/* roulang page: index */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-accent:#F2701D;
  --c-title:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E4EAF2;
  --c-line:#EEF2F7;
  --c-safe:#DFF3EA;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(22,89,155,.06),0 12px 28px rgba(15,23,42,.05);
  --sh-card-hover:0 8px 24px rgba(22,89,155,.12);
  --bs-primary:#16599B;
  --bs-primary-rgb:22,89,155;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-color:#43536B;
  --bs-body-bg:#F5F8FC;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
  --bs-border-color:#E4EAF2;
  --bs-border-radius:14px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--c-title);font-weight:700;margin:0 0 .6em;line-height:1.35}
h1{font-size:clamp(28px,4.2vw,44px)}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:clamp(19px,2vw,22px)}
p{margin:0 0 1em}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-hover)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section-sm{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.section-head .eyebrow{display:inline-block;font-size:13px;letter-spacing:.12em;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 14px;margin-bottom:14px}
.section-head p{margin:6px 0 0;color:var(--c-muted);font-size:15px;max-width:640px}
.link-more{font-size:15px;font-weight:600;white-space:nowrap}
.link-more i{font-size:12px;margin-left:4px;transition:transform .2s ease}
.link-more:hover i{transform:translateX(3px)}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,23,42,.07)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary),#2A7DC4);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;box-shadow:0 4px 12px rgba(22,89,155,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;color:var(--c-title);letter-spacing:.01em}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.18em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;font-size:15px;color:var(--c-text);font-weight:500;
  border-radius:8px;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;
  background:var(--c-primary);border-radius:2px;transition:left .22s ease,right .22s ease;
}
.nav-menu a:hover{color:var(--c-primary)}
.nav-menu a:hover::after{left:14px;right:14px}
.nav-menu a.active{color:var(--c-primary);font-weight:700}
.nav-menu a.active::after{left:14px;right:14px}
.nav-cta{margin-left:8px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border:1px solid var(--c-border);border-radius:var(--r-pill);
  background:#fff;color:var(--c-primary);font-size:17px;
  align-items:center;justify-content:center;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1040;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:#fff;z-index:1050;transform:translateX(100%);
  transition:transform .28s ease;padding:22px 20px;overflow-y:auto;
  box-shadow:-12px 0 32px rgba(15,23,42,.14);
}
.drawer.open{transform:translateX(0)}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head b{font-size:16px;color:var(--c-title)}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-border);background:#fff;border-radius:var(--r-pill);color:var(--c-text)}
.drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 12px;border-radius:10px;color:var(--c-text);font-size:15px;
}
.drawer nav a:hover,.drawer nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.drawer .btn{width:100%;margin-top:20px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .2s ease;cursor:pointer;
}
.btn-primary{
  background:var(--c-primary);border-color:var(--c-primary);color:#fff;
  box-shadow:0 4px 14px rgba(22,89,155,.22);
}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,89,155,.28)}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0)}
.btn-outline{
  background:#fff;border-color:var(--c-primary);color:var(--c-primary);
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary-hover)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-accent:hover{background:#D95E12;border-color:#D95E12;color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:10px 6px;min-height:auto}
.btn-ghost:hover{text-decoration:underline}
.btn-light-outline{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-light-outline:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-block{width:100%}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#F5F8FC 0%,#E8F1FA 100%);
  padding:76px 0 72px;
}
.hero::before,.hero::after{
  content:"";position:absolute;border-radius:50%;border:1px solid rgba(22,89,155,.06);
}
.hero::before{width:620px;height:620px;top:-260px;right:-160px}
.hero::after{width:420px;height:420px;bottom:-220px;left:-140px}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-pill);padding:6px 16px;margin-bottom:20px;
  box-shadow:0 2px 8px rgba(22,89,155,.06);
}
.hero h1{margin-bottom:18px;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{font-size:17px;color:var(--c-text);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.stat-badge{
  background:#fff;border:1px solid var(--c-border);border-radius:12px;
  padding:12px 18px;min-width:132px;box-shadow:0 2px 10px rgba(22,89,155,.05);
}
.stat-badge b{display:block;font-size:22px;color:var(--c-primary);line-height:1.2}
.stat-badge span{font-size:13px;color:var(--c-muted)}
.login-card{
  background:#fff;border:1px solid var(--c-border);border-radius:18px;
  padding:28px 26px;box-shadow:var(--sh-card);
}
.login-card h2{font-size:20px;margin-bottom:6px}
.login-card .hint{font-size:13px;color:var(--c-muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-title);margin-bottom:8px}
.field input{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--c-border);
  border-radius:var(--r-input);background:#FBFDFF;color:var(--c-title);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#A9B4C4}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,89,155,.18);background:#fff}
.field-row{display:flex;gap:10px}
.field-row input{flex:1}
.code-btn{
  flex-shrink:0;height:44px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--c-primary);background:#fff;color:var(--c-primary);
  font-size:14px;font-weight:600;white-space:nowrap;
}
.code-btn:hover{background:var(--c-primary-soft)}
.login-links{display:flex;justify-content:space-between;gap:10px;margin-top:16px;font-size:13px}
.login-note{
  margin-top:18px;background:var(--c-safe);border-radius:10px;
  padding:10px 14px;font-size:13px;color:#256C55;display:flex;gap:8px;align-items:flex-start;
}
.login-note i{margin-top:3px}

/* service grid */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.svc-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover)}
.svc-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.svc-card:hover .svc-media img{transform:scale(1.04)}
.svc-icon{
  position:absolute;left:14px;bottom:14px;width:38px;height:38px;border-radius:11px;
  background:#fff;color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-size:16px;box-shadow:0 4px 12px rgba(15,23,42,.16);
}
.svc-body{padding:20px;display:flex;flex-direction:column;flex:1}
.svc-body h3{font-size:17px;margin-bottom:8px}
.svc-body p{font-size:14px;color:var(--c-muted);margin-bottom:14px}
.svc-link{margin-top:auto;font-size:14px;font-weight:600}

/* promise strip */
.promise-strip{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:28px 0}
.promise-item{
  display:flex;gap:14px;align-items:flex-start;border-radius:12px;padding:18px 18px;
  background:var(--c-primary-soft);
}
.promise-item:nth-child(even){background:var(--c-safe)}
.promise-item i{font-size:20px;color:var(--c-primary);margin-top:2px}
.promise-item:nth-child(even) i{color:#1E7B60}
.promise-item b{display:block;font-size:15px;color:var(--c-title);margin-bottom:2px}
.promise-item span{font-size:13px;color:var(--c-text)}

/* reviews */
.review-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;height:100%;box-shadow:var(--sh-card);
}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.review-top b{display:block;font-size:15px;color:var(--c-title)}
.tag-pill{
  display:inline-block;font-size:12px;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-line);color:var(--c-muted);margin-top:3px;
}
.review-card p{font-size:15px;color:var(--c-text);margin-bottom:14px}
.stars{color:var(--c-accent);font-size:13px;letter-spacing:2px}
.carousel-control-prev,.carousel-control-next{width:44px;opacity:1}
.carousel-control-prev-icon,.carousel-control-next-icon{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--c-border);
  background-image:none;position:relative;box-shadow:0 2px 10px rgba(15,23,42,.08);
}
.carousel-control-prev-icon::after,.carousel-control-next-icon::after{
  font-family:"Font Awesome 6 Free";font-weight:900;color:var(--c-primary);
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:14px;
}
.carousel-control-prev-icon::after{content:"\f104"}
.carousel-control-next-icon::after{content:"\f105"}
#reviewCarousel .carousel-indicators{position:static;margin:26px 0 0}
#reviewCarousel .carousel-indicators [data-bs-target]{
  width:8px;height:8px;border-radius:50%;background:#C9D6E6;border:0;opacity:1;margin:0 5px;
}
#reviewCarousel .carousel-indicators .active{background:var(--c-primary);width:22px;border-radius:var(--r-pill)}

/* news / cms */
.news-feature{
  display:grid;grid-template-columns:4fr 8fr;gap:0;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);transition:transform .25s ease,box-shadow .25s ease;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover)}
.news-feature .media{aspect-ratio:4/3;overflow:hidden;background:var(--c-primary-soft)}
.news-feature .media img{width:100%;height:100%;object-fit:cover}
.news-feature .body{padding:28px}
.news-feature h3{font-size:21px;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature p{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:flex;flex-direction:column;gap:16px}
.news-mini{
  display:flex;gap:16px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:16px;box-shadow:0 2px 10px rgba(22,89,155,.05);
  transition:background .2s ease,transform .2s ease;
}
.news-mini:hover{background:#F8FBFF;transform:translateY(-2px)}
.news-mini .thumb{width:92px;height:72px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--c-primary-soft)}
.news-mini .thumb img{width:100%;height:100%;object-fit:cover}
.news-mini h4{font-size:15px;margin:6px 0 6px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini p{font-size:13px;color:var(--c-muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge-cat{
  display:inline-block;font-size:12px;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-line);color:var(--c-muted);
}
.badge-soft{
  display:inline-block;font-size:12px;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;
}
.meta{font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.empty-state{
  background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-card);
  padding:52px 24px;text-align:center;
}
.empty-state .ico{
  width:64px;height:64px;margin:0 auto 16px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:24px;
  display:flex;align-items:center;justify-content:center;
}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:18px}

/* cta band */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary),#1E6CB4);
  border-radius:var(--r-card);padding:40px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 16px 40px rgba(22,89,155,.24);
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15px;max-width:560px}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}

/* faq */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
  border:1px solid var(--c-border)!important;border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;background:#fff;
}
.accordion-button{
  font-size:15.5px;font-weight:700;color:var(--c-title);background:#fff;
  padding:20px 22px;box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-primary-soft)}
.accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  width:26px;height:26px;font-size:13px;color:var(--c-primary);
  border:1px solid var(--c-border);border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:#fff;
}
.accordion-button:not(.collapsed)::after{content:"\f068";transform:none}
.accordion-body{font-size:15px;line-height:1.8;color:var(--c-text);padding:4px 22px 22px}

/* footer */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:72px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px}
.footer-brand p{font-size:14px;color:var(--c-muted);margin:14px 0 0;max-width:320px}
.footer-title{font-size:15px;color:var(--c-title);font-weight:700;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text);margin-bottom:12px;align-items:flex-start}
.footer-contact i{color:var(--c-primary);margin-top:4px;font-size:14px}
.footer-bottom{
  background:var(--c-bg);border-top:1px solid var(--c-border);
  padding:18px 0;font-size:13px;color:var(--c-muted);
}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-bottom a{color:var(--c-muted)}
.footer-bottom a:hover{color:var(--c-primary)}

@media (max-width:1199.98px){
  .section{padding:68px 0}
  .hero-grid{gap:34px}
  .grid-4{gap:20px}
}
@media (max-width:991.98px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{height:60px}
  .hero{padding:52px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-sub{max-width:100%}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .promise-grid{grid-template-columns:repeat(2,1fr)}
  .news-feature{grid-template-columns:1fr}
  .news-feature .media{aspect-ratio:16/9}
  .footer-main{grid-template-columns:repeat(2,1fr);gap:28px;padding:44px 0 32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
}
@media (max-width:767.98px){
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .grid-4{grid-template-columns:1fr}
  .cta-band .actions{width:100%}
  .cta-band .actions .btn{width:100%}
  .footer-bottom .container{flex-direction:column;text-align:left}
  .login-card{padding:24px 20px}
}
@media (max-width:575.98px){
  .brand-text span{display:none}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .stat-badge{flex:1 1 100%}
  .promise-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr}
  .field-row{flex-direction:column}
  .code-btn{width:100%}
}

/* roulang page: article */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-accent:#F2701D;
  --c-accent-hover:#D75F12;
  --c-heading:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E4EAF2;
  --c-line:#EEF2F7;
  --c-safe:#DFF3EA;
  --c-safe-text:#1C6B4C;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(22,89,155,.06),0 12px 28px rgba(15,23,42,.05);
  --sh-hover:0 8px 24px rgba(22,89,155,.12);
  --sh-nav:0 6px 20px rgba(15,23,42,.07);
  --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-primary:#16599B;
  --bs-body-font-family:var(--ff);
  --bs-body-color:#43536B;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
  --bs-border-color:#E4EAF2;
  --bs-body-bg:#F5F8FC;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--ff);font-size:16px;line-height:1.75;color:var(--c-text);
  background:var(--c-bg);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--c-heading);font-weight:700;line-height:1.35}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--c-primary-hover)}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(22,89,155,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-nav)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-heading);flex:0 0 auto}
.brand:hover{color:var(--c-heading)}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 6px 14px rgba(22,89,155,.28)}
.brand-text b{display:block;font-size:17px;letter-spacing:.2px;color:var(--c-heading);line-height:1.2}
.brand-text span{display:block;font-size:10.5px;letter-spacing:1.6px;color:var(--c-muted);line-height:1.3}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-menu a{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;font-size:15px;color:var(--c-text);border-radius:8px}
.nav-menu a::after{content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;background:var(--c-primary);border-radius:2px;transition:left .22s ease,right .22s ease}
.nav-menu a:hover{color:var(--c-primary)}
.nav-menu a:hover::after{left:14px;right:14px}
.nav-menu a.active{color:var(--c-primary);font-weight:700}
.nav-menu a.active::after{left:14px;right:14px}
.nav-cta{margin-left:10px;flex:0 0 auto}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--c-border);background:#fff;border-radius:12px;color:var(--c-primary);font-size:18px;align-items:center;justify-content:center}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.nav-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:1001}
.nav-mask.is-open{opacity:1;visibility:visible}

/* 按钮 */
.btn{--bs-btn-font-size:15px;--bs-btn-border-radius:var(--r-btn);font-weight:600;letter-spacing:.2px;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{--bs-btn-bg:var(--c-primary);--bs-btn-border-color:var(--c-primary);--bs-btn-color:#fff;
  --bs-btn-hover-bg:var(--c-primary-hover);--bs-btn-hover-border-color:var(--c-primary-hover);--bs-btn-hover-color:#fff;
  --bs-btn-active-bg:var(--c-primary-active);--bs-btn-active-border-color:var(--c-primary-active);--bs-btn-active-color:#fff;
  --bs-btn-disabled-bg:var(--c-primary);--bs-btn-disabled-border-color:var(--c-primary);
  --bs-btn-padding-x:24px;--bs-btn-padding-y:12px;--bs-btn-focus-shadow-rgb:22,89,155}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,89,155,.22)}
.btn-outline-primary{--bs-btn-color:var(--c-primary);--bs-btn-border-color:var(--c-primary);--bs-btn-bg:#fff;
  --bs-btn-hover-bg:var(--c-primary-soft);--bs-btn-hover-color:var(--c-primary);--bs-btn-hover-border-color:var(--c-primary);
  --bs-btn-active-bg:var(--c-primary-soft);--bs-btn-active-color:var(--c-primary);--bs-btn-active-border-color:var(--c-primary);
  --bs-btn-padding-x:24px;--bs-btn-padding-y:12px}
.btn-accent{background:var(--c-accent);border:1px solid var(--c-accent);color:#fff;padding:12px 24px;border-radius:var(--r-btn);display:inline-flex;align-items:center;gap:8px}
.btn-accent:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(242,112,29,.24)}
.btn-link-plain{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:6px 0}
.btn-link-plain:hover{text-decoration:underline}

/* 徽章 */
.badge-pill{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);padding:5px 12px;font-size:12px;font-weight:600;line-height:1.5}
.badge-soft{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-neutral{background:#F1F4F9;color:#5A6B82}
.badge-safe{background:var(--c-safe);color:var(--c-safe-text)}

/* 面包屑与横幅 */
.page-banner{position:relative;overflow:hidden;padding:52px 0 46px;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat}
.page-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,58,102,.86),rgba(22,89,155,.74))}
.page-banner .container{position:relative;z-index:2}
.breadcrumb-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:16px}
.breadcrumb-bar a{color:rgba(255,255,255,.86)}
.breadcrumb-bar a:hover{color:#fff;text-decoration:underline}
.breadcrumb-bar .sep{opacity:.55}
.breadcrumb-bar .now{color:#fff}
.banner-kicker{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;font-weight:600;letter-spacing:.4px}
.banner-note{margin-top:12px;font-size:14px;color:rgba(255,255,255,.8)}

/* 文章主体 */
.article-section{padding:56px 0 64px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:start}
.article-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:40px 44px 34px}
.article-head{max-width:760px}
.article-head h1{font-size:clamp(26px,3.4vw,36px);line-height:1.4;letter-spacing:-.2px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;padding-bottom:20px;border-bottom:1px solid var(--c-line);font-size:14px;color:var(--c-muted)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-primary);font-size:13px}
.article-body{max-width:760px;margin-top:26px;font-size:17px;line-height:1.9;color:#3B4A61}
.article-body>p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:26px;line-height:1.45;margin:2em 0 .8em;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--c-primary)}
.article-body h3{font-size:20px;margin:1.6em 0 .6em;color:var(--c-heading)}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;color:var(--c-heading)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul li{list-style:disc;margin-bottom:8px}
.article-body ol li{list-style:decimal;margin-bottom:8px}
.article-body blockquote{margin:1.5em 0;background:var(--c-primary-soft);border-radius:12px;padding:18px 20px;color:#2C4A6E}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.4em auto}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(22,89,155,.35)}
.article-body a:hover{color:var(--c-primary-hover);border-bottom-color:var(--c-primary-hover)}
.article-body code{background:#F1F5FA;border:1px solid var(--c-border);border-radius:6px;padding:2px 6px;font-size:15px;color:#2C4A6E}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 14px;text-align:left}
.article-body th{background:var(--c-primary-soft);color:var(--c-heading);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}

/* 标签 */
.tag-block{max-width:760px;margin-top:34px;padding-top:22px;border-top:1px solid var(--c-line)}
.tag-label{font-size:14px;color:var(--c-muted);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-list .badge-pill{padding:7px 14px;font-size:13px}

/* 文章底部导航 */
.article-foot{max-width:760px;margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.article-foot .spacer{flex:1 1 auto}

/* 侧栏目录 */
.article-side{position:sticky;top:96px}
.toc-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:20px 18px}
.toc-title{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:15px;font-weight:700;color:var(--c-heading);margin-bottom:14px}
.toc-title span{display:inline-flex;align-items:center;gap:8px}
.toc-title i{color:var(--c-primary)}
.toc-chevron{display:none;color:var(--c-muted);font-size:13px;transition:transform .2s ease}
.toc-card.is-open .toc-chevron{transform:rotate(180deg)}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--c-line)}
.toc-link{display:block;padding:7px 12px;font-size:14px;color:var(--c-text);border-left:2px solid transparent;margin-left:-2px;line-height:1.55}
.toc-link:hover{background:#F8FBFF;color:var(--c-primary)}
.toc-link.is-active{color:var(--c-primary);font-weight:700;border-left-color:var(--c-primary);background:#F8FBFF}
.toc-empty{font-size:13px;color:var(--c-muted);line-height:1.7;margin:0}
.toc-tip{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);line-height:1.7}

/* 空态 */
.empty-state{text-align:center;padding:56px 20px;background:#FBFDFF;border:1px dashed var(--c-border);border-radius:var(--r-card)}
.empty-icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:24px}
.empty-title{font-size:19px;font-weight:700;color:var(--c-heading);margin-bottom:8px}
.empty-desc{font-size:15px;color:var(--c-muted);margin-bottom:20px}

/* 通用板块 */
.section{padding:68px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.2px}
.section-head p{margin:10px 0 0;font-size:15px;color:var(--c-muted);max-width:640px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--c-primary);margin-bottom:10px;text-transform:uppercase}
.section-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-accent)}

/* 卡片 */
.card-grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.info-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D3E1F1}
.info-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.info-card:hover .thumb img{transform:scale(1.04)}
.info-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.info-card h3{font-size:19px;line-height:1.5}
.info-card p{font-size:14px;color:var(--c-muted);line-height:1.8;margin:0}
.info-card .meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted);margin-top:auto;padding-top:6px}
.info-card .more{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.info-card:hover .more{gap:10px}

/* 帮助条 */
.help-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.help-item{display:flex;gap:14px;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease}
.help-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.help-item .ico{flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px}
.help-item h3{font-size:17px;margin-bottom:6px}
.help-item p{font-size:14px;color:var(--c-muted);margin:0 0 8px}

/* 转化条 */
.cta-band{background:var(--c-primary);border-radius:var(--r-card);padding:40px 44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;box-shadow:0 16px 36px rgba(22,89,155,.22)}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-band p{color:rgba(255,255,255,.82);margin:10px 0 0;font-size:15px;max-width:620px}
.cta-band .btn-accent{white-space:nowrap}
.cta-wrap{padding:0 0 72px}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:8px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 44px}
.footer-brand p{font-size:14px;color:var(--c-muted);margin:16px 0 0;max-width:300px;line-height:1.8}
.footer-title{font-size:15px;font-weight:700;color:var(--c-heading);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text);margin-bottom:12px;align-items:flex-start}
.footer-contact i{color:var(--c-primary);margin-top:5px}
.footer-bottom{background:var(--c-bg);border-top:1px solid var(--c-line)}
.footer-bottom .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:18px;padding-bottom:18px;font-size:13px;color:var(--c-muted)}

@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 228px;gap:28px}
  .article-card{padding:34px 32px 30px}
  .section{padding:60px 0}
}
@media (max-width:991px){
  .nav-menu{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;flex-direction:column;align-items:stretch;gap:4px;padding:88px 20px 28px;transform:translateX(105%);transition:transform .3s ease;box-shadow:-16px 0 40px rgba(15,23,42,.16);z-index:1002;overflow-y:auto;margin-left:0}
  .nav-menu.is-open{transform:none}
  .nav-menu a{height:48px;padding:0 12px;font-size:16px;border-radius:10px}
  .nav-menu a::after{display:none}
  .nav-menu a:hover,.nav-menu a.active{background:var(--c-primary-soft)}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-menu .drawer-cta{display:inline-flex;justify-content:center;margin-top:14px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;order:2}
  .toc-list{display:none}
  .toc-card.is-open .toc-list{display:flex}
  .toc-chevron{display:block}
  .toc-title{cursor:pointer}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .help-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  .article-card{padding:26px 20px 24px;border-radius:12px}
  .page-banner{padding:38px 0 34px}
  .article-body{font-size:17px;line-height:1.85}
  .article-body h2{font-size:22px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .help-strip{grid-template-columns:minmax(0,1fr)}
  .section{padding:48px 0}
  .cta-wrap{padding-bottom:56px}
  .cta-band{border-radius:12px}
  .cta-band .btn-accent{width:100%;justify-content:center}
  .article-foot .btn,.article-foot .btn-accent{width:100%;justify-content:center}
  .footer-main{grid-template-columns:1fr;gap:26px;padding:44px 0 32px}
  .footer-bottom .container{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .brand-text b{font-size:15.5px}
  .article-meta{gap:8px 14px;font-size:13px}
  .banner-kicker{font-size:12px}
}

/* roulang page: category2 */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-accent:#F2701D;
  --c-title:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E4EAF2;
  --c-divider:#EEF2F7;
  --c-safe:#DFF3EA;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(22,89,155,.06), 0 12px 28px rgba(15,23,42,.05);
  --sh-card-hover:0 8px 24px rgba(22,89,155,.12);
  --sh-nav:0 6px 20px rgba(15,23,42,.07);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --bs-primary:#16599B;
  --bs-primary-rgb:22,89,155;
  --bs-body-font-family:var(--font-cn);
  --bs-body-color:#43536B;
  --bs-body-bg:#F5F8FC;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
  --bs-border-color:#E4EAF2;
  --bs-border-radius:10px;
  --bs-focus-ring-color:rgba(22,89,155,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;line-height:1.3}
p{margin:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-hover)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.container-narrow{max-width:1000px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-nav)}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--c-title);
}
.brand:hover{color:var(--c-title)}
.brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#16599B,#0D3A66);
  color:#fff;
  font-size:17px;
  box-shadow:0 6px 16px rgba(22,89,155,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:10px;letter-spacing:1.6px;color:var(--c-muted);font-weight:600}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--c-text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:6px;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transition:left .25s ease,right .25s ease;
}
.nav-menu a:hover{color:var(--c-primary);background:#F8FBFF}
.nav-menu a:hover::after{left:14px;right:14px}
.nav-menu a.active{color:var(--c-primary);font-weight:700}
.nav-menu a.active::after{left:14px;right:14px}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-primary);
  border-radius:var(--r-pill);
  font-size:18px;
  cursor:pointer;
}
.nav-drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:300px;
  max-width:86vw;
  background:#fff;
  z-index:1200;
  transform:translateX(100%);
  transition:transform .3s ease;
  padding:22px 20px;
  overflow-y:auto;
  box-shadow:-12px 0 40px rgba(15,23,42,.16);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;margin-bottom:12px;border-bottom:1px solid var(--c-divider);
  font-weight:700;color:var(--c-title);
}
.nav-drawer-close{
  width:38px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  cursor:pointer;font-size:16px;
}
.nav-drawer nav{display:flex;flex-direction:column;gap:4px}
.nav-drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--c-text);font-size:15px;
}
.nav-drawer nav a:hover{background:#F8FBFF;color:var(--c-primary)}
.nav-drawer nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700}
.nav-drawer .btn{width:100%;justify-content:center;margin-top:18px}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  z-index:1100;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--c-primary);color:#fff;border-color:var(--c-primary);
  box-shadow:0 6px 16px rgba(22,89,155,.18);
}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(22,89,155,.24)}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-accent:hover{background:#D95F13;border-color:#D95F13;color:#fff;transform:translateY(-1px)}
.btn-outline{
  background:#fff;color:var(--c-primary);border-color:var(--c-primary);
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:6px 0;border:0}
.btn-ghost:hover{color:var(--c-primary-hover);text-decoration:underline}
.btn-lg{padding:14px 30px;font-size:16px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-gray{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:#F1F4F9;color:#5C6B82;font-size:12px;font-weight:600;
}
.badge-safe{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-safe);color:#1E6B52;font-size:12px;font-weight:600;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-divider)}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:14px;color:var(--c-muted);
}
.crumb a{color:var(--c-text)}
.crumb a:hover{color:var(--c-primary)}
.crumb i{font-size:10px;color:#C3CCD9}
.crumb .current{color:var(--c-primary);font-weight:600}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  min-height:264px;
  display:flex;align-items:center;
  margin:24px 0 0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,58,102,.88),rgba(22,89,155,.62) 58%,rgba(22,89,155,.42));
}
.cat-hero-inner{position:relative;padding:44px 40px;max-width:760px}
.cat-hero h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,44px);
  letter-spacing:.4px;
  margin:14px 0 14px;
}
.cat-hero p{color:rgba(255,255,255,.9);font-size:16px;max-width:620px}
.cat-hero .badge-soft{background:rgba(255,255,255,.16);color:#fff;backdrop-filter:blur(2px)}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:22px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.22);
}
.hero-metrics div{color:#fff}
.hero-metrics b{
  display:block;font-size:24px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.hero-metrics span{font-size:13px;color:rgba(255,255,255,.82)}

/* ---------- 分类页2 主布局：左锚点 + 右两列大卡 ---------- */
.cat2-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:32px;
  align-items:start;
  padding:56px 0 8px;
}
.anchor-side{position:sticky;top:96px}
.anchor-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:20px;
}
.anchor-card h2{font-size:15px;letter-spacing:.4px;margin-bottom:14px}
.anchor-card ol{display:flex;flex-direction:column;gap:2px}
.anchor-card a{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 10px;border-radius:10px;
  font-size:14.5px;color:var(--c-text);
}
.anchor-card a i{color:#B7C4D6;font-size:7px;transition:color .2s ease}
.anchor-card a:hover{background:#F8FBFF;color:var(--c-primary)}
.anchor-card a:hover i{color:var(--c-primary)}
.anchor-note{
  margin-top:16px;padding:14px;border-radius:12px;
  background:var(--c-primary-soft);font-size:13px;color:#33526F;line-height:1.7;
}
.anchor-note b{color:var(--c-primary)}
.anchor-side .btn{width:100%;margin-top:14px}

.cat2-main{display:flex;flex-direction:column;gap:40px}
.sec-head{margin-bottom:20px}
.sec-head h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:8px}
.sec-head p{font-size:15px;color:var(--c-muted);max-width:680px}
.big-card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.big-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.big-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover)}
.big-card .thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9EFF7;
}
.big-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.big-card:hover .thumb img{transform:scale(1.04)}
.thumb-tag{
  position:absolute;left:14px;top:14px;
  background:rgba(255,255,255,.94);color:var(--c-primary);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);
}
.big-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.big-card h3{font-size:20px}
.big-card p{font-size:14px;color:var(--c-text)}
.point-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.point-list li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:14px;color:var(--c-muted);line-height:1.7;
}
.point-list li i{color:var(--c-primary);font-size:12px;margin-top:6px}
.big-card .foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-divider);display:flex;justify-content:space-between;align-items:center}
.big-card .foot a{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.big-card .foot a i{font-size:11px;transition:transform .2s ease}
.big-card .foot a:hover i{transform:translateX(3px)}

/* ---------- 观赛流程 ---------- */
.steps-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:32px;
}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{position:relative;padding-top:6px}
.step-no{
  width:38px;height:38px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 6px 14px rgba(22,89,155,.22);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin:14px 0 6px}
.step p{font-size:14px;color:var(--c-muted)}

/* ---------- 保障条 ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guard{
  border-radius:var(--r-card);padding:22px;
  border:1px solid transparent;display:flex;flex-direction:column;gap:8px;
}
.guard.blue{background:var(--c-primary-soft);border-color:#D3E3F5}
.guard.green{background:var(--c-safe);border-color:#C9E9DB}
.guard i{font-size:18px;color:var(--c-primary)}
.guard.green i{color:#1E6B52}
.guard b{font-size:16px;color:var(--c-title)}
.guard span{font-size:14px;color:#4F6479}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:12px 24px}
.faq-wrap .accordion-item{border:0;border-bottom:1px solid var(--c-divider);background:transparent}
.faq-wrap .accordion-item:last-child{border-bottom:0}
.faq-wrap .accordion-button{
  background:transparent;color:var(--c-title);
  font-size:15px;font-weight:700;padding:20px 4px;box-shadow:none;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent}
.faq-wrap .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-wrap .accordion-button::after{
  background-image:none;
  content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;
  color:var(--c-primary);
  width:auto;height:auto;transform:none;line-height:1;
}
.faq-wrap .accordion-button:not(.collapsed)::after{content:"\f068"}
.faq-wrap .accordion-body{padding:0 4px 20px;font-size:15px;line-height:1.85;color:var(--c-text)}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.related-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);border-color:#CFE0F2}
.related-card i{color:var(--c-primary);font-size:18px}
.related-card b{font-size:16px;color:var(--c-title)}
.related-card span{font-size:13.5px;color:var(--c-muted);line-height:1.7}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:linear-gradient(100deg,#16599B,#0D3A66);
  border-radius:var(--r-card);
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 14px 34px rgba(13,58,102,.22);
}
.cta-bar h2{color:#fff;font-size:clamp(21px,2.4vw,27px);margin-bottom:8px}
.cta-bar p{color:rgba(255,255,255,.85);font-size:15px;max-width:600px}
.cta-bar .btn{flex:0 0 auto}
.cta-bar .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.cta-bar .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-line);margin-top:72px}
.footer-main{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:56px 0 40px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--c-muted);max-width:320px}
.footer-title{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--c-text)}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-muted)}
.footer-contact i{color:var(--c-primary);margin-top:5px;font-size:13px}
.footer-bottom{background:var(--c-bg);border-top:1px solid var(--c-divider)}
.footer-bottom .container{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;padding-bottom:16px;
  font-size:13px;color:var(--c-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .cat2-layout{grid-template-columns:230px minmax(0,1fr);gap:24px}
  .cta-bar{padding:32px}
}
@media (max-width:991.98px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:grid;place-items:center;margin-left:auto}
  .nav-wrap{height:60px;gap:12px}
  .brand-mark{width:36px;height:36px;font-size:15px;border-radius:10px}
  .brand-text b{font-size:15.5px}
  .cat2-layout{grid-template-columns:1fr;padding-top:40px}
  .anchor-side{position:static}
  .anchor-card ol{flex-direction:row;flex-wrap:wrap;gap:8px}
  .anchor-card a{background:#F6F9FD;padding:0 12px;min-height:40px}
  .anchor-note,.anchor-side .btn{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:repeat(2,1fr);gap:28px;padding:44px 0 32px}
  .cta-bar{flex-direction:column;align-items:flex-start}
}
@media (max-width:767.98px){
  .cat-hero-inner{padding:32px 24px}
  .hero-metrics{gap:20px;margin-top:18px;padding-top:16px}
  .hero-metrics b{font-size:20px}
  .big-card-grid{grid-template-columns:1fr;gap:16px}
  .cat2-layout{padding-top:32px;gap:32px}
  .cat2-main{gap:32px}
  .steps-wrap{padding:24px}
  .faq-wrap{padding:6px 16px}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .cat-hero{min-height:0;border-radius:12px}
  .cat-hero-inner{padding:28px 20px}
  .cat-hero h1{font-size:26px}
  .steps{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-bar{padding:26px 20px;border-radius:12px}
  .cta-bar .btn{width:100%}
  .cta-actions{width:100%}
  .footer-main{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-accent:#F2701D;
  --c-title:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E4EAF2;
  --c-divider:#EEF2F7;
  --c-safe:#DFF3EA;

  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;

  --shadow-card:0 2px 10px rgba(22,89,155,.06), 0 12px 28px rgba(15,23,42,.05);
  --shadow-hover:0 8px 24px rgba(22,89,155,.12);
  --shadow-nav:0 6px 18px rgba(15,23,42,.06);

  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:72px;

  --bs-primary:#16599B;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-color:#43536B;
  --bs-border-color:#E4EAF2;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;line-height:1.3;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-hover);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1200px){.container{max-width:1200px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--c-primary);
  color:#fff;
  font-size:17px;
  box-shadow:0 6px 14px rgba(22,89,155,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:16px;color:var(--c-title);font-weight:700;letter-spacing:.2px;}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:1.4px;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--c-text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;bottom:4px;
  height:2px;width:0;
  background:var(--c-primary);
  transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.active{color:var(--c-primary);font-weight:700;}
.nav-menu a.active::after{width:60%;}
.nav-cta{
  flex-shrink:0;
  margin-left:12px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-border);
  background:#fff;
  color:var(--c-primary);
  border-radius:999px;
  font-size:17px;
  margin-left:auto;
}

/* ---------- 抽屉导航 ---------- */
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:300px;height:100%;
  background:#fff;
  z-index:1060;
  transform:translateX(100%);
  transition:transform .28s ease;
  padding:24px 22px;
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer .drawer-title{font-size:13px;color:var(--c-muted);letter-spacing:1px;margin-bottom:8px;}
.nav-drawer a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:10px;
  color:var(--c-text);
  font-size:15px;
}
.nav-drawer a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.nav-drawer a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;}
.nav-drawer .btn{margin-top:16px;width:100%;}
.nav-backdrop{
  position:fixed;inset:0;
  background:rgba(15,23,42,.45);
  z-index:1050;
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.nav-backdrop.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .22s ease;
  min-height:44px;
  line-height:1;
}
.btn-primary,
.btn-primary:focus{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(22,89,155,.18);
}
.btn-primary:hover{
  background:var(--c-primary-hover);
  border-color:var(--c-primary-hover);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(22,89,155,.24);
}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:translateY(0);}
.btn-outline,
.btn-outline:focus{
  background:#fff;
  border-color:var(--c-primary);
  color:var(--c-primary);
}
.btn-outline:hover{
  background:var(--c-primary-soft);
  border-color:var(--c-primary);
  color:var(--c-primary-hover);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  color:var(--c-primary);
  padding:8px 0;
  min-height:auto;
  font-weight:600;
}
.btn-ghost:hover{color:var(--c-primary-hover);text-decoration:underline;}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
}
.badge-neutral{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:#F1F4F9;
  color:var(--c-muted);
  font-size:12px;
  font-weight:600;
}
.badge-accent{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(242,112,29,.12);
  color:#C4550E;
  font-size:12px;
  font-weight:600;
}

/* ---------- 面包屑 + 首屏 ---------- */
.crumb-bar{
  background:#fff;
  border-bottom:1px solid var(--c-divider);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  padding:14px 0;
  font-size:14px;
  color:var(--c-muted);
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CCDA;}
.crumb .current{color:var(--c-title);font-weight:600;}

.page-hero{padding:28px 0 0;}
.page-hero-inner{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  min-height:268px;
  display:flex;
  align-items:center;
  background-image:linear-gradient(120deg, rgba(13,58,102,.78) 0%, rgba(17,71,124,.52) 48%, rgba(13,58,102,.30) 100%), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  padding:44px 48px;
}
.page-hero-inner .hero-copy{max-width:660px;}
.page-hero-inner h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,44px);
  letter-spacing:.4px;
  margin-bottom:16px;
}
.page-hero-inner .hero-lead{
  color:rgba(255,255,255,.92);
  font-size:16px;
  line-height:1.8;
  max-width:560px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
  font-size:13px;
  backdrop-filter:blur(2px);
}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--c-text);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:1.6px;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);border-radius:2px;}

/* ---------- 图文交错行 ---------- */
.zebra-list{display:flex;flex-direction:column;gap:56px;}
.zebra-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.zebra-row.reverse .zebra-media{order:2;}
.zebra-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--shadow-card);
  background:#fff;
}
.zebra-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s ease;
}
.zebra-row:hover .zebra-media img{transform:scale(1.03);}
.zebra-body h3{font-size:22px;margin-bottom:14px;}
.zebra-body > p{font-size:16px;color:var(--c-text);margin-bottom:20px;}
.zebra-points{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;}
.zebra-points li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:15px;
  color:var(--c-text);
  line-height:1.7;
}
.zebra-points li i{
  color:var(--c-primary);
  margin-top:5px;
  font-size:13px;
}
.zebra-row:nth-child(even) .zebra-media{border-color:#DCE6F3;}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.stat-cell{
  padding:28px 24px;
  border-right:1px solid var(--c-divider);
}
.stat-cell:last-child{border-right:none;}
.stat-cell .num{
  font-size:26px;
  font-weight:700;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-cell .num em{font-style:normal;font-size:14px;font-weight:600;margin-left:2px;color:var(--c-primary);}
.stat-cell .label{font-size:14px;color:var(--c-title);font-weight:600;margin-top:10px;}
.stat-cell .desc{font-size:13px;color:var(--c-muted);margin-top:6px;line-height:1.6;}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  padding:28px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease, box-shadow .22s ease;
  height:100%;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-no{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;
  font-size:16px;
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--c-text);line-height:1.75;}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  height:100%;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F2;}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-card .rel-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.rel-card h3{font-size:18px;}
.rel-card p{font-size:14px;color:var(--c-text);line-height:1.7;}
.rel-card .rel-more{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.rel-card:hover .rel-more{gap:10px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  padding:10px 26px;
  box-shadow:var(--shadow-card);
}
.accordion-item{
  border:none;
  border-bottom:1px solid var(--c-divider);
  background:transparent;
}
.accordion-item:last-child{border-bottom:none;}
.accordion-button{
  background:transparent;
  color:var(--c-title);
  font-size:16px;
  font-weight:700;
  padding:22px 44px 22px 0;
  box-shadow:none;
  line-height:1.55;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:none;}
.accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--c-primary);
  width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  position:absolute;right:0;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{
  padding:0 40px 24px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text);
}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(115deg, var(--c-primary) 0%, #124a80 100%);
  border-radius:var(--radius-card);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:0 14px 34px rgba(22,89,155,.20);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;max-width:620px;}
.cta-band .btn-light-solid{
  background:#fff;
  color:var(--c-primary);
  border-color:#fff;
  font-weight:700;
  flex-shrink:0;
}
.cta-band .btn-light-solid:hover{background:#EAF3FC;color:var(--c-primary-hover);transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-border);
  margin-top:24px;
}
.footer-main{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:64px 0 48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--c-text);line-height:1.8;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:var(--c-text);}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--c-text);
  margin-bottom:14px;
  line-height:1.6;
}
.footer-contact i{color:var(--c-primary);margin-top:4px;}
.footer-bottom{
  background:var(--c-bg);
  border-top:1px solid var(--c-divider);
  padding:20px 0;
}
.footer-bottom .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--c-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-wrap{gap:16px;}
  .nav-menu a{padding:10px 10px;font-size:14px;}
  .footer-main{gap:32px;}
}
@media (max-width:991px){
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{height:60px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .zebra-row{grid-template-columns:1fr;gap:28px;}
  .zebra-row.reverse .zebra-media{order:0;}
  .zebra-list{gap:44px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:none;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--c-divider);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-main{grid-template-columns:1fr 1fr;padding:48px 0 36px;}
  .page-hero-inner{padding:36px 32px;min-height:240px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .cta-band .btn{width:100%;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .steps{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{border-right:none;border-bottom:1px solid var(--c-divider);}
  .stat-cell:last-child{border-bottom:none;}
  .page-hero-inner{padding:30px 22px;min-height:220px;}
  .faq-wrap{padding:6px 18px;}
  .accordion-button{font-size:15px;padding:18px 36px 18px 0;}
  .accordion-body{padding:0 24px 20px 0;}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .footer-main{grid-template-columns:1fr;gap:28px;}
  .hero-tags span{font-size:12px;padding:6px 12px;}
  .zebra-body h3{font-size:20px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-accent:#F2701D;
  --c-accent-hover:#D95E12;
  --c-title:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E4EAF2;
  --c-line:#EEF2F7;
  --c-safe:#DFF3EA;
  --c-safe-text:#1B7A57;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(22,89,155,.06),0 12px 28px rgba(15,23,42,.05);
  --sh-card-hover:0 8px 24px rgba(22,89,155,.12);
  --sh-btn:0 6px 16px rgba(22,89,155,.18);
  --nav-h:72px;
  --bs-primary:#16599B;
  --bs-primary-rgb:22,89,155;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
  --bs-body-color:#43536B;
  --bs-body-bg:#F5F8FC;
  --bs-border-color:#E4EAF2;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-hover);}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,23,42,.07);}
.nav-wrap{display:flex;align-items:center;gap:24px;min-height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#16599B,#1E6FB8);
  color:#fff;font-size:18px;
  box-shadow:0 6px 14px rgba(22,89,155,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;color:var(--c-title);letter-spacing:.2px;}
.brand-text span{font-size:10px;letter-spacing:1.6px;color:var(--c-muted);}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-menu a{
  position:relative;
  padding:10px 14px;
  font-size:15px;color:var(--c-text);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:2px;background:var(--c-primary);
  transform:translateX(-50%);
  transition:width .25s ease;
}
.nav-menu a:hover{color:var(--c-primary);background:#F8FBFF;}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.active{color:var(--c-primary);font-weight:700;}
.nav-menu a.active::after{width:60%;}
.nav-cta{flex-shrink:0;margin-left:8px;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--c-border);background:#fff;color:var(--c-primary);
  font-size:17px;cursor:pointer;transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:#CFE1F4;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:1040;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:1050;
  width:300px;max-width:86vw;height:100%;
  background:#fff;box-shadow:-10px 0 30px rgba(15,23,42,.16);
  padding:22px 20px;
  transform:translateX(105%);transition:transform .32s ease;
  overflow-y:auto;
}
.nav-drawer.show{transform:translateX(0);}
.nav-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.nav-drawer-head span{font-weight:700;color:var(--c-title);}
.drawer-close{width:38px;height:38px;border:1px solid var(--c-border);border-radius:50%;background:#fff;color:var(--c-text);cursor:pointer;}
.nav-drawer nav{display:flex;flex-direction:column;gap:4px;}
.nav-drawer nav a{
  padding:12px 14px;border-radius:10px;color:var(--c-text);font-size:15px;
}
.nav-drawer nav a:hover{background:var(--c-bg);color:var(--c-primary);}
.nav-drawer nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;}
.nav-drawer .btn{width:100%;margin-top:18px;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:all .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-btn);}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--c-primary-active);transform:translateY(0);}
.btn-outline{
  background:#fff;color:var(--c-primary);border-color:#BFD8EF;
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(242,112,29,.28);}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);}
.btn-link{background:none;border:none;color:var(--c-primary);padding:0;font-weight:600;}
.btn-link:hover{text-decoration:underline;}

/* ---------- 徽章与标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;
}
.badge-neutral{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:#F1F4F9;color:var(--c-muted);font-size:12px;
}
.badge-safe{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-safe);color:var(--c-safe-text);font-size:12px;font-weight:600;
}

/* ---------- 内页顶部 ---------- */
.page-hero{position:relative;overflow:hidden;border-radius:var(--r-card);margin-top:22px;}
.page-hero-media{position:relative;height:280px;}
.page-hero-media img{width:100%;height:100%;object-fit:cover;}
.page-hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(13,58,102,.82),rgba(22,89,155,.55));
}
.page-hero-body{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;
  padding:0 clamp(20px,5vw,56px);max-width:760px;
}
.page-hero-body h1{color:#fff;font-size:clamp(26px,3.6vw,40px);margin-bottom:12px;}
.page-hero-body p{color:rgba(255,255,255,.92);font-size:16px;max-width:620px;}
.crumbs{font-size:13px;color:var(--c-muted);padding:18px 0 0;}
.crumbs a{color:var(--c-muted);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span{margin:0 6px;color:#C3CDDB;}

/* ---------- 板块 ---------- */
.section{padding:72px 0;}
.section-alt{background:#fff;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,30px);margin-bottom:12px;}
.section-head p{color:var(--c-muted);font-size:15px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.5px;margin-bottom:12px;}

/* ---------- 数据条 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);transition:all .25s ease;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);}
.stat-card .num{
  font-size:30px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-card .num i{font-size:18px;margin-right:6px;}
.stat-card .lbl{font-size:15px;font-weight:600;color:var(--c-title);margin-top:8px;}
.stat-card .desc{font-size:13px;color:var(--c-muted);margin-top:6px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:23px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,#CFE1F4,#E8F1FA);
}
.tl-item{position:relative;display:flex;gap:22px;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-index{
  position:relative;z-index:1;flex-shrink:0;
  width:48px;height:48px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;font-variant-numeric:tabular-nums;
  box-shadow:0 4px 12px rgba(22,89,155,.14);
}
.tl-card{
  flex:1;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-card);transition:all .25s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);}
.tl-card h3{font-size:19px;margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--c-text);}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}

/* ---------- 权益卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);transition:all .25s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:19px;margin-bottom:10px;}
.card-body p{font-size:14px;color:var(--c-muted);flex:1;}
.card-foot{margin-top:16px;display:flex;align-items:center;gap:8px;color:var(--c-primary);font-size:14px;font-weight:600;}
.card-icon{
  width:42px;height:42px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;
}

/* ---------- 权益清单 ---------- */
.points{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.points-row{
  display:grid;grid-template-columns:220px 1fr;gap:24px;
  padding:20px 24px;border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.points-row:last-child{border-bottom:none;}
.points-row:hover{background:#F8FBFF;}
.points-label{font-weight:700;color:var(--c-title);font-size:15px;display:flex;align-items:center;gap:8px;}
.points-label i{color:var(--c-primary);font-size:14px;}
.points-desc{font-size:15px;color:var(--c-text);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion-item{
  border:1px solid var(--c-border)!important;border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;background:#fff;
  box-shadow:0 2px 8px rgba(15,23,42,.03);
}
.accordion-button{
  font-size:16px;font-weight:700;color:var(--c-title);background:#fff;
  padding:18px 22px;box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:#F8FBFF;}
.accordion-button::after{
  background-image:none;
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:14px;color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{content:"\f068";transform:none;}
.accordion-body{padding:4px 22px 20px;font-size:15px;line-height:1.8;color:var(--c-text);}

/* ---------- 互链 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);transition:all .25s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);}
.related-card b{font-size:16px;color:var(--c-title);}
.related-card span{font-size:14px;color:var(--c-muted);}
.related-card i{color:var(--c-primary);}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#16599B,#1E6FB8);
  border-radius:var(--r-card);
  padding:42px clamp(24px,4vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 16px 36px rgba(22,89,155,.24);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;}
.cta-band .btn-accent{background:var(--c-accent);color:#fff;}
.cta-band .btn-ghost{
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.4);
}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:72px;}
.footer-main{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
  padding:56px 0 40px;
}
.footer-brand p{font-size:14px;color:var(--c-muted);margin-top:14px;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--c-text);}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-muted);margin-bottom:12px;}
.footer-contact i{color:var(--c-primary);margin-top:4px;}
.footer-bottom{background:var(--c-bg);border-top:1px solid var(--c-line);padding:16px 0;}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-menu a{padding:10px 10px;font-size:14px;}
  .stat-row{gap:18px;}
}
@media (max-width:991px){
  :root{--nav-h:60px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .brand-text b{font-size:16px;}
  .section{padding:56px 0;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
  .page-hero-media{height:250px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;justify-content:center;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .section{padding:48px 0;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .points-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .page-hero-media{height:230px;}
  .page-hero-body{padding:0 22px;}
  .tl-item{gap:14px;}
  .tl-index{width:40px;height:40px;font-size:15px;}
  .timeline::before{left:19px;}
  .tl-card{padding:18px;}
  .footer-main{grid-template-columns:1fr;}
  .footer-bottom .container{justify-content:center;text-align:center;}
}
@media (max-width:519px){
  .brand-text span{display:none;}
  .brand-mark{width:36px;height:36px;font-size:16px;}
  .container{padding:0 16px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#16599B;
  --c-primary-hover:#11477C;
  --c-primary-active:#0D3A66;
  --c-primary-soft:#E8F1FA;
  --c-primary-soft-2:#F2F7FD;
  --c-accent:#F2701D;
  --c-accent-hover:#D95F10;
  --c-title:#0F172A;
  --c-text:#43536B;
  --c-muted:#7C8AA0;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E4EAF2;
  --c-line:#EEF2F7;
  --c-safe:#DFF3EA;
  --c-safe-text:#186B4C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-card:0 2px 10px rgba(22,89,155,.06),0 12px 28px rgba(15,23,42,.05);
  --shadow-card-hover:0 8px 24px rgba(22,89,155,.12);
  --shadow-nav:0 6px 18px rgba(15,23,42,.07);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-primary:#16599B;
  --bs-primary-rgb:22,89,155;
  --bs-body-font-family:var(--font-cn);
  --bs-body-color:#43536B;
  --bs-border-color:#E4EAF2;
  --bs-link-color:#16599B;
  --bs-link-hover-color:#11477C;
  --bs-border-radius:14px;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-card);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 12px;color:var(--c-title);font-weight:700;line-height:1.35;}
h1{font-size:clamp(28px,4.2vw,44px);}
h2{font-size:clamp(23px,2.4vw,30px);}
h3{font-size:20px;}
p{margin:0 0 14px;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-hover);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
.section{padding:76px 0;}
.section-sm{padding:52px 0;}
.section-alt{background:var(--c-bg);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head p{color:var(--c-muted);font-size:16px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.tnum{font-variant-numeric:tabular-nums;}

/* ===== header / nav ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-nav);}
.nav-wrap{
  height:72px;display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary),#2A79C4);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;box-shadow:0 6px 14px rgba(22,89,155,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;color:var(--c-title);letter-spacing:.01em;}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.14em;}
.nav-menu{
  display:flex;align-items:center;gap:4px;margin-left:auto;
}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;font-size:15px;color:var(--c-text);
  font-weight:500;border-radius:8px;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--c-primary);background:var(--c-primary-soft-2);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-primary);font-weight:700;background:transparent;}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-cta{
  margin-left:10px;flex-shrink:0;
}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-border);background:#fff;color:var(--c-primary);
  font-size:18px;align-items:center;justify-content:center;
}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1035;
}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;transition:all .22s ease;
  min-height:44px;
}
.btn-primary{
  background:var(--c-primary);color:#fff;border-color:var(--c-primary);
  box-shadow:0 6px 16px rgba(22,89,155,.18);
}
.btn-primary:hover{
  background:var(--c-primary-hover);border-color:var(--c-primary-hover);
  color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(22,89,155,.24);
}
.btn-primary:active{background:var(--c-primary-active);transform:translateY(0);}
.btn-outline{
  background:#fff;color:var(--c-primary);border-color:#BFD5EC;
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary);}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);}
.btn-link{color:var(--c-primary);font-weight:600;padding:0;min-height:auto;}
.btn-link:hover{text-decoration:underline;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;}

/* ===== badges / tags ===== */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-neutral{background:#F1F4F9;color:#5B6980;}
.badge-safe{background:var(--c-safe);color:var(--c-safe-text);}

/* ===== breadcrumb ===== */
.crumb-bar{border-bottom:1px solid var(--c-line);background:#fff;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:var(--c-muted);padding:14px 0;
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C6D0DE;}
.crumb .now{color:var(--c-title);font-weight:600;}

/* ===== hero ===== */
.hero-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  min-height:268px;display:flex;align-items:center;
  background:#123f6d url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  margin-top:24px;
}
.hero-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(13,58,102,.86),rgba(22,89,155,.55));
}
.hero-inner{position:relative;z-index:2;padding:48px 44px;max-width:780px;color:#fff;}
.hero-inner h1{color:#fff;margin-bottom:14px;text-shadow:0 2px 12px rgba(6,26,48,.35);}
.hero-inner p{color:rgba(255,255,255,.9);font-size:16.5px;margin:0 0 22px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;}
.hero-pills span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  color:#fff;
}

/* ===== lead ===== */
.lead-band{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:var(--c-primary-soft);border:1px solid #D3E4F5;
  border-radius:var(--radius-card);padding:20px 24px;margin-top:26px;
}
.lead-band i{color:var(--c-primary);font-size:20px;}
.lead-band p{margin:0;color:#2C4666;font-size:15.5px;}

/* ===== grid cards (图文网格) ===== */
.grid-2{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.feature-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);}
.feature-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg);}
.feature-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-card:hover .thumb img{transform:scale(1.04);}
.feature-card .body{padding:24px 24px 26px;}
.feature-card h3{font-size:20px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.feature-card h3 .ic{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
}
.feature-card p{font-size:14.5px;color:var(--c-text);margin:0 0 14px;}
.feature-card .tip{
  font-size:13.5px;color:var(--c-muted);
  border-top:1px dashed var(--c-line);padding-top:12px;
}

/* ===== spec list (左标签右说明) ===== */
.spec-wrap{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
}
.spec-row{
  display:grid;grid-template-columns:210px 1fr;gap:20px;
  padding:20px 26px;border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:hover{background:#F8FBFF;}
.spec-label{
  display:flex;align-items:center;gap:9px;
  font-weight:700;color:var(--c-title);font-size:15.5px;
}
.spec-label i{color:var(--c-primary);font-size:14px;}
.spec-desc{font-size:15px;color:var(--c-text);margin:0;}
.spec-desc em{font-style:normal;color:var(--c-primary);font-weight:600;}

/* ===== compare ===== */
.compare{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.compare-col{
  border:1px solid var(--c-border);border-radius:var(--radius-card);
  background:var(--c-card);padding:26px;box-shadow:var(--shadow-card);
}
.compare-col.highlight{border-color:#BFD5EC;background:linear-gradient(180deg,#F6FAFE,#fff);}
.compare-col h3{font-size:19px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.compare-col ul li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.8px;padding:9px 0;border-bottom:1px dashed var(--c-line);
}
.compare-col ul li:last-child{border-bottom:0;}
.compare-col ul li i{color:var(--c-primary);margin-top:5px;font-size:13px;}
.compare-col ul li i.warn{color:var(--c-muted);}

/* ===== faq ===== */
.faq-box{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:8px 8px;
}
.faq-box .accordion-item{border:0;border-bottom:1px solid var(--c-line);}
.faq-box .accordion-item:last-child{border-bottom:0;}
.faq-box .accordion-button{
  background:transparent;font-size:15.5px;font-weight:700;color:var(--c-title);
  padding:20px 22px;box-shadow:none;line-height:1.6;
}
.faq-box .accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-primary-soft-2);}
.faq-box .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-box .accordion-button::after{
  width:16px;height:16px;background-size:16px;
  filter:invert(30%) sepia(60%) saturate(1200%) hue-rotate(180deg);
}
.faq-box .accordion-body{padding:4px 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text);}

/* ===== related links ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:block;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-card);padding:22px 22px 20px;
  box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:#C9DCF0;color:inherit;}
.rel-card h3{font-size:17.5px;margin:0 0 8px;color:var(--c-title);}
.rel-card p{margin:0;font-size:14px;color:var(--c-muted);}
.rel-card .go{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--c-primary);}

/* ===== cta ===== */
.cta-band{
  background:linear-gradient(120deg,#16599B,#0F3F72);
  border-radius:var(--radius-card);padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:0 16px 36px rgba(15,58,102,.22);
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,26px);margin:0 0 8px;}
.cta-band p{color:rgba(255,255,255,.84);margin:0;font-size:14.8px;}
.cta-band .btn-accent{flex-shrink:0;}

/* ===== footer ===== */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:0;}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:56px 0 44px;
}
.footer-brand p{font-size:14px;color:var(--c-muted);margin:16px 0 0;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:var(--c-title);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--c-text);}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text);margin-bottom:12px;}
.footer-contact i{color:var(--c-primary);margin-top:4px;}
.footer-bottom{background:var(--c-bg);border-top:1px solid var(--c-line);}
.footer-bottom .container{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;padding-bottom:16px;font-size:13px;color:var(--c-muted);
}

/* ===== responsive ===== */
@media (max-width:1199.98px){
  .nav-wrap{height:68px;gap:12px;}
  .nav-menu a{padding:0 10px;font-size:14.5px;}
  .section{padding:66px 0;}
}
@media (max-width:991.98px){
  .nav-wrap{height:60px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:fixed;top:0;right:-320px;bottom:0;width:300px;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:22px 18px 28px;margin:0;z-index:1040;
    box-shadow:-12px 0 30px rgba(15,23,42,.12);
    transition:right .3s ease;overflow-y:auto;
  }
  body.nav-open .nav-menu{right:0;}
  .nav-menu a{height:48px;padding:0 12px;font-size:15.5px;border-radius:10px;}
  .nav-menu a::after{display:none;}
  .nav-menu a.active{background:var(--c-primary-soft);}
  .nav-cta{display:none;}
  .nav-menu .drawer-cta{
    margin-top:14px;width:100%;justify-content:center;
    background:var(--c-primary);color:#fff;border-radius:var(--radius-btn);
  }
  .nav-menu .drawer-cta:hover{background:var(--c-primary-hover);color:#fff;}
  .grid-2{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 34px;}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left;}
  .hero-inner{padding:40px 30px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-sm{padding:40px 0;}
  .section-head{margin-bottom:26px;}
  .grid-2{grid-template-columns:1fr;gap:16px;}
  .compare{grid-template-columns:1fr;gap:16px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:18px 18px;}
  .rel-grid{grid-template-columns:1fr;}
  .hero-banner{min-height:220px;margin-top:16px;}
  .hero-inner{padding:30px 22px;}
  .cta-band{padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-main{grid-template-columns:1fr;gap:26px;}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:519.98px){
  .container{padding:0 16px;}
  .feature-card .body{padding:20px 18px 22px;}
  .lead-band{padding:18px;}
}