  margin: 0 auto;
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
}
.article-content p {
  margin: 0 0 20px;
}
.article-content h2,
.article-content h3 {
  font-weight: 700;
  color: var(--text-main);
  margin: 32px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--brand-blue);
  line-height: 1.4;
}
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content img {
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  margin: 24px 0;
}
.article-content blockquote {
  background: var(--bg-soft);
  border-left: 4px solid var(--brand-blue);
  border-radius: 0 12px 12px 0;
  padding: 18px 22px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 15px;
}
.article-content ul,
.article-content ol {
  padding-left: 24px;
  margin: 0 0 20px;
}
.article-content ul li,
.article-content ol li {
  margin-bottom: 8px;
}
.article-content a {
  color: var(--brand-blue);
  border-bottom: 1px solid rgba(46,107,214,0.3);
}
.article-content a:hover {
  color: var(--accent-red);
  border-bottom-color: rgba(200,16,46,0.3);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
}
.article-content table th {
  background: var(--bg-soft);
  font-weight: 600;
}

/* ===== Tags & Share ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}
.tag-item {
  display: inline-flex;
  align-items: center;
  background: var(--bg-soft);
  color: var(--brand-blue);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(46,107,214,0.12);
}
.tag-item:hover {
  background: rgba(46,107,214,0.08);
  color: var(--brand-blue);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.article-share .share-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-right: 4px;
}
.share-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  transition: background .2s, color .2s, transform .2s;
  cursor: pointer;
  text-decoration: none;
}
.share-circle:hover {
  background: var(--brand-blue);
  color: #fff;
  transform: translateY(-3px);
}

/* ===== Not Found ===== */
.not-found-box {
  text-align: center;
  padding: 80px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.not-found-box .nf-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.not-found-box .nf-desc {
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-red);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 30px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--accent-red);
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-primary-custom:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(200,16,46,0.22);
}
.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--brand-blue);
  font-size: 15px;
  font-weight: 600;
  padding: 11px 28px;
  border-radius: var(--radius-btn);
  border: 2px solid var(--brand-blue);
  transition: background .2s, transform .2s;
}
.btn-outline-custom:hover {
  background: rgba(46,107,214,0.06);
  color: var(--brand-blue);
  transform: translateY(-2px);
}

/* ===== Related Section ===== */
.related-section {
  padding: 56px 0 72px;
  background: var(--bg-card);
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-heading h2 {
  font-size: 30px;
  font-weight: 700;
  margin: 0;
  position: relative;
  padding-left: 16px;
}
.section-heading h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--accent-red);
  border-radius: 4px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s;
  height: 100%;
  display: block;
  color: inherit;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  color: inherit;
}
.related-card .rel-img-wrap {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-soft);
}
.related-card .rel-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.related-card:hover .rel-img-wrap img {
  transform: scale(1.03);
}
.related-card .rel-body {
  padding: 20px;
}
.related-card .rel-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-main);
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .rel-title {
  color: var(--brand-blue);
}
.related-card .rel-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .rel-time {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== CTA Banner ===== */
.cta-section {
  padding: 56px 0;
}
.cta-banner {
  background: linear-gradient(120deg, var(--accent-red), #8A0C20);
  border-radius: 24px;
  padding: 56px 48px;
  color: #fff;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-banner::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.cta-banner::after {
  content: "";
  position: absolute;
  left: -30px;
  bottom: -50px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-banner h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
}
.cta-banner p {
  font-size: 15px;
  opacity: 0.9;
  margin: 0 0 28px;
  position: relative;
  z-index: 1;
}
.cta-btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  position: relative;
  z-index: 1;
}
.cta-btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: var(--accent-red);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid #fff;
  transition: transform .2s, box-shadow .2s;
}
.cta-btn-white:hover {
  color: var(--accent-red);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}
.cta-version {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

/* ===== Back List ===== */
.back-list {
  text-align: center;
  margin-top: 44px;
}

/* ===== Footer ===== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding-top: 64px;
  padding-bottom: 28px;
  margin-top: 0;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 340px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 12px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s;
}
.footer-links a:hover {
  color: var(--brand-blue);
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  margin-top: 48px;
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a {
  color: var(--text-muted);
}
.footer-bottom a:hover {
  color: var(--brand-blue);
}

/* ===== Focus States ===== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(46,107,214,0.4);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ===== Mobile Drawer ===== */
@media (max-width: 991.98px) {
  .site-header {
    height: 64px;
  }
  .site-header .container {
    height: 64px;
  }
  .navbar {
    height: 64px;
  }
  .navbar-collapse {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px 24px 28px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-color);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .navbar-nav {
    gap: 4px;
    margin-bottom: 16px;
  }
  .navbar-nav .nav-link {
    font-size: 15px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(23,27,32,0.04);
  }
  .btn-download-sm {
    width: 100%;
    margin-top: 8px;
  }
  .article-hero {
    padding: 120px 0 40px;
  }
  .article-h1 {
    font-size: 32px;
  }
  .cta-banner {
    padding: 40px 24px;
  }
  .cta-banner h2 {
    font-size: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 575.98px) {
  .article-section {
    padding: 40px 0 32px;
  }
  .article-h1 {
    font-size: 26px;
  }
  .article-meta {
    gap: 12px;
    font-size: 12px;
  }
  .article-body {
    max-width: 100%;
  }
  .section-heading h2 {
    font-size: 24px;
  }
  .related-card .rel-body {
    padding: 16px;
  }
  .cta-btn-group {
    flex-direction: column;
  }
  .cta-btn-white {
    width: 100%;
  }
  .breadcrumb-nav .current {
    max-width: 160px;
  }
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #2E6BD6;
            --primary-light: #5B8DEF;
            --primary-bg: #F0F4FB;
            --accent-red: #C8102E;
            --accent-red-dark: #A00D24;
            --text-main: #1F2933;
            --text-secondary: #5F6B7A;
            --text-muted: #8A94A6;
            --bg-body: #F7F9FC;
            --bg-card: #FFFFFF;
            --border: rgba(23, 27, 32, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(24, 39, 75, 0.06);
            --shadow-hover: 0 12px 32px rgba(24, 39, 75, 0.12);
            --transition: 0.3s ease;
        }

        /* ========== 基础 reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color 0.2s var(--transition);
        }

        a:hover {
            color: var(--accent-red);
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(20px) saturate(160%);
            -webkit-backdrop-filter: blur(20px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }

        .site-header .navbar {
            min-height: 72px;
            padding-top: 8px;
            padding-bottom: 8px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            color: var(--text-main);
            font-size: 17px;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--text-main);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #C8102E 0%, #1F2933 70%);
            color: #fff;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            position: relative;
            padding: 8px 16px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.2s;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            opacity: 0;
            transform: scaleX(0.4);
            transition: opacity 0.2s, transform 0.2s;
        }

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

        .btn-download-sm {
            display: inline-block;
            padding: 8px 22px;
            border-radius: 999px;
            background: var(--accent-red);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            transition: background 0.3s, transform 0.2s, box-shadow 0.3s;
            box-shadow: 0 4px 12px rgba(200, 16, 46, 0.25);
        }

        .btn-download-sm:hover {
            background: var(--accent-red-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 16, 46, 0.3);
        }

        .navbar-toggler {
            border: none;
            background: transparent;
            padding: 6px 10px;
        }

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

        .toggler-icon {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            margin: 5px 0;
            border-radius: 2px;
            transition: transform 0.3s;
        }

        @media (max-width: 991px) {
            .site-header .navbar {
                min-height: 64px;
            }

            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: 0 12px 32px rgba(24, 39, 75, 0.1);
            }

            .navbar-nav .nav-link {
                padding: 12px 8px;
                border-bottom: 1px solid var(--border);
            }

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

            .btn-download-sm {
                margin-top: 12px;
                text-align: center;
                display: block;
            }
        }

        /* ========== 分类页 Hero ========== */
        .page-hero {
            position: relative;
            padding: 120px 0 56px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: #F0F4FB;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(240, 244, 251, 0.88) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .page-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 0;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(46, 107, 214, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(46, 107, 214, 0.15);
        }

        @media (max-width: 767px) {
            .page-hero {
                padding: 100px 0 40px;
            }

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

            .page-hero p {
                font-size: 16px;
            }
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 36px;
        }

        @media (max-width: 767px) {
            .section-block {
                padding: 48px 0;
            }

            .section-title {
                font-size: 24px;
            }
        }

        /* ========== 数据指标深色区 ========== */
        .stats-section {
            padding: 64px 0 80px;
            background: linear-gradient(135deg, #1F2933 0%, #17212B 100%);
            color: #fff;
            border-radius: 0;
        }

        .stats-section .section-title {
            color: #fff;
        }

        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: transform 0.3s, background 0.3s;
            height: 100%;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.1);
        }

        .stat-number {
            display: block;
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-family: "DIN Alternate", "Inter", "Arial Narrow", sans-serif;
        }

        .stat-number em {
            font-style: normal;
            color: var(--primary-light);
        }

        .stat-label {
            display: block;
            margin-top: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .stats-desc {
            margin-top: 40px;
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        @media (max-width: 767px) {
            .stats-section {
                padding: 48px 0;
            }

            .stat-number {
                font-size: 38px;
            }

            .stats-desc {
                font-size: 15px;
            }
        }

        /* ========== 服务特点 ========== */
        .features-section {
            background: #fff;
            padding: 80px 0;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            height: 100%;
            position: relative;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 107, 214, 0.25);
            transform: translateY(-4px);
        }

        .feature-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-bg);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .feature-card .icon-wrap svg {
            width: 24px;
            height: 24px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-card::after {
            content: '↗';
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 18px;
            color: var(--primary);
            opacity: 0;
            transform: translate(-6px, 6px);
            transition: opacity 0.3s, transform 0.3s;
        }

        .feature-card:hover::after {
            opacity: 1;
            transform: translate(0, 0);
        }

        @media (max-width: 767px) {
            .features-section {
                padding: 48px 0;
            }

            .feature-card {
                padding: 24px 20px;
            }
        }

        /* ========== 适用场景 ========== */
        .scenarios-section {
            background: var(--primary-bg);
            padding: 80px 0;
        }

        .scenario-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            height: 100%;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s, transform 0.3s;
            position: relative;
        }

        .scenario-card:nth-child(2) {
            border-left-color: var(--accent-red);
        }

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

        .scenario-card .scenario-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-bg);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .scenario-card:nth-child(2) .scenario-icon {
            background: rgba(200, 16, 46, 0.08);
        }

        .scenario-card .scenario-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .scenario-card:nth-child(2) .scenario-icon svg {
            stroke: var(--accent-red);
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 767px) {
            .scenarios-section {
                padding: 48px 0;
            }
        }

        /* ========== 获取流程 ========== */
        .process-section {
            background: #fff;
            padding: 80px 0;
        }

        .process-step {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 40px;
            right: -14px;
            width: 28px;
            height: 2px;
            background: var(--border);
        }

        .process-step:last-child::after {
            display: none;
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
            border: 2px solid rgba(46, 107, 214, 0.15);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 220px;
            margin: 0 auto;
        }

        @media (max-width: 767px) {
            .process-section {
                padding: 48px 0;
            }

            .process-step::after {
                display: none;
            }
        }

        /* ========== 内容卡片区 + 侧栏 ========== */
        .content-section {
            background: var(--bg-body);
            padding: 80px 0;
        }

        .content-intro {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s, transform 0.3s;
            height: 100%;
            border: 1px solid var(--border);
        }

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

        .article-card .cover-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

        .article-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .cover-wrap img {
            transform: scale(1.03);
        }

        .article-card .card-body {
            padding: 20px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .article-card .card-meta .badge-cat {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        .article-card h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .article-card h3 a {
            color: var(--text-main);
            transition: color 0.2s;
        }

        .article-card h3 a:hover {
            color: var(--primary);
        }

        .article-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .article-card .read-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }

        /* 侧栏 */
        .sidebar {
            position: sticky;
            top: 96px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            margin-bottom: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s;
        }

        .sidebar-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .sidebar-card .side-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px;
            border-radius: 12px;
            transition: background 0.2s;
        }

        .sidebar-card .side-link:hover {
            background: var(--primary-bg);
        }

        .sidebar-card .side-link img {
            width: 64px;
            height: 48px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }

        .sidebar-card .side-link .side-name {
            font-weight: 600;
            font-size: 15px;
            color: var(--text-main);
            display: block;
        }

        .sidebar-card .side-link .side-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            display: block;
        }

        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        /* FAQ 手风琴 */
        .sidebar-faq .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .sidebar-faq .accordion-button {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 14px 16px;
            background: #fff;
            box-shadow: none;
            border-radius: 12px;
        }

        .sidebar-faq .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-bg);
        }

        .sidebar-faq .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(46, 107, 214, 0.3);
        }

        .sidebar-faq .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: transform 0.3s;
            transform: rotate(0deg);
        }

        .sidebar-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }

        .sidebar-faq .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding: 4px 16px 16px;
        }

        @media (max-width: 991px) {
            .sidebar {
                margin-top: 40px;
                position: static;
            }
        }

        @media (max-width: 767px) {
            .content-section {
                padding: 48px 0;
            }

            .article-card .cover-wrap {
                aspect-ratio: 16 / 10;
            }
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            background: linear-gradient(135deg, #C8102E 0%, #8A0C20 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .cta-btn {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 999px;
            background: #fff;
            color: var(--accent-red);
            font-weight: 600;
            font-size: 15px;
            transition: transform 0.2s, box-shadow 0.3s;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            color: var(--accent-red-dark);
        }

        .cta-version {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 767px) {
            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .cta-btn {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

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

        @media (max-width: 767px) {
            .site-footer {
                padding-top: 40px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 焦点可见性 ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(46, 107, 214, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
      --primary: #2E6BD6;
      --primary-light: #5B8DEF;
      --primary-bg: #F0F4FB;
      --accent-red: #C8102E;
      --accent-red-dark: #A00D24;
      --text-main: #1F2933;
      --text-sub: #5F6B7A;
      --text-muted: #8A94A6;
      --bg-page: #F7F9FC;
      --bg-card: #FFFFFF;
      --border: rgba(23, 27, 32, 0.08);
      --star: #F5A623;
      --radius-card: 16px;
      --radius-btn: 999px;
      --shadow-card: 0 4px 20px rgba(24, 39, 75, 0.06);
      --shadow-hover: 0 12px 32px rgba(24, 39, 75, 0.12);
      --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
      --font-num: "Inter", "DIN Alternate", "Arial Narrow", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-main);
      background: var(--bg-page);
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.25s ease;
    }

    a:hover {
      color: var(--accent-red);
    }

    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;
      line-height: 1.3;
      color: var(--text-main);
      margin: 0 0 12px 0;
    }

    p {
      margin: 0 0 16px 0;
    }

    .container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      height: 72px;
      background: rgba(255, 255, 255, 0.72);
      backdrop-filter: blur(20px) saturate(160%);
      -webkit-backdrop-filter: blur(20px) saturate(160%);
      border-bottom: 1px solid rgba(255, 255, 255, 0.4);
      transition: background 0.4s ease, box-shadow 0.4s ease;
    }

    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.98);
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
      border-bottom-color: var(--border);
    }

    .site-header .navbar {
      padding: 0;
      min-height: 72px;
      flex-wrap: nowrap;
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main) !important;
      white-space: nowrap;
      padding: 0;
      margin: 0;
    }

    .navbar-brand:hover {
      color: var(--primary) !important;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, #C8102E 50%, #1a1a2e 50%);
      color: #fff;
      font-size: 14px;
      font-weight: 800;
      letter-spacing: 0.5px;
      padding: 0 8px;
    }

    .navbar-nav {
      gap: 4px;
      align-items: center;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main) !important;
      padding: 8px 14px !important;
      border-radius: 8px;
      transition: color 0.25s ease, background 0.25s ease;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      bottom: 2px;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transition: width 0.3s ease;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      width: 18px;
    }

    .nav-link:hover {
      color: var(--primary) !important;
      background: rgba(46, 107, 214, 0.05);
    }

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

    .btn-download-sm {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--accent-red);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 8px 22px;
      border-radius: var(--radius-btn);
      border: none;
      transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
      box-shadow: 0 4px 14px rgba(200, 16, 46, 0.25);
      text-decoration: none;
      white-space: nowrap;
    }

    .btn-download-sm:hover {
      background: var(--accent-red-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(200, 16, 46, 0.35);
    }

    .btn-download-sm:active {
      transform: translateY(1px);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    .btn-download-sm:focus-visible {
      outline: 3px solid rgba(46, 107, 214, 0.5);
      outline-offset: 2px;
    }

    .navbar-toggler {
      border: none;
      padding: 8px;
      background: transparent;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

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

    .toggler-icon {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transition: transform 0.3s, opacity 0.3s;
    }

    .navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }
    .navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(2) {
      opacity: 0;
    }
    .navbar-toggler[aria-expanded="true"] .toggler-icon:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }

    /* ===== Page Hero ===== */
    .page-hero {
      position: relative;
      padding: 160px 0 80px;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(240, 244, 251, 0.9) 60%, rgba(247, 249, 252, 0.92) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-bottom: 1px solid var(--border);
      overflow: hidden;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      bottom: -60px;
      right: -40px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(46, 107, 214, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .page-hero .container {
      position: relative;
      z-index: 2;
    }

    .page-hero h1 {
      font-size: 48px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.2;
    }

    .page-hero .hero-subtitle {
      font-size: 18px;
      color: var(--text-sub);
      max-width: 560px;
      line-height: 1.7;
      margin-bottom: 28px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(200, 16, 46, 0.08);
      color: var(--accent-red);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 18px;
      border-radius: var(--radius-btn);
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }

    .hero-badge i {
      font-size: 12px;
    }

    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-red);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      border: none;
      transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
      box-shadow: 0 4px 16px rgba(200, 16, 46, 0.25);
      text-decoration: none;
    }

    .btn-primary-custom:hover {
      background: var(--accent-red-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(200, 16, 46, 0.32);
    }

    .btn-primary-custom:active {
      transform: translateY(1px);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    }

    .btn-primary-custom:focus-visible {
      outline: 3px solid rgba(46, 107, 214, 0.5);
      outline-offset: 2px;
    }

    .btn-outline-custom {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--primary);
      font-size: 15px;
      font-weight: 600;
      padding: 11px 28px;
      border-radius: var(--radius-btn);
      border: 2px solid var(--primary);
      transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
      text-decoration: none;
    }

    .btn-outline-custom:hover {
      background: rgba(46, 107, 214, 0.05);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .btn-outline-custom:active {
      transform: translateY(1px);
    }

    .btn-outline-custom:focus-visible {
      outline: 3px solid rgba(46, 107, 214, 0.4);
      outline-offset: 2px;
    }

    /* ===== Section General ===== */
    .site-section {
      padding: 80px 0;
    }

    .site-section.alt-bg {
      background: var(--primary-bg);
    }

    .section-heading {
      margin-bottom: 40px;
    }

    .section-heading .section-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(46, 107, 214, 0.08);
      padding: 4px 14px;
      border-radius: var(--radius-btn);
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-heading h2 {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .section-heading .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 680px;
      line-height: 1.7;
    }

    /* ===== Overview ===== */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .overview-text .lead-text {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-sub);
      margin-bottom: 16px;
    }

    .overview-text .strong-text {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.75;
    }

    .data-card-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .data-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 24px 20px;
      text-align: center;
      border: 1px solid transparent;
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

    .data-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: rgba(46, 107, 214, 0.25);
    }

    .data-card .data-num {
      font-family: var(--font-num);
      font-size: 42px;
      font-weight: 800;
      line-height: 1.1;
      color: var(--accent-red);
      margin-bottom: 4px;
    }

    .data-card .data-label {
      font-size: 14px;
      color: var(--text-sub);
      font-weight: 500;
    }

    .data-card .data-trend {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      margin-top: 8px;
    }

    .data-card .data-trend i {
      font-size: 12px;
    }

    /* ===== News Cards ===== */
    .section-news {
      background: var(--bg-page);
    }

    .news-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      height: 100%;
      display: flex;
      flex-direction: column;
      border: 1px solid transparent;
      transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
    }

    .news-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-5px);
      border-color: rgba(46, 107, 214, 0.25);
    }

    .news-card .card-thumb {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 10;
      background: var(--primary-bg);
    }

    .news-card .card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .news-card:hover .card-thumb img {
      transform: scale(1.03);
    }

    .news-card .thumb-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(6px);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: var(--radius-btn);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }

    .news-card .card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .news-card .card-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .news-card .card-meta .cat-tag {
      background: var(--primary-bg);
      color: var(--primary);
      font-weight: 600;
      padding: 2px 10px;
      border-radius: var(--radius-btn);
      font-size: 12px;
    }

    .news-card .card-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-card .card-title a {
      color: var(--text-main);
      transition: color 0.25s ease;
    }

    .news-card .card-title a:hover {
      color: var(--primary);
    }

    .news-card .card-excerpt {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
    }

    .news-card .card-footer-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap 0.25s ease;
    }

    .news-card .card-footer-link:hover {
      gap: 10px;
      color: var(--accent-red);
    }

    /* ===== Feature Split ===== */
    .feature-split {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 48px;
      align-items: center;
    }

    .feature-media {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      aspect-ratio: 4 / 3;
    }

    .feature-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .feature-media .play-badge {
      position: absolute;
      bottom: 16px;
      left: 16px;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(4px);
      color: var(--accent-red);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: var(--radius-btn);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .feature-content .feature-list {
      margin-top: 8px;
    }

    .feature-content .feature-list li {
      display: flex;
      gap: 12px;
      padding: 10px 0;
      border-bottom: 1px solid var(--border);
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .feature-content .feature-list li:last-child {
      border-bottom: none;
    }

    .feature-content .feature-list li i {
      color: var(--primary);
      margin-top: 4px;
      font-size: 14px;
    }

    .feature-content .feature-list li strong {
      color: var(--text-main);
      font-weight: 600;
    }

    /* ===== Stats Dark ===== */
    .stats-dark {
      background: linear-gradient(135deg, #1a1a2e 0%, #0f1923 70%, #162240 100%);
      color: #fff;
      border-radius: 24px;
      padding: 60px 48px;
      position: relative;
      overflow: hidden;
      margin: 0 20px;
    }

    .stats-dark::before {
      content: "";
      position: absolute;
      top: -80px;
      right: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(200, 16, 46, 0.18);
      filter: blur(40px);
    }

    .stats-dark::after {
      content: "";
      position: absolute;
      bottom: -60px;
      left: 20%;
      width: 160px;
      height: 160px;
      border-radius: 50%;
      background: rgba(46, 107, 214, 0.15);
      filter: blur(30px);
    }

    .stats-dark .stats-heading {
      position: relative;
      z-index: 2;
      margin-bottom: 40px;
    }

    .stats-dark .stats-heading h2 {
      color: #fff;
      font-size: 32px;
      font-weight: 700;
    }

    .stats-dark .stats-heading p {
      color: rgba(255, 255, 255, 0.7);
      font-size: 15px;
      margin-bottom: 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
      position: relative;
      z-index: 2;
    }

    .stat-item {
      text-align: center;
      padding: 20px 12px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      transition: background 0.3s ease, transform 0.3s ease;
    }

    .stat-item:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateY(-4px);
    }

    .stat-item .stat-num {
      font-family: var(--font-num);
      font-size: 40px;
      font-weight: 800;
      color: #fff;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .stat-item .stat-num span {
      color: var(--primary-light);
    }

    .stat-item .stat-label {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.65);
    }

    /* ===== FAQ + Other ===== */
    .faq-other-wrap {
      display: grid;
      grid-template-columns: 7fr 5fr;
      gap: 48px;
      align-items: start;
    }

    .accordion-item {
      border: 1px solid var(--border);
      border-radius: 14px !important;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: rgba(46, 107, 214, 0.3);
    }

    .accordion-button {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      background: #fff;
      padding: 18px 24px;
      border: none;
      box-shadow: none;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .accordion-button::after {
      content: none;
    }

    .accordion-button .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-bg);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
      transition: transform 0.3s ease, background 0.3s ease;
    }

    .accordion-button:not(.collapsed) {
      background: #fff;
      color: var(--primary);
    }

    .accordion-button:not(.collapsed) .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .accordion-button:focus {
      box-shadow: none;
      outline: 3px solid rgba(46, 107, 214, 0.25);
    }

    .accordion-body {
      padding: 0 24px 20px 64px;
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.75;
      background: #fff;
    }

    .other-cats-wrap {
      display: grid;
      gap: 16px;
    }

    .other-cat-card {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      padding: 16px;
      box-shadow: var(--shadow-card);
      border: 1px solid transparent;
      transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
      text-decoration: none;
      color: var(--text-main);
    }

    .other-cat-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
      border-color: rgba(46, 107, 214, 0.25);
      color: var(--text-main);
    }

    .other-cat-card .cat-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-bg);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }

    .other-cat-card .cat-info {
      flex: 1;
    }

    .other-cat-card .cat-info .cat-name {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 2px;
    }

    .other-cat-card .cat-info .cat-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .other-cat-card .cat-arrow {
      color: var(--text-muted);
      font-size: 14px;
      transition: color 0.3s, transform 0.3s;
    }

    .other-cat-card:hover .cat-arrow {
      color: var(--primary);
      transform: translateX(4px);
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--accent-red) 0%, #8A0C20 100%);
      border-radius: 24px;
      padding: 60px 48px;
      position: relative;
      overflow: hidden;
      margin: 0 20px;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -50px;
      right: -30px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
    }

    .cta-section::after {
      content: "";
      position: absolute;
      bottom: -60px;
      left: 10%;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      flex-wrap: wrap;
    }

    .cta-text h2 {
      color: #fff;
      font-size: 30px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .cta-text p {
      color: rgba(255, 255, 255, 0.85);
      font-size: 16px;
      margin-bottom: 0;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .cta-actions .btn-white {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      color: var(--accent-red);
      font-size: 15px;
      font-weight: 600;
      padding: 12px 26px;
      border-radius: var(--radius-btn);
      border: none;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
      text-decoration: none;
    }

    .cta-actions .btn-white:hover {
      background: #f5f5f5;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
    }

    .cta-actions .btn-white:active {
      transform: translateY(1px);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .cta-actions .btn-white:focus-visible {
      outline: 3px solid rgba(255, 255, 255, 0.5);
      outline-offset: 2px;
    }

    .cta-actions .btn-ghost-white {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 10px 26px;
      border-radius: var(--radius-btn);
      border: 2px solid rgba(255, 255, 255, 0.6);
      transition: background 0.25s, border-color 0.25s, transform 0.25s;
      text-decoration: none;
    }

    .cta-actions .btn-ghost-white:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: #fff;
      transform: translateY(-2px);
    }

    .cta-actions .btn-ghost-white:active {
      transform: translateY(1px);
    }

    .cta-actions .btn-ghost-white:focus-visible {
      outline: 3px solid rgba(255, 255, 255, 0.4);
      outline-offset: 2px;
    }

    .cta-qr {
      text-align: center;
      background: rgba(255, 255, 255, 0.12);
      border-radius: 16px;
      padding: 16px;
      backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .cta-qr .qr-placeholder {
      width: 88px;
      height: 88px;
      border-radius: 8px;
      background: #fff;
      margin: 0 auto 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-size: 28px;
    }

    .cta-qr .qr-text {
      color: rgba(255, 255, 255, 0.85);
      font-size: 12px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #0e1a2b;
      color: rgba(255, 255, 255, 0.7);
      padding: 60px 0 0;
      margin-top: 80px;
    }

    .site-footer .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .site-footer .footer-brand .logo-mark {
      background: linear-gradient(135deg, #C8102E 50%, #1a1a2e 50%);
    }

    .site-footer .footer-desc {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255, 255, 255, 0.55);
      margin-bottom: 0;
    }

    .site-footer .footer-title {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .site-footer .footer-title::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--accent-red);
      border-radius: 2px;
    }

    .site-footer .footer-links {
      display: grid;
      gap: 8px;
    }

    .site-footer .footer-links a {
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
      transition: color 0.25s ease, padding-left 0.25s ease;
    }

    .site-footer .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .site-footer .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 40px;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    .site-footer .footer-bottom a {
      color: rgba(255, 255, 255, 0.55);
    }

    .site-footer .footer-bottom a:hover {
      color: #fff;
    }

    /* ===== Responsive ===== */
    @media (max-width: 991px) {
      .site-header .navbar-collapse {
        background: #fff;
        margin: 0 -20px;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
      }

      .site-header .navbar-collapse .navbar-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        margin-bottom: 12px;
      }

      .site-header .nav-link {
        padding: 10px 14px !important;
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      .site-header .nav-link::after {
        display: none;
      }

      .site-header .nav-link.active {
        background: var(--primary-bg);
        color: var(--primary);
        font-weight: 600;
      }

      .btn-download-sm {
        width: 100%;
        justify-content: center;
        margin-top: 4px;
      }

      .page-hero {
        padding: 130px 0 60px;
      }

      .page-hero h1 {
        font-size: 36px;
      }

      .overview-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .feature-split {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }

      .faq-other-wrap {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .site-section {
        padding: 60px 0;
      }

      .cta-section,
      .stats-dark {
        padding: 40px 24px;
        margin: 0 10px;
      }
    }

    @media (max-width: 767px) {
      .page-hero h1 {
        font-size: 30px;
      }

      .page-hero {
        padding: 110px 0 50px;
      }

      .hero-actions .btn-primary-custom,
      .hero-actions .btn-outline-custom {
        padding: 10px 20px;
        font-size: 14px;
      }

      .data-card-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }

      .data-card .data-num {
        font-size: 32px;
      }

      .news-card .card-body {
        padding: 18px;
      }

      .section-heading h2 {
        font-size: 26px;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }

      .stat-item .stat-num {
        font-size: 30px;
      }

      .section-heading .section-desc {
        font-size: 15px;
      }

      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 575px) {
      body {
        font-size: 14px;
      }

      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .site-header {
        height: 64px;
      }

      .site-header .navbar {
        min-height: 64px;
      }

      .navbar-brand {
        font-size: 16px;
      }

      .logo-mark {
        min-width: 32px;
        height: 32px;
        font-size: 12px;
      }

      .btn-download-sm {
        font-size: 13px;
        padding: 7px 16px;
      }

      .page-hero h1 {
        font-size: 26px;
      }

      .page-hero .hero-subtitle {
        font-size: 16px;
      }

      .hero-badge {
        font-size: 12px;
        padding: 5px 14px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .hero-actions .btn-primary-custom,
      .hero-actions .btn-outline-custom {
        justify-content: center;
      }

      .data-card-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
      }

      .data-card {
        padding: 18px 12px;
      }

      .data-card .data-num {
        font-size: 28px;
      }

      .data-card .data-label {
        font-size: 13px;
      }

      .stats-dark {
        padding: 32px 20px;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }

      .stat-item {
        padding: 16px 8px;
      }

      .stat-item .stat-num {
        font-size: 26px;
      }

      .stats-dark .stats-heading h2,
      .cta-text h2 {
        font-size: 24px;
      }

      .accordion-body {
        padding: 0 16px 16px 52px;
        font-size: 14px;
      }

      .accordion-button {
        padding: 16px;
        font-size: 15px;
        gap: 8px;
      }

      .other-cat-card .cat-info .cat-desc {
        font-size: 12px;
      }

      .section-heading h2 {
        font-size: 24px;
      }

      .site-section {
        padding: 48px 0;
      }

      .news-card .card-title {
        font-size: 17px;
      }

      .news-card .card-excerpt {
        font-size: 13px;
      }

      .cta-actions,
      .cta-actions .btn-white,
      .cta-actions .btn-ghost-white {
        width: 100%;
        justify-content: center;
      }

      .footer-brand {
        font-size: 16px !important;
      }
    }

/* roulang page: category3 */
:root {
            --primary: #2E6BD6;
            --primary-light: #5B8DEF;
            --primary-bg: #F0F4FB;
            --accent: #C8102E;
            --accent-dark: #A00D24;
            --text: #1F2933;
            --text-secondary: #5F6B7A;
            --text-muted: #8A94A6;
            --page-bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --border: rgba(23, 27, 32, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(24, 39, 75, 0.06);
            --shadow-hover: 0 12px 32px rgba(24, 39, 75, 0.12);
            --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--page-bg);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* === Header / 导航 === */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(20px) saturate(160%);
            -webkit-backdrop-filter: blur(20px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }

        .site-header .navbar {
            min-height: 72px;
            padding: 0;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 19px;
            color: var(--text);
            white-space: nowrap;
            padding: 0;
            margin-right: 24px;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent) 50%, #1F2933 50%);
            color: #fff;
            border-radius: 9px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            padding: 8px 16px;
            font-weight: 500;
            font-size: 15px;
            color: var(--text-secondary);
            position: relative;
            transition: color .2s ease;
            white-space: nowrap;
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width .3s ease;
        }

        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 20px;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary);
        }

        .btn-download-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: background .3s ease, transform .3s ease, box-shadow .3s ease;
            white-space: nowrap;
        }

        .btn-download-sm:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 16, 46, 0.3);
        }

        .navbar-toggler {
            border: none;
            padding: 6px;
            box-shadow: none !important;
            outline: none;
        }

        .toggler-icon {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            margin: 5px 0;
            border-radius: 2px;
            transition: background .2s;
        }

        /* === 小Hero === */
        .page-hero {
            position: relative;
            padding: 140px 0 60px;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, #F7F9FC 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            margin-top: 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--primary-bg);
            border: 1px solid rgba(46, 107, 214, 0.15);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 18px;
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .page-hero .hero-title {
            font-size: 46px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.2;
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        /* === 数据条 === */
        .stats-bar {
            background: #fff;
            padding: 28px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .stat-item {
            text-align: center;
            padding: 12px 8px;
            position: relative;
        }

        .stat-item+.stat-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 40px;
            background: var(--border);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            font-family: "Inter", "DIN Alternate", "Arial Narrow", sans-serif;
            line-height: 1.2;
        }

        .stat-number small {
            font-size: 18px;
            color: var(--text-muted);
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 4px;
        }

        /* === 主内容区 === */
        .category-content {
            padding: 64px 0;
        }

        .intro-block {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 32px;
        }

        .intro-block h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
            position: relative;
            padding-left: 14px;
        }

        .intro-block h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: var(--primary);
        }

        .intro-block p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text);
        }

        /* 关联卡片 */
        .category-card {
            display: flex;
            gap: 18px;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 16px;
            transition: box-shadow .3s ease, transform .3s ease, border-color .3s ease;
        }

        .category-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 107, 214, 0.25);
            transform: translateY(-4px);
        }

        .category-card .card-thumb {
            width: 168px;
            height: 105px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
            aspect-ratio: 16 / 10;
        }

        .category-card .card-body {
            padding: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .category-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
            line-height: 1.4;
            transition: color .2s;
        }

        .category-card:hover .card-body h3 {
            color: var(--primary);
        }

        .category-card .card-body p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 8px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            color: var(--text-muted);
            font-size: 12px;
            flex-wrap: wrap;
        }

        .card-meta .badge-soft {
            display: inline-flex;
            padding: 2px 10px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
        }

        /* === 侧栏 === */
        .side-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .side-link-card {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
            background: var(--primary-bg);
            margin-bottom: 10px;
            transition: all .3s ease;
            border: 1px solid transparent;
        }

        .side-link-card:hover {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .side-link-card strong {
            color: var(--primary);
            font-size: 15px;
            display: block;
            margin-bottom: 2px;
        }

        .side-link-card span {
            color: var(--text-secondary);
            font-size: 13px;
            line-height: 1.5;
            display: block;
        }

        /* FAQ 精简 */
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 18px 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(46, 107, 214, 0.25);
            box-shadow: var(--shadow-hover);
        }

        .faq-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .faq-item h4::before {
            content: 'Q';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 0 28px;
            line-height: 1.7;
        }

        /* === CTA === */
        .cta-section {
            background: linear-gradient(135deg, #C8102E 0%, #8A0C20 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 30px;
            position: relative;
        }

        .btn-cta-white {
            display: inline-block;
            background: #fff;
            color: var(--accent);
            border-radius: 999px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: all .3s ease;
            margin: 4px 6px;
        }

        .btn-cta-white:hover {
            background: #f5f5f5;
            color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
        }

        .btn-cta-ghost {
            display: inline-block;
            background: transparent;
            color: #fff;
            border-radius: 999px;
            padding: 11px 32px;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: all .3s ease;
            margin: 4px 6px;
        }

        .btn-cta-ghost:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .cta-note {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            margin-top: 18px;
        }

        /* === Footer === */
        .site-footer {
            background: #1F2933;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color .3s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color .3s;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* === 按钮焦点 === */
        .btn-cta-white:focus-visible,
        .btn-cta-ghost:focus-visible,
        .btn-download-sm:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid rgba(46, 107, 214, 0.5);
            outline-offset: 2px;
        }

        /* === 响应式 === */
        @media (max-width: 991.98px) {
            .navbar-nav {
                margin-top: 12px;
            }

            .site-header .navbar-collapse {
                background: #fff;
                border-radius: 0 0 16px 16px;
                padding: 16px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                margin-top: 6px;
            }

            .navbar-nav .nav-link {
                padding: 10px 12px;
            }

            .btn-download-sm {
                margin-top: 10px;
                width: 100%;
            }

            .page-hero {
                padding: 120px 0 44px;
            }

            .page-hero .hero-title {
                font-size: 36px;
            }

            .category-card {
                flex-direction: column;
            }

            .category-card .card-thumb {
                width: 100%;
                height: 180px;
            }

            .stat-item+.stat-item::before {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .site-header {
                height: 64px;
            }

            .site-header .navbar {
                min-height: 64px;
            }

            .navbar-brand {
                font-size: 15px;
            }

            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 10px;
            }

            .page-hero {
                padding: 100px 0 36px;
            }

            .page-hero .hero-title {
                font-size: 30px;
            }

            .page-hero .hero-subtitle {
                font-size: 15px;
            }

            .stats-bar {
                padding: 20px 0;
            }

            .stat-number {
                font-size: 28px;
            }

            .stat-item {
                padding: 8px 4px;
            }

            .category-content {
                padding: 40px 0;
            }

            .intro-block {
                padding: 22px;
            }

            .section-title {
                font-size: 20px;
            }

            .category-card .card-thumb {
                height: 150px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .btn-cta-white,
            .btn-cta-ghost {
                display: block;
                margin: 8px auto;
                max-width: 260px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-brand {
                font-size: 16px;
            }
        }