/* roulang page: index */
:root{
  --c-page:#f5f8fc;
  --c-card:#ffffff;
  --c-brand:#2f7fc9;
  --c-brand-deep:#1c405d;
  --c-brand-soft:#e9f3fa;
  --c-accent:#ed8b54;
  --c-text:#223544;
  --c-text-weak:#5a7184;
  --c-border:#d9e6f0;
  --c-line:#eef3f8;
  --c-success:#55a88c;
  --shadow-sm:0 6px 18px rgba(28,64,93,.07);
  --shadow-md:0 12px 28px rgba(28,64,93,.11);
  --radius-md:12px;
  --radius-lg:16px;
  --radius-pill:999px;
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.2,.75,.25,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  color:var(--c-text);
  background:var(--c-page);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:inline-block;vertical-align:middle}
a{color:var(--c-brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-brand-deep)}
ul,ol{margin:0;padding:0}
p{margin:0 0 1rem}
h1,h2,h3,h4,h5,h6{line-height:1.35;margin:0 0 .6rem;color:var(--c-brand-deep)}
h1{font-size:clamp(34px,6vw,50px);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,36px);font-weight:750}
h3{font-size:clamp(20px,3vw,25px);font-weight:700}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(47,127,201,.42);outline-offset:2px;border-radius:6px}

.row{max-width:1200px;margin-left:auto;margin-right:auto}
.row>.columns{padding-left:15px;padding-right:15px;float:left;width:100%}
.row>.columns:only-child{float:none}
.clearfix::before,.clearfix::after,.row::before,.row::after{content:"";display:table;clear:both}

@media screen and (min-width:38.75em){
  .row>.columns.medium-4{width:33.3333%}
  .row>.columns.medium-5{width:41.6667%}
  .row>.columns.medium-6{width:50%}
  .row>.columns.medium-7{width:58.3333%}
  .row>.columns.medium-8{width:66.6667%}
  .row>.columns.medium-12{width:100%}
}
@media screen and (min-width:64em){
  .row>.columns.large-4{width:33.3333%}
  .row>.columns.large-5{width:41.6667%}
  .row>.columns.large-6{width:50%}
  .row>.columns.large-7{width:58.3333%}
  .row>.columns.large-8{width:66.6667%}
  .row>.columns.large-9{width:75%}
  .row>.columns.large-12{width:100%}
}

.container-band{padding:88px 20px}
.section-head{margin-bottom:38px}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--c-brand);
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
}
.section-kicker::before{
  content:"";
  width:14px;height:14px;
  background:var(--c-brand-soft);
  border:2px solid var(--c-brand);
  border-radius:4px;
}
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border-radius:var(--radius-md);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  cursor:pointer;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-primary{
  background:var(--c-brand);
  color:#fff;
  box-shadow:0 8px 20px rgba(47,127,201,.22);
}
.btn-primary:hover{background:#25679f;color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,127,201,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{
  background:transparent;
  color:var(--c-brand-deep);
  border:1.5px solid var(--c-brand);
}
.btn-outline:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--c-brand-deep)}
.btn-white:hover{background:#e6f2fb;color:var(--c-brand-deep);transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}
.tag{
  display:inline-block;
  padding:4px 12px;
  background:var(--c-brand-soft);
  color:var(--c-brand);
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}
.badge-hollow{
  border:1px solid rgba(255,255,255,.6);
  color:#fff;
  border-radius:var(--radius-pill);
  padding:4px 14px;
  font-size:13px;
  background:rgba(44,93,132,.18);
}
.card{
  background:var(--c-card);
  border:1px solid #eaf1f6;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
}
.card-image{position:relative;overflow:hidden}
.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.card:hover .card-image img{transform:scale(1.04)}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:999;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-border);
  backdrop-filter:satin(140%);
}
.site-header::before{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg,#2f7fc9 45%,#75b3e2 55%,transparent);
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  min-height:76px;
  display:flex;
  align-items:center;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  margin-right:48px;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:11px;
  background:var(--c-brand-deep);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:800;
  box-shadow:0 8px 18px rgba(28,64,93,.2);
}
.brand-mark::after{
  content:attr(data-text);
}
.brand-name{
  font-size:20px;
  font-weight:800;
  color:var(--c-brand-deep);
  letter-spacing:.02em;
}
.site-nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex:1 1 auto;
  gap:24px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:26px;
  list-style:none;
  margin:0;
}
.nav-menu a,.nav-menu button{
  color:var(--c-text);
  font-size:15px;
  font-weight:600;
  line-height:76px;
  border-bottom:2px solid transparent;
  display:block;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-menu a:hover{color:var(--c-brand);border-color:var(--c-brand)}
.nav-menu .is-active a,
.nav-menu a.active{color:var(--c-brand);border-color:var(--c-brand)}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:8px;
}
.nav-login{
  font-size:14px;
  color:var(--c-brand-deep);
  font-weight:600;
}
.nav-login:hover{color:var(--c-brand)}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--c-brand);
  color:#fff!important;
  font-weight:700;
  padding:11px 18px;
  border-radius:var(--radius-md);
  line-height:1;
  box-shadow:0 6px 16px rgba(47,127,201,.22);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.nav-cta:hover{transform:translateY(-2px);background:#25679f}
.nav-toggle{
  width:44px;
  height:44px;
  border:1px solid var(--c-border);
  border-radius:var(--radius-md);
  display:none;
  margin-left:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  background:#fff;
}
.nav-toggle span{
  content:"";
  width:20px;
  height:2px;
  background:var(--c-brand-deep);
  border-radius:2px;
  transition:all .24s var(--ease);
}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{
  position:relative;
  overflow:hidden;
  padding:108px 0 112px;
  background:
    linear-gradient(104deg, rgba(232,244,251,.98) 0%, rgba(246,250,252,.92) 58%, rgba(255,255,255,.82) 100%),
    url(/assets/images/backpic/back-1.webp) center right / cover no-repeat;
}
.hero::before{
  content:"";
  position:absolute;
  right:-4%;top:12%;
  width:280px;height:280px;
  background:
    linear-gradient(45deg,#ffffff00 0 20%,#ffffff66 20% 21%,#ffffff00 21% 40%,#ffffff66 40% 41%,#ffffff00 41% 60%,#ffffff66 60% 61%,#ffffff00 61%);
  opacity:.6;
  transform:rotate(12deg);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  left:5%;bottom:-90px;width:260px;height:260px;
  background:radial-gradient(circle, rgba(47,127,201,.09), transparent 60%);
}
.hero-row{position:relative;z-index:1;align-items:center}
.hero-copy{padding:40px 18px 10px}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  font-weight:600;
  color:#fff;
  background:var(--c-brand);
  padding:6px 16px;
  border-radius:999px;
  box-shadow:0 6px 16px rgba(47,127,201,.2);
  margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:8px;height:8px;border-radius:100%;background:#fff}
.hero h1{color:var(--c-brand-deep);max-width:640px;margin-bottom:18px}
.hero h1 .brand-accent{color:var(--c-brand);position:relative;display:inline-block}
.hero-desc{
  max-width:570px;
  font-size:17px;
  color:var(--c-text-weak);
  margin:0 0 26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  list-style:none;
  max-width:570px;
}
.hero-trust li{
  position:relative;
  font-size:13px;
  color:var(--c-text-weak);
  padding:0 16px;
}
.hero-trust li::before{content:"✓";margin-right:4px;color:var(--c-success);font-weight:800}
.hero-trust li:not(:last-child)::after{content:"";position:absolute;right:0;top:5px;width:1px;height:14px;background:var(--c-border)}
.hero-art{position:relative;padding:20px 12px}
.hero-art .cover-wrap{
  border-radius:26px;
  overflow:hidden;
  box-shadow:0 24px 56px rgba(28,64,93,.15);
  border:6px solid rgba(255,255,255,.75);
  background:#fff;
}
.hero-art .cover-wrap img{
  width:100%;
  height:440px;
  object-fit:cover;
}
.hero-float{
  position:absolute;
  background:rgba(255,255,255,.95);
  border:1px solid #e8eff5;
  box-shadow:var(--shadow-md);
  border-radius:14px;
  padding:12px 18px;
  display:flex;
  align-items:center;
  gap:11px;
  animation:float-in 6s ease-in-out infinite alternate;
}
.float-a{top:5%;left:-6px}
.float-b{bottom:6%;right:-4px;animation-delay:-3s}
@keyframes float-in{
  0%{transform:translateY(-7px)}
  100%{transform:translateY(7px)}
}
.hero-float .float-dot{
  background:var(--c-success);
  width:9px;height:9px;
  border-radius:100%;
  box-shadow:0 0 0 6px rgba(85,168,140,.14);
  flex:0 0 auto;
}
.hero-float b{color:var(--c-brand-deep);font-size:14px;display:block;line-height:1.3}
.hero-float span{color:var(--c-text-weak);font-size:12px}

/* trust strip */
.trust-strip{
  background:#fff;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  transform:translateY(-50px);
  margin-bottom:-40px;
  position:relative;
  z-index:4;
  box-shadow:var(--shadow-sm);
  border-radius:0;
}
.trust-strip .row{padding:28px 10px}
.trust-item{
  text-align:center;
  padding:16px 10px;
  position:relative;
  min-height:100px;
}
.trust-item:not(:last-child)::after{
  content:"";position:absolute;
  right:0;top:26%;
  width:1px;height:48%;
  background:var(--c-line);
}
.trust-item strong{
  display:block;
  font-size:32px;
  color:var(--c-brand-deep);
  line-height:1.2;
}
.trust-item strong em{color:var(--c-accent);font-style:normal;font-size:.68em}
.trust-item small{color:var(--c-text-weak);font-size:14px;display:block;margin-top:5px}

/* steps section */
.steps-section{
  background:#fff;
  padding:112px 20px 90px;
}
.step-flow{position:relative}
.step-card{
  padding:32px 30px 34px;
  height:100%;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,#fbfdff, #fff);
  border:1px solid #eaf1f6;
  box-shadow:0 10px 28px rgba(28,64,93,.045);
  transition:all .24s var(--ease);
  position:relative;
}
.step-card::after{
  content:"";
  position:absolute;
  right:-13px;top:38px;
  width:26px;height:26px;
  border-top:2px solid var(--c-brand);
  border-right:2px solid var(--c-brand);
  transform:rotate(45deg);
  border-radius:2px;
  opacity:.35;
  background:#fff;
}
.row>.columns:last-child .step-card::after,
.row>.columns:only-child .step-card::after{display:none}
.step-card:hover{box-shadow:var(--shadow-md);border-color:#d1e3f0;transform:translateY(-5px)}
.step-num{
  font-size:14px;
  font-weight:800;
  color:var(--c-brand);
  background:var(--c-brand-soft);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:38px;height:38px;
  border-radius:12px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.step-card h3{font-size:20px;margin-bottom:10px}
.step-card p{color:var(--c-text-weak);font-size:15px;margin-bottom:18px}
.step-line{
  list-style:none;
  padding-left:0;
}
.step-line li{
  display:flex;
  gap:8px;
  font-size:14px;
  color:var(--c-text);
  line-height:1.7;
}
.step-line li::before{
  content:"·";
  color:var(--c-accent);
  font-weight:900;
  font-size:20px;
  line-height:1;
  transform:translateY(2px);
}

/* news / latest */
.latest-section{
  background:var(--c-page);
  padding:108px 20px;
  position:relative;
}
.section-topline{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:18px;
}
.link-more{
  font-size:15px;
  font-weight:600;
  color:var(--c-brand);
  display:inline-flex;
  align-items:center;
  gap:4px;
  border-bottom:2px solid transparent;
}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover{border-color:var(--c-brand)}
.link-more:hover::after{transform:translateX(4px)}
.news-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr;
  gap:28px;
  margin-top:36px;
}
@media screen and (max-width:880px){.news-grid{grid-template-columns:1fr}}
.news-card{
  display:block;
  width:100%;
  color:var(--c-text);
  overflow:hidden;
  height:100%;
  border-radius:var(--radius-lg);
  background:#fff;
  border:1px solid #eaf1f6;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);color:var(--c-brand-deep)}
.news-card__media{
  position:relative;
  height:230px;
  overflow:hidden;
  background:linear-gradient(135deg,#d9ebf6,#f2f8fd);
}
.news-card__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .45s var(--ease);
}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-media-badge{
  position:absolute;
  left:16px;top:16px;
}
.news-card__body{padding:24px 24px 20px}
.news-meta{
  display:flex;
  gap:14px;
  align-items:center;
  font-size:13px;
  color:var(--c-text-weak);
  margin:4px 0 10px;
}
.news-title{
  margin:0 0 10px;
}
.news-title h3{font-size:22px;margin:0}
.news-title h4{font-size:18px;margin:0}
.news-card__summary{
  color:var(--c-text-weak);
  font-size:14.5px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.news-cardfooter{
  display:flex;
  justify-content:space-between;
  align-items:center;
  border-top:1px solid var(--c-line);
  padding-top:14px;
  font-size:13px;
  color:var(--c-text-weak);
}
.news-subcol{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.news-line{
  display:flex;
  gap:18px;
  background:#fff;
  border:1px solid #eaf1f6;
  border-radius:var(--radius-lg);
  padding:16px;
  box-shadow:0 3px 12px rgba(28,64,93,.04);
  box-sizing:border-box;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
  color:var(--c-text);
}
.news-line:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-3px);
  color:var(--c-brand-deep);
}
.news-line__thumb{
  flex:0 0 96px;
  width:96px;height:96px;
  border-radius:12px;
  overflow:hidden;
  background:var(--c-brand-soft);
}
.news-line__thumb img{width:100%;height:100%;object-fit:cover}
.news-line__main{flex:1;min-width:0}
.news-line__title{
  font-size:16px;
  font-weight:700;
  color:var(--c-text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  line-height:1.5;
  margin:0 0 6px;
  transition:color .2s;
}
.news-line:hover .news-line__title{color:var(--c-brand)}
.news-line__sum{
  color:var(--c-text-weak);
  font-size:13px;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:7px;
}
.news-line__meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  color:var(--c-text-weak);
}
.news-empty{
  grid-column:1/-1;
  background:#fff;
  border:1px dashed var(--c-border);
  border-radius:var(--radius-lg);
  padding:84px 20px;
  text-align:center;
  color:var(--c-text-weak);
  min-height:260px;
}
.news-empty .empty-icon{
  width:68px;height:68px;
  background:var(--c-brand-soft);
  border-radius:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:30px;
  color:var(--c-brand);
  margin-bottom:14px;
}

/* showcase */
.showcase-section{
  background:#fff;
  padding:108px 20px;
}
.showcase-card{
  height:100%;
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid #eaf1f6;
  box-shadow:var(--shadow-sm);
  background:#fff;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.showcase-card:hover{box-shadow:var(--shadow-md);transform:translateY(-5px)}
.showcase-media{
  height:210px;
  overflow:hidden;
  background:var(--c-brand-soft);
}
.showcase-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.showcase-card:hover .showcase-media img{transform:scale(1.05)}
.showcase-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.showcase-desc{color:var(--c-text-weak);font-size:14.5px;margin:0 0 12px;flex:1}
.showcase-points{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:14px;
  color:var(--c-text);
}
.showcase-points li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:center;
  border-top:1px dashed var(--c-line);
  padding-top:8px;
}
.showcase-points strong{color:var(--c-brand-deep);font-size:15px;white-space:nowrap}
.showcase-points span{color:var(--c-text-weak);font-size:13.5px;text-align:right}

/* faq */
.faq-section{
  background:var(--c-page);
  padding:108px 20px;
}
.faq-section .section-kicker::before{
  border-radius:50%;
}
.faq-intro{
  max-width:440px;
  margin-bottom:30px;
  color:var(--c-text-weak);
}
.faq-list{
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid #eaf1f6;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.faq-item{
  border-bottom:1px solid var(--c-line);
}
.faq-item:last-child{border-bottom:none}
.faq-item__head{
  width:100%;
  padding:20px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:var(--c-brand-deep);
  font-size:17px;
  font-weight:650;
  gap:20px;
  background:#fff;
  transition:background .2s;
  text-align:left;
}
.faq-item__head span{flex:1}
.faq-item__head .faq-icon{
  width:26px;height:26px;
  flex:0 0 auto;
  border-radius:50%;
  border:1px solid var(--c-border);
  font-style:normal;
  color:var(--c-brand);
  background:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:600;
  font-size:19px;
  transition:background .2s,color .2s,transform .2s;
}
.faq-item__head:hover{background:#f8fbfe}
.faq-item__head .faq-icon::before{content:"+"}
.faq-item.is-active .faq-item__head{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.faq-item.is-active .faq-icon{
  background:var(--c-brand);
  color:#fff;
  border-color:var(--c-brand);
}
.faq-item.is-active .faq-icon::before{
  content:"−";
  font-size:18px;
}
.faq-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height .36s var(--ease);
  background:#fff;
}
.faq-panel-inner{
  padding:2px 24px 24px;
  color:var(--c-text-weak);
  font-size:15px;
  border-left:3px solid var(--c-brand);
  background:#fff;
}
.faq-item.is-active .faq-panel{max-height:450px}
.faq-item.is-active .faq-panel-inner{background:#fff;border-left-color:var(--c-brand)}

/* bottom cta */
.cta-band{
  background:var(--c-brand-deep);
  color:#fff;
  padding:88px 20px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-3%;top:-18%;
  width:320px;height:320px;
  background:
    linear-gradient(45deg, transparent 0 18%, rgba(255,255,255,.08) 18% 19%, transparent 19% 38%, rgba(255,255,255,.08) 38% 39%, transparent 39% 58%, rgba(255,255,255,.08) 58% 59%, transparent 59%);
  opacity:.7;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:6%;bottom:-20%;
  width:240px;
  height:240px;
  border:24px solid rgba(255,255,255,.05);
  border-radius:50%;
}
.cta-inner{
  position:relative;z-index:1;
  text-align:center;
  max-width:860px;
  margin:0 auto;
}
.cta-inner h2{
  color:#fff;
  font-size:clamp(28px,4vw,38px);
  font-weight:800;
  margin-bottom:14px;
}
.cta-inner > p{color:rgba(255,255,255,.75)}
.cta-actions{margin:34px 0 0;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-notes{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:30px;
  list-style:none;
  color:rgba(255,255,255,.65);
  font-size:14px;
}
.cta-notes li{display:flex;align-items:center;gap:7px}
.cta-notes li::before{content:"◆";color:var(--c-accent);font-size:10px}

/* footer */
.site-footer{
  background:#152f42;
  color:#b7c6d3;
  font-size:14px;
}
.footer-main{
  max-width:var(--container);
  margin:0 auto;
  padding:64px 20px 40px;
  display:grid;
  grid-template-columns:2fr 1.2fr 1.2fr 1.4fr;
  gap:42px;
}
.site-footer .brand-name{color:#fff}
.footer-desc{
  margin:18px 0;
  max-width:320px;
  color:#9dafbd;
}
.footer-cols h3{
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin:6px 0 20px;
}
.footer-cols ul{list-style:none}
.footer-cols li{margin-bottom:11px}
.footer-cols a{
  color:#b7c6d3;
  display:inline-flex;
  align-items:flex-start;
  gap:6px;
}
.footer-cols a::before{
  content:"›";
  color:var(--c-brand);
}
.footer-cols a:hover{color:#fff}
.footer-contact{
  list-style:none;
  margin-top:2px;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:9px;
  margin-bottom:12px;
}
.footer-contact i{
  background:rgba(255,255,255,.1);
  border-radius:7px;
  width:30px;height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-style:normal;
  font-size:13px;
  color:#fff;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 20px;
  text-align:center;
  font-size:13px;
  color:#7b93a4;
}

/* responsive */
@media (max-width:1024px){
  .container-band,.steps-section,.latest-section,.showcase-section,
  .faq-section,.cta-band{padding-top:72px;padding-bottom:72px}
  .header-inner{gap:12px}
  .brandname{font-size:18px}
  .header-inner{flex-wrap:wrap}
}
@media (max-width:820px){
  .site-header .header-inner{flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
  .site-header .brand{margin-right:auto}
  .nav-toggle{display:flex}
  .site-nav{
    display:none;
    flex-direction:column;
    align-items:stretch;
    width:100%;
    gap:6px;
    margin-top:8px;
    padding:14px 0 4px;
    border-top:1px solid var(--c-line);
  }
  .site-nav.is-open{display:flex}
  .nav-menu{flex-direction:column;gap:0;width:100%;align-items:stretch}
  .nav-menu a,.nav-menu button{line-height:48px;font-size:16px;border-bottom:1px solid var(--c-line)}
  .nav-actions{flex-direction:column;align-items:stretch;gap:10px;margin:12px 0 8px}
  .nav-actions .nav-cta,.nav-actions .nav-login{justify-content:center;width:100%;text-align:center}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:640px){
  .hero{padding:60px 0 70px}
  .hero h1{font-size:31px}
  .hero .hero-art{padding:10px}
  .hero-art .cover-wrap img{height:270px}
  .trust-item::after{display:none}
  .trust-item{padding:10px}
  .trust-item strong{font-size:25px}
  .footer-main{grid-template-columns:1fr}
  .cta-notes{flex-direction:column;gap:7px}
  .news-card__body{padding:20px}
  .news-line{gap:12px;padding:14px}
  .news-line__thumb{flex-basis:76px;width:76px;height:76px}
}

/* roulang page: category1 */
:root{
  --bg:#F5F9FC;
  --card:#FFFFFF;
  --primary:#2F7FC9;
  --primary-dark:#24659E;
  --deep:#1C405D;
  --accent:#ED8B54;
  --blue-soft:#E9F3FA;
  --line:#D9E6F0;
  --text:#223544;
  --muted:#5A7184;
  --green:#55A88C;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow:0 6px 18px rgba(28,64,93,.07);
  --shadow-lg:0 14px 30px rgba(28,64,93,.12);
  --transition:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0 0 16px;line-height:1.35;color:var(--text)}
h1{font-size:42px;font-weight:800;letter-spacing:-.01em}
h2{font-size:32px;font-weight:800;letter-spacing:-.01em}
h3{font-size:22px;font-weight:700}
time{display:inline-block}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 28px}
.row{max-width:1220px}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(28,64,93,.05);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:100%;
  height:3px;
  background:var(--primary);
  opacity:.85;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  max-width:1220px;
  margin:0 auto;
  padding:14px 28px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  background:var(--deep);
  color:#fff;
  font-weight:800;
  font-size:20px;
  border-radius:10px;
  box-shadow:0 4px 10px rgba(28,64,93,.18);
}
.brand-name{
  font-size:21px;
  font-weight:800;
  color:var(--text);
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:10px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:9px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:2px;
  background:var(--deep);
  border-radius:2px;
  transition:var(--transition);
}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.site-nav{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-menu a{
  display:inline-block;
  padding:9px 5px;
  font-size:15px;
  font-weight:600;
  color:#3B4C5C;
  position:relative;
  transition:color var(--transition);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:100%;
  bottom:3px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:right var(--transition);
}
.nav-menu a:hover{color:var(--primary)}
.nav-menu a:hover::after{right:0}
.nav-menu li.is-active a{color:var(--primary)}
.nav-menu li.is-active a::after{right:0}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:10px;
}
.nav-login{
  font-size:15px;
  font-weight:600;
  color:#4A5A68;
  padding:8px 2px;
  transition:color var(--transition);
}
.nav-login:hover{color:var(--primary)}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 22px;
  background:var(--primary);
  color:#fff;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  box-shadow:0 6px 14px rgba(47,127,201,.28);
  transition:var(--transition);
}
.nav-cta:hover{
  background:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:0 10px 20px rgba(47,127,201,.32);
  color:#fff;
}
.nav-cta:active{transform:translateY(0)}
.nav-cta span{font-size:18px;line-height:1}

/* page banner */
.page-banner{
  position:relative;
  overflow:hidden;
  padding:88px 0 82px;
  background:linear-gradient(135deg,#E7F2FA 0%,#F7FAFC 46%,#DCEBF5 100%);
}
.banner-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.banner-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(238,246,252,.92) 0%,rgba(244,249,252,.75) 60%,rgba(230,241,249,.6) 100%);
}
.page-banner-inner{
  position:relative;
  z-index:2;
  max-width:1240px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:14px;
}
.breadcrumb a{transition:color var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:#93A7B8}
.banner-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(47,127,201,.10);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:700;
  margin-bottom:18px;
}
.banner-kicker::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}
.page-banner h1{
  font-size:48px;
  color:var(--deep);
  margin-bottom:14px;
}
.banner-summary{
  max-width:620px;
  font-size:17px;
  color:#486070;
  margin-bottom:34px;
  line-height:1.8;
}
.banner-actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:48px;
  padding:0 28px;
  border-radius:10px;
  font-size:16px;
  font-weight:700;
  border:1px solid transparent;
  transition:var(--transition);
  cursor:pointer;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(47,127,201,.28);
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(47,127,201,.34);
  color:#fff;
}
.btn-secondary{
  background:#fff;
  border-color:#C4D8E8;
  color:var(--primary-dark);
}
.btn-secondary:hover{
  border-color:var(--primary);
  background:var(--blue-soft);
  transform:translateY(-2px);
  box-shadow:0 8px 16px rgba(28,64,93,.08);
}
.btn-arrow{font-size:19px;line-height:1}

/* metrics band */
.metrics-band{
  padding:0 28px;
  margin-top:-42px;
  position:relative;
  z-index:5;
}
.metrics-card{
  max-width:1000px;
  margin:0 auto;
  background:#fff;
  border-radius:18px;
  box-shadow:var(--shadow-lg);
  padding:34px 30px 22px;
  border:1px solid rgba(217,230,240,.7);
  display:flex;
  flex-wrap:wrap;
}
.metric-item{
  text-align:center;
  padding:12px 16px 24px;
}
.metric-item strong{
  display:block;
  font-size:34px;
  color:var(--deep);
  font-weight:800;
  line-height:1.3;
}
.metric-item span{
  color:var(--muted);
  font-size:13px;
}

/* section frames */
.section{
  padding:88px 0;
}
.section-head{
  margin-bottom:48px;
}
.section-head.center{
  max-width:700px;
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-head.split{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:28px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-block;
  color:var(--primary);
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:10px;
}
.section-head h2{
  color:var(--deep);
}
.section-head p{
  color:var(--muted);
  margin-top:12px;
}

/* timeline */
.timeline-section{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.timeline{
  position:relative;
  max-width:860px;
  margin:0 auto;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:8px;
  top:10px;
  bottom:8px;
  width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,#C8DDEB 100%);
  border-radius:2px;
}
.timeline-item{
  position:relative;
  padding:0 0 42px 26px;
}
.timeline-item:last-child{
  padding-bottom:6px;
}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-29px;
  top:6px;
  width:17px;
  height:17px;
  background:#fff;
  border:4px solid var(--primary);
  border-radius:50%;
  box-shadow:0 0 0 5px rgba(47,127,201,.12);
  box-sizing:border-box;
}
.timeline-item:last-child::before{
  border-color:var(--accent);
  box-shadow:0 0 0 5px rgba(237,139,84,.15);
}
.timeline-time{
  display:inline-block;
  padding:4px 12px;
  background:var(--blue-soft);
  color:var(--primary-dark);
  border-radius:6px;
  font-size:14px;
  font-weight:700;
  margin-bottom:8px;
}
.timeline-item h3{
  font-size:20px;
  color:var(--deep);
  margin-bottom:8px;
}
.timeline-item p{
  color:var(--muted);
  font-size:15px;
  max-width:640px;
}

/* updates section */
.updates-section{
  background:var(--bg);
}
.grid-card{
  background:#fff;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.grid-card:hover{
  box-shadow:var(--shadow-lg);
  transform:translateY(-4px);
}
.card-image{
  overflow:hidden;
}
.card-image img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.update-feature{
  display:flex;
}
.update-feature .card-image{
  width:46%;
  flex-shrink:0;
}
.update-feature .card-content{
  padding:30px 30px 26px;
}
.meta-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-bottom:16px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  background:var(--blue-soft);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:700;
}
.tag.orange{
  background:rgba(237,139,84,.12);
  color:#C4672B;
}
.card-content h3{
  font-size:23px;
  line-height:1.45;
  margin-bottom:12px;
  color:var(--deep);
}
.card-content h3 a{
  transition:color var(--transition);
}
.card-content h3 a:hover{
  color:var(--primary);
}
.card-content p{
  color:var(--muted);
  font-size:15px;
  margin-bottom:22px;
}
.text-link{
  color:var(--primary);
  font-weight:700;
  font-size:14px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap var(--transition);
}
.text-link:hover{
  color:var(--primary-dark);
  gap:10px;
}
.list-cards{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.list-card{
  background:#fff;
  border-radius:14px;
  padding:22px 24px;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition),transform var(--transition);
  display:flex;
  gap:20px;
}
.list-card:hover{
  box-shadow:var(--shadow-lg);
  transform:translateY(-2px);
}
.list-cover{
  width:88px;
  height:88px;
  border-radius:12px;
  object-fit:cover;
  flex-shrink:0;
}
.list-content{
  flex:1;
  min-width:0;
}
.list-content .meta-row{
  margin-bottom:8px;
}
.list-content h3{
  font-size:18px;
  margin-bottom:6px;
  line-height:1.5;
}
.list-content h3 a:hover{
  color:var(--primary);
}
.list-content p{
  font-size:14px;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:8px;
}
.list-content time{
  font-size:13px;
  color:#8A9AA8;
}
.update-note{
  margin-top:24px;
  padding:16px 20px;
  background:rgba(85,168,140,.10);
  border-left:4px solid var(--green);
  border-radius:10px;
  color:var(--deep);
  font-size:15px;
}
.update-note strong{
  color:var(--primary-dark);
}

/* improve section */
.tools-section{
  background:linear-gradient(180deg,#fff 0%,#F0F6FB 100%);
}
.feature-row{
  display:flex;
  align-items:center;
  gap:64px;
  background:#fff;
  border-radius:20px;
  padding:28px;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  margin-bottom:28px;
}
.feature-row.reverse{
  flex-direction:row-reverse;
}
.feature-media{
  width:43%;
  border-radius:14px;
  overflow:hidden;
  box-shadow:0 10px 24px rgba(28,64,93,.08);
}
.feature-media img{
  width:100%;
  height:340px;
  object-fit:cover;
}
.feature-copy{
  flex:1;
}
.feature-copy .tag{
  margin-bottom:16px;
}
.feature-copy h3{
  font-size:28px;
  color:var(--deep);
  line-height:1.4;
  margin-bottom:16px;
}
.feature-copy p{
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
}
.feature-list{
  margin-top:18px;
}
.feature-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:7px 0;
  color:var(--text);
  font-size:15px;
}
.feature-list li::before{
  content:"";
  flex-shrink:0;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-top:10px;
}

/* faq section */
.faq-section{
  background:var(--bg);
}
.faq-intro{
  padding-right:40px;
}
.faq-intro h2{
  color:var(--deep);
}
.faq-intro p{
  color:var(--muted);
  margin-top:12px;
}
.faq-contact-card{
  margin-top:24px;
  padding:22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
}
.faq-contact-card strong{
  display:block;
  color:var(--deep);
  font-size:16px;
  margin-bottom:8px;
}
.faq-contact-card p{
  font-size:14px;
  margin:0;
  color:var(--muted);
}
.accordion{
  background:transparent;
}
.accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--transition);
}
.accordion-item.is-active{
  box-shadow:0 8px 20px rgba(28,64,93,.08);
  border-color:#C7DBEB;
}
.accordion-title{
  background:#fff;
  border:0;
  color:var(--deep);
  font-size:17px;
  font-weight:700;
  padding:22px 56px 22px 24px;
  border-radius:14px;
  position:relative;
  line-height:1.5;
  transition:background var(--transition),color var(--transition);
}
.accordion-title:hover{
  background:var(--blue-soft);
  color:var(--primary-dark);
}
.accordion-item.is-active .accordion-title{
  background:var(--blue-soft);
  color:var(--primary-dark);
}
.accordion-title::after{
  content:"";
  position:absolute;
  right:24px;
  top:26px;
  width:9px;
  height:9px;
  border-right:2px solid var(--primary);
  border-bottom:2px solid var(--primary);
  transform:rotate(45deg);
  transition:var(--transition);
}
.accordion-item.is-active .accordion-title::after{
  transform:rotate(225deg);
  top:34px;
}
.accordion-content{
  background:var(--blue-soft);
  color:var(--muted);
  padding:18px 24px 24px;
  border:0;
  font-size:15px;
  line-height:1.85;
}
.accordion-content p{
  margin-bottom:0;
}

/* cta band */
.cta-band{
  position:relative;
  background:var(--deep);
  padding:78px 0;
  overflow:hidden;
}
.cta-band::before,
.cta-band::after{
  content:"";
  position:absolute;
  width:150px;
  height:150px;
  border:12px solid rgba(255,255,255,.06);
}
.cta-band::before{
  top:-50px;
  right:6%;
  border-radius:22px;
  transform:rotate(16deg);
}
.cta-band::after{
  bottom:-60px;
  left:4%;
  border-radius:28px;
  transform:rotate(45deg);
  border-color:rgba(237,139,84,.16);
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:860px;
  margin:0 auto;
  text-align:center;
  color:#fff;
}
.cta-inner .eyebrow{
  color:#91C9F2;
}
.cta-inner h2{
  color:#fff;
  font-size:36px;
  line-height:1.35;
  margin-bottom:14px;
}
.cta-inner p{
  color:rgba(255,255,255,.82);
  font-size:16px;
  margin-bottom:30px;
}
.cta-buttons{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
}
.btn-light{
  background:#fff;
  color:var(--deep);
}
.btn-light:hover{
  background:#E7F2FA;
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(255,255,255,.15);
}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.55);
  color:#fff;
}
.btn-ghost:hover{
  background:rgba(255,255,255,.1);
  border-color:#fff;
  transform:translateY(-2px);
}
.cta-note{
  margin-top:24px;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px 30px;
  color:rgba(255,255,255,.65);
  font-size:14px;
}
.cta-note i{
  font-style:normal;
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.cta-note i::before{
  content:"";
  width:5px;
  height:5px;
  background:var(--green);
  border-radius:50%;
  display:inline-block;
}

/* footer */
.site-footer{
  background:#152D3F;
  color:rgba(255,255,255,.76);
}
.footer-main{
  max-width:1220px;
  margin:0 auto;
  padding:62px 28px 38px;
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:44px;
}
.footer-main .brand .brand-name{
  color:#fff;
  font-size:21px;
}
.footer-desc{
  margin-top:18px;
  max-width:360px;
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
}
.footer-cols h3{
  color:#fff;
  font-size:16px;
  font-weight:700;
  margin-bottom:20px;
}
.footer-cols ul li{
  margin-bottom:11px;
}
.footer-cols a{
  color:rgba(255,255,255,.68);
  font-size:14px;
  transition:color var(--transition);
}
.footer-cols a:hover{
  color:#fff;
  padding-left:3px;
}
.footer-contact li{
  display:flex;
  gap:8px;
  align-items:flex-start;
  margin-bottom:12px;
  font-size:14px;
}
.footer-contact i{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:20px;
  height:20px;
  margin-top:3px;
  font-style:normal;
  border-radius:5px;
  background:rgba(255,255,255,.1);
  color:#91C9F2;
  font-size:11px;
  font-weight:800;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  text-align:center;
  padding:22px 16px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* responsive */
@media screen and (max-width:1024px){
  h1{font-size:38px}
  h2{font-size:28px}
  .section{padding:70px 0}
  .metrics-card{
    max-width:90%;
  }
  .update-feature{
    flex-direction:column;
  }
  .update-feature .card-image{
    width:100%;
  }
  .update-feature .card-image img{
    height:260px;
  }
  .list-cover{
    width:74px;
    height:74px;
  }
  .feature-row{
    flex-direction:column;
    gap:24px;
  }
  .feature-row.reverse{
    flex-direction:column;
  }
  .feature-media{
    width:100%;
  }
  .feature-media img{
    height:300px;
  }
  .faq-intro{
    padding-right:0;
  }
  .footer-main{
    grid-template-columns:1fr 1fr;
  }
}
@media screen and (max-width:920px){
  .site-nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
  }
  .site-nav.is-open{
    display:flex;
    padding:8px 0 18px;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .nav-menu{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }
  .nav-menu li{
    border-bottom:1px solid #EAF1F6;
  }
  .nav-menu a{
    padding:14px 4px;
    font-size:16px;
  }
  .nav-menu a::after{
    display:none;
  }
  .nav-actions{
    flex-direction:column;
    gap:12px;
    margin-top:12px;
  }
  .nav-login{
    text-align:center;
    padding:6px;
  }
  .nav-cta{
    justify-content:center;
    width:100%;
  }
  .page-banner{
    padding:66px 0 72px;
  }
  .metric-item{
    padding:8px 8px 20px;
  }
  .metric-item strong{
    font-size:30px;
  }
  .timeline{
    max-width:100%;
  }
}
@media screen and (max-width:640px){
  .header-inner{
    padding:12px 18px;
  }
  .container{
    padding:0 18px;
  }
  body{
    font-size:15px;
  }
  h1{
    font-size:32px;
  }
  h2{
    font-size:26px;
  }
  .banner-summary{
    font-size:15px;
  }
  .page-banner h1{
    font-size:36px;
  }
  .section{
    padding:54px 0;
  }
  .metrics-card{
    margin-top:-30px;
    padding:22px 16px 6px;
  }
  .metric-item strong{
    font-size:26px;
  }
  .update-feature .card-content{
    padding:22px 20px;
  }
  .card-content h3{
    font-size:20px;
  }
  .list-card{
    flex-direction:column;
    padding:16px;
  }
  .list-cover{
    width:100%;
    height:140px;
  }
  .list-content p{
    -webkit-line-clamp:3;
  }
  .timeline{
    padding-left:26px;
  }
  .timeline-item{
    padding-left:18px;
  }
  .timeline-item::before{
    left:-24px;
  }
  .feature-row{
    padding:18px;
  }
  .feature-media img{
    height:210px;
  }
  .cta-inner h2{
    font-size:28px;
  }
  .banner-actions .btn{
    width:100%;
  }
  .cta-buttons .btn{
    width:100%;
  }
  .footer-main{
    grid-template-columns:1fr;
    padding:46px 22px 26px;
    gap:35px;
  }
  .footer-cols h3{
    margin-bottom:14px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #2F7FC9;
  --primary-hover: #286ba8;
  --primary-weak: #E9F3FA;
  --deep: #1C405D;
  --deep-soft: #2c5470;
  --accent: #ED8B54;
  --bg: #F6F9FC;
  --card-bg: #FFFFFF;
  --line: #D9E6F0;
  --text: #223544;
  --text-sub: #5A7184;
  --text-light: #8ca3b5;
  --green: #55A88C;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 18px rgba(28,64,93,0.07);
  --shadow-hover: 0 12px 24px rgba(28,64,93,0.12);
  --space-section: 90px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
}

/* 背景图工具 */
.has-bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.has-bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(246, 249, 252, 0.92);
  z-index: 1;
}

.has-bg>* {
  position: relative;
  z-index: 2;
}

/* ---------- 顶部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1000;
  background: rgba(246, 249, 252, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(28, 64, 93, 0.06);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: #fff;
  font-weight: 700;
}

.brand-name {
  font-size: 20px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--deep);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

@media screen and (max-width: 639px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
  }

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

  .brand-mark {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  cursor: pointer;
  transition: border-color 0.25s ease;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--deep);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--primary);
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media screen and (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  position: relative;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.nav-menu a::after {
  content: "";
  display: block;
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  border-radius: 0 2px 2px;
  background: var(--primary);
  transition: width 0.25s ease;
}

.nav-menu a:hover {
  color: var(--primary);
  background: rgba(47, 127, 201, 0.08);
}

.nav-menu a:hover::after {
  width: 60%;
}

.nav-menu a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  color: var(--primary);
}

.nav-menu li.is-active a {
  color: var(--primary);
  font-weight: 600;
}

.nav-menu li.is-active a::after {
  width: 60%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.nav-login {
  display: inline-flex;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--deep);
  background: transparent;
  padding: 10px 14px;
  border-radius: 10px;
  transition: color 0.25s ease, background-color 0.25s ease;
}

.nav-login:hover {
  color: var(--primary);
  background: var(--primary-weak);
}

.nav-login:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 12px rgba(47, 127, 201, 0.22);
}

.nav-cta i {
  font-size: 14px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(47, 127, 201, 0.28);
}

.nav-cta:hover i {
  transform: translateX(4px);
}

.nav-cta:focus-visible {
  outline: 3px solid rgba(47, 127, 201, 0.35);
  outline-offset: 2px;
}

.nav-cta:active {
  transform: translateY(0px);
  box-shadow: 0 2px 6px rgba(47, 127, 201, 0.2);
}

@media screen and (max-width: 900px) {
  .site-nav {
    position: fixed;
    top: 60px;
    right: 0;
    width: 100%;
    max-height: calc(100vh - 60px);
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 16px 16px 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 28px rgba(28, 64, 93, 0.1);
    overflow-y: auto;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease, visibility 0.25s ease;
    z-index: -1;
    left: 0;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    z-index: 1000;
  }

  .header-inner {
    position: relative;
  }

  .site-nav,
  .site-nav .nav-menu {
    display: flex;
    width: 100%;
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-bottom: 8px;
  }

  .nav-menu a {
    padding: 12px 16px;
    justify-content: flex-start;
    font-size: 15px;
    border-radius: 10px;
  }

  .nav-menu a::after {
    left: 0;
    transform: none;
    width: 0;
    height: 12px;
    top: 50%;
    margin-top: -6px;
    border-radius: 0;
  }

  .nav-menu a:hover::after,
  .nav-menu li.is-active a::after {
    width: 4px;
  }

  .nav-actions {
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }

  .nav-cta,
  .nav-login {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
    display: flex;
  }
}

@media screen and (min-width: 901px) and (max-width: 1180px) {
  .header-inner {
    padding: 0 16px;
  }

  .site-nav {
    gap: 10px;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-menu a {
    padding: 8px 10px;
    font-size: 15px;
  }
}

/* ---------- 页面主体 ---------- */
.page-main {
  background: var(--bg);
}

.section-page-hero {
  background: var(--primary-weak);
  padding: 70px 0 40px;
  position: relative;
  overflow: hidden;
}

.section-page-hero.has-bg {
  background-image: linear-gradient(120deg, #e5f0fa 0%, #f3f8fc 60%, #e2ecf5 100%);
}

.section-page-hero.has-bg::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -50px;
  width: 280px;
  height: 280px;
  background-image: linear-gradient(145deg, rgba(255, 255, 255, 0.5) 25%, transparent 25%), linear-gradient(145deg, transparent 75%, rgba(255, 255, 255, 0.3) 75%);
  background-size: 22px 22px;
  background-position: 0 0, 11px 11px;
  opacity: 0.6;
  z-index: 1;
  border-radius: 24px;
}

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 28px;
}

.hero-breadcrumb a {
  color: var(--primary);
}

.hero-breadcrumb a:hover {
  color: var(--deep);
}

.hero-breadcrumb i {
  font-size: 12px;
  color: var(--text-light);
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-copy {
  flex: 1 1 520px;
  min-width: 320px;
}

.page-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(47, 127, 201, 0.12);
  padding: 6px 16px;
  border-radius: 30px;
}

.page-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.hero-copy h1 {
  font-size: 36px;
  margin: 22px 0 14px;
  font-weight: 800;
  color: var(--deep);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.hero-copy h1 .highlight {
  color: var(--primary);
  position: relative;
}

.hero-copy h1 .highlight::after {
  content: "";
  position: absolute;
  right: 0;
  left: 0;
  bottom: 4px;
  height: 8px;
  background: rgba(47, 127, 201, 0.1);
  border-radius: 4px;
  z-index: -1;
}

.hero-copy p {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 20px;
}

.hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text);
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 6px 14px;
}

.hero-badge i {
  color: var(--green);
  font-size: 13px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 12px 28px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  text-align: center;
  line-height: 1.4;
}

.btn-lg {
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 16px;
}

.btn-fill {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(47, 127, 201, 0.25);
}

.btn-fill:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(47, 127, 201, 0.32);
}

.btn-fill i {
  transition: transform 0.25s ease;
}

.btn-fill:hover i {
  transform: translateX(4px);
}

.btn-outline {
  background: #fff;
  border: 2px solid var(--line);
  color: var(--deep);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-outline i {
  color: var(--accent);
}

.btn:focus-visible,
.btn-lg:focus-visible {
  outline: 3px solid rgba(47, 127, 201, 0.3);
  outline-offset: 3px;
}

.hero-side {
  flex: 1 1 320px;
  min-width: 280px;
  position: relative;
}

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 18px 36px rgba(28, 64, 93, 0.18);
  background: var(--card-bg);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media screen and (max-width: 1080px) {
  .hero-copy h1 {
    font-size: 32px;
  }
}

@media screen and (max-width: 900px) {
  .section-page-hero {
    padding-top: 50px;
  }

  .hero-grid {
    flex-direction: column-reverse;
  }

  .hero-side {
    width: 100%;
    text-align: center;
  }

  .hero-image {
    max-width: 620px;
    margin: 0 auto;
  }

  .hero-copy h1 {
    font-size: 30px;
  }
}

@media screen and (max-width: 567px) {
  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-copy p {
    font-size: 15px;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

/* ---------- 运营步骤 ---------- */
.section-steps {
  padding: 72px 0 34px;
}

.section-head {
  margin-bottom: 48px;
}

.section-head .section-intro {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.section-head h2 {
  margin-top: 14px;
  font-size: 28px;
  color: var(--deep);
  font-weight: 700;
  letter-spacing: -0.02em;
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.section-head h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 52px;
  height: 4px;
  border-radius: 4px;
  background: var(--primary);
}

.section-head p {
  margin-top: 16px;
  font-size: 15px;
  color: var(--text-sub);
  max-width: 420px;
}

.step-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
  margin: 0 -12px;
}

.step-col {
  flex: 1 1 0;
  min-width: 260px;
  padding: 0 12px;
}

.step-card {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 26px 26px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(217, 230, 240, 0.55);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

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

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary);
  font-size: 22px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 20px;
  box-shadow: 0 6px 14px rgba(47, 127, 201, 0.2);
}

.step-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 12px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

.step-card .step-tags {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.step-card .step-tag {
  background: var(--primary-weak);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
}

/* 步骤箭头（替代重复装饰） */
@media screen and (min-width: 1024px) {
  .step-col:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 22px;
    color: var(--accent);
    font-weight: 700;
    z-index: 2;
  }

  .step-flow .step-col::after {
    display: none;
  }
}

/* 步骤中底部按钮 */
@media screen and (max-width: 567px) {
  .section-steps {
    padding-top: 52px;
  }

  .step-cards {
    gap: 24px;
  }
}

/* ---------- 运营能力板块 ---------- */
.section-features {
  padding: var(--space-section) 0;
  background: var(--bg);
}

.section-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
}

.section-columns>.section-aside {
  flex: 0 0 160px;
}

.section-columns>.section-content {
  flex: 1 1 0;
}

.section-content .h2-lg {
  font-size: 30px;
  line-height: 1.3;
  color: var(--deep);
  margin-bottom: 14px;
  font-weight: 700;
}

.section-content .lead-text {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 640px;
}

.media-card-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.media-card {
  flex: 1 1 0;
  min-width: 280px;
  margin-bottom: 8px;
}

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

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

.media-image {
  display: block;
  aspect-ratio: 16 / 7;
  overflow: hidden;
}

.media-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.media-card-inner:hover .media-image img {
  transform: scale(1.04);
}

.media-body {
  padding: 24px 22px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.media-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
  line-height: 1.5;
}

.media-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  flex: 1;
}

.media-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 16px;
  color: var(--text-light);
}

.media-meta i {
  color: var(--primary);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

.btn-link i {
  font-size: 13px;
  transition: transform 0.2s ease;
}

.btn-link:hover {
  color: var(--deep);
}

.btn-link:hover i {
  transform: translateX(4px);
}

@media screen and (max-width: 980px) {
  .section-columns {
    flex-direction: column;
  }

  .section-columns>.section-aside {
    flex-basis: auto;
  }

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

/* ---------- 运营内容卡片区 ---------- */
.section-operations {
  padding: 24px 0 66px;
  background: var(--card-bg);
  box-shadow: 0 6px 34px rgba(28, 64, 93, 0.05);
}

.op-center-intro {
  background: linear-gradient(135deg, #eef7fd 0%, #f4fafc 100%);
  border-radius: 24px;
  padding: 40px 36px;
  margin: 56px 0 42px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(47, 127, 201, 0.15);
  position: relative;
  overflow: hidden;
}

.op-center-intro::before {
  content: "";
  position: absolute;
  top: -40px;
  left: -40px;
  width: 140px;
  height: 140px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  z-index: 1;
}

.op-center-intro h3 {
  font-size: 22px;
  color: var(--deep);
  margin-bottom: 8px;
  position: relative;
  z-index: 2;
}

.op-center-intro p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 680px;
  position: relative;
  z-index: 2;
}

.op-center-intro .btn {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  margin-top: 12px;
}

.operation-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.op-item {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.op-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.op-icon {
  font-size: 24px;
  color: var(--primary);
  display: block;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-weak);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.op-item h4 {
  font-weight: 700;
  font-size: 17px;
  color: var(--deep);
  margin-bottom: 8px;
}

.op-item p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
}

@media screen and (max-width: 900px) {
  .operation-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 567px) {
  .operation-list {
    grid-template-columns: 1fr;
  }
}

/* ---------- 双栏图文模块（运营指南特有）---------- */
.section-guide-split {
  padding: 80px 0;
  background: var(--bg);
}

.split-grid {
  display: flex;
  align-items: center;
  gap: 52px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.split-flex--reverse .split-copy {
  order: 0;
}

.split-flex--reverse .split-image {
  order: 1;
}

.split-image {
  flex: 1 1 400px;
  min-width: 280px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.split-image img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.split-copy {
  flex: 1 1 460px;
  min-width: 320px;
}

.split-copy h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--deep);
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.split-copy h2 span {
  color: var(--primary);
}

.split-copy>p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.split-quality {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.split-quality li {
  position: relative;
  padding: 6px 0 6px 24px;
  font-size: 15px;
  color: var(--text);
}

.split-quality li::before {
  content: "\f058";
  font-family: "Font Awesome 6 Free";
  font-weight: 400;
  position: absolute;
  left: 0;
  top: 7px;
  color: var(--green);
  font-size: 17px;
}

@media screen and (max-width: 860px) {
  .split-flex--reverse .split-image {
    order: 0;
  }

  .split-copy {
    min-width: 100%;
  }

  .split-image {
    min-width: 100%;
  }
}

/* ---------- 图文时间轴 ---------- */
.section-timeline {
  background: #ffffff;
  padding: 80px 0;
}

.timeline {
  position: relative;
  padding: 40px 0 40px;
}

.timeline-item {
  position: relative;
  padding-left: 36px;
  margin-bottom: 30px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.timeline-item::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: 8px;
  box-shadow: 0 0 0 4px rgba(47, 127, 201, 0.12);
}

.timeline-date {
  flex: 0 0 120px;
  font-weight: 700;
  color: var(--primary);
  font-size: 18px;
  padding-top: 2px;
  letter-spacing: 0;
}

.timeline-content {
  flex: 1 1 400px;
  background: var(--bg);
  border-radius: 14px;
  padding: 22px 24px;
  border-left: 4px solid var(--accent);
}

.timeline-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 0;
}

@media screen and (max-width: 620px) {
  .timeline-date {
    flex: 0 0 90px;
    font-size: 16px;
  }
}

/* ---------- 运营问答 ---------- */
.section-faq {
  padding: var(--space-section) 0;
  background: var(--bg);
}

.section-head-qa {
  margin-bottom: 42px;
}

.section-head-qa h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.section-head-qa h2::after {
  content: "";
  width: 4px;
  height: 30px;
  background: var(--primary);
  border-radius: 3px;
}

.section-head-qa p {
  margin-top: 12px;
  color: var(--text-sub);
}

.qa-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
}

.qa-aside {
  flex: 0 1 260px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.qa-aside .qa-icon-block {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 20px;
  box-shadow: var(--shadow);
}

.qa-icon-block i {
  font-size: 30px;
  color: var(--primary);
  background: var(--primary-weak);
  border-radius: 50%;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.qa-icon-block h3 {
  font-size: 16px;
  color: var(--deep);
  margin-bottom: 6px;
}

.qa-icon-block p {
  color: var(--text-sub);
  font-size: 14px;
}

.qa-accordion {
  flex: 1 1 420px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.qa-accordion details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 22px;
  box-shadow: 0 2px 8px rgba(28, 64, 93, 0.02);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.qa-accordion details[open] {
  background: #fff;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
}

.qa-accordion summary {
  font-weight: 700;
  font-size: 17px;
  color: var(--deep);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  transition: color 0.3s ease;
}

.qa-accordion summary::-webkit-details-marker {
  display: none;
}

.qa-accordion summary i {
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 0.3s ease, color 0.3s ease;
}

.qa-accordion details[open] summary i {
  transform: rotate(135deg);
  color: var(--accent);
}

.qa-accordion .detail-answer {
  padding-top: 12px;
  margin-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
}

@media screen and (max-width: 760px) {
  .section-faq {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .qa-aside {
    min-width: 100%;
  }
}

/* ---------- CTA 转化 ---------- */
.section-final-cta {
  background: var(--deep);
  padding: 64px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.section-final-cta::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 260px;
  background-image: linear-gradient(to top, transparent 0, rgba(255, 255, 255, 0.03) 100%);
  border-radius: 0;
  transform: skewX(-15deg);
  transform-origin: bottom right;
  z-index: 1;
  pointer-events: none;
}

.section-final-cta::after {
  content: "";
  position: absolute;
  left: 36px;
  bottom: 24px;
  width: 54px;
  height: 54px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  transform: rotate(12deg);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.cta-copy h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-copy.text-big h2 {
  font-size: 24px;
  max-width: 260px;
}

.cta-copy span {
  color: var(--accent);
}

.cta-copy p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  margin: 0;
}

.cta-actions {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  flex-wrap: wrap;
  justify-content: center;
}

.cta-note {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: #d98043;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(237, 139, 84, 0.25);
}

.btn-white {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-white:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

@media screen and (max-width: 780px) {
  .cta-inner {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .section-final-cta .cta-actions {
    width: 100%;
    justify-content: center;
  }
}

@media screen and (max-width: 520px) {
  .section-final-cta {
    padding: 48px 0;
  }

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

  .cta-note {
    justify-content: center;
  }
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #162C3D;
  color: rgba(255, 255, 255, 0.85);
  padding: 66px 0 24px;
  position: relative;
  z-index: 2;
}

.footer-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 46px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.footer-main .footer-brand-area {
  flex: 1 1 320px;
  min-width: 260px;
}

.site-footer .brand-name {
  color: #ffffff;
}

.footer-desc {
  margin: 18px 0 24px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.61);
}

.footer-cols {
  flex: 1 1 160px;
  min-width: 150px;
}

.footer-cols h3 {
  color: #ffffff;
  font-size: 18px;
  margin-bottom: 18px;
  font-weight: 600;
}

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

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

.footer-cols a {
  color: rgba(255, 255, 255, 0.63);
  font-size: 14px;
  transition: color 0.25s ease, padding-left 0.25s ease;
  position: relative;
}

.footer-cols a:hover {
  color: #ffffff;
  padding-left: 16px;
}

.footer-cols a:hover::before {
  content: "·";
  position: absolute;
  left: 5px;
  color: var(--accent);
  font-weight: 700;
}

.footer-cols a:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 12px;
  color: rgba(255, 255, 255, 0.63);
  font-size: 14px;
}

.footer-contact i {
  width: 20px;
  color: var(--accent);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0px auto;
  padding: 22px 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.43);
  right: 0;
  left: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom-legal-flags {
  color: rgba(255, 255, 255, 0.33);
}

@media screen and (max-width: 900px) {
  .footer-bottom {
    gap: 6px;
  }
}

@media screen and (max-width: 567px) {
  .site-footer {
    padding-top: 40px;
  }
}

/* --------- 结构化空间 --------- */
.px-0 {
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.py-1 {
  padding-top: 10px;
  padding-bottom: 10px;
}

.section-sub-note {
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
  margin-top: 28px;
}

/* 网格容器使用 Foundation */
.row {
  max-width: 1280px;
}

.foundation-grid-example .columns {
  margin-bottom: 28px;
}

@media screen and (max-width: 900px) {
  :root {
    --space-section: 60px;
  }
}

@media screen and (max-width: 520px) {
  :root {
    --space-section: 48px;
  }
}

/* roulang page: article */
:root{
  --primary:#2f7fc9;
  --primary-dark:#1d5f9d;
  --primary-soft:#e9f3fa;
  --primary-soft-2:#f3f8fc;
  --deep:#1c405d;
  --deep-soft:#244c6d;
  --accent:#ed8b54;
  --success:#55a88c;
  --bg:#f6f9fc;
  --card:#ffffff;
  --text:#223544;
  --muted:#5a7184;
  --border:#d9e6f0;
  --border-light:#e6eef4;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow:0 6px 18px rgba(28,64,93,.07);
  --shadow-hover:0 12px 26px rgba(28,64,93,.12);
  --transition:all .25s ease;
}

*,*::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","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

.grid-container{
  max-width:1240px;
  width:100%;
  padding-left:1.25rem;
  padding-right:1.25rem;
  margin-left:auto;
  margin-right:auto;
}

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

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

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

a:focus-visible,
button:focus-visible{
  outline:3px solid rgba(47,127,201,.22);
  outline-offset:2px;
  border-radius:4px;
}

ul,ol,dl,dd,h1,h2,h3,h4,h5,h6,p,figure{
  margin:0;
  padding:0;
}

ul,ol{
  list-style:none;
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:1rem;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:var(--transition);
}

.btn:hover{
  transform:translateY(-2px);
}

.btn:active{
  transform:translateY(0);
}

.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(47,127,201,.24);
}

.btn-primary:hover{
  background:var(--primary-dark);
  color:#fff;
  box-shadow:0 12px 26px rgba(47,127,201,.32);
}

.btn-outline{
  background:transparent;
  color:var(--primary);
  border-color:rgba(47,127,201,.45);
}

.btn-outline:hover{
  background:rgba(47,127,201,.08);
  border-color:var(--primary);
  color:var(--primary-dark);
}

.btn-light{
  background:#fff;
  color:var(--deep);
}

.btn-light:hover{
  background:var(--primary-soft);
  color:var(--deep);
}

.btn-lg{
  height:56px;
  padding:0 34px;
  border-radius:12px;
  font-size:1.06rem;
}

/* ===== 站点头部 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border-light);
  box-shadow:0 2px 12px rgba(28,64,93,.04);
}

.site-header::before{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg,var(--primary) 0%,var(--primary) 62%,var(--accent) 62%,var(--accent) 100%);
}

.header-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  min-height:76px;
  display:flex;
  align-items:center;
  gap:28px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--deep);
}

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

.brand-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--deep);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:700;
  letter-spacing:0;
  box-shadow:0 0 0 4px rgba(28,64,93,.08);
}

.brand-mark[data-text]::after{
  content:attr(data-text);
}

.brand-name{
  font-size:1.26rem;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--deep);
}

.site-nav{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}

.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0;
  padding:0;
}

.nav-menu a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:76px;
  padding:0 12px;
  color:var(--text);
  font-weight:600;
  font-size:.98rem;
  border-bottom:3px solid transparent;
  transition:var(--transition);
}

.nav-menu a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:3px;
  background:var(--primary);
  border-radius:2px 2px 0 0;
  opacity:0;
  transform:scaleX(.5);
  transition:var(--transition);
}

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

.nav-menu a:hover::after{
  opacity:1;
  transform:scaleX(1);
}

.nav-menu li.is-active a{
  color:var(--primary);
}

.nav-menu li.is-active a::after{
  opacity:1;
  transform:scaleX(1);
}

.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
}

.nav-login{
  color:var(--muted);
  font-weight:600;
  font-size:.93rem;
  padding:0 8px;
}

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

.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:42px;
  padding:0 22px;
  background:var(--primary);
  color:#fff;
  border-radius:999px;
  font-size:.95rem;
  font-weight:700;
  transition:var(--transition);
}

.nav-cta:hover{
  background:var(--primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(47,127,201,.28);
}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  width:42px;
  height:42px;
  border:1px solid var(--border);
  background:#fff;
  border-radius:10px;
  cursor:pointer;
  padding:10px 9px;
  margin-left:auto;
}

.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--deep);
  border-radius:2px;
  transition:var(--transition);
}

.nav-toggle.is-active span:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2){
  opacity:0;
}

.nav-toggle.is-active span:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

/* ===== 文章头部 ===== */
.article-top{
  padding:84px 0 58px;
  background:
    linear-gradient(135deg, rgba(243,248,252,.98) 0%, rgba(255,255,255,.98) 100%),
    url('/assets/images/backpic/back-1.webp') center 25% / cover no-repeat;
  border-bottom:1px solid var(--border-light);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.92rem;
  color:var(--muted);
  margin-bottom:22px;
}

.breadcrumb a{
  color:var(--muted);
}

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

.breadcrumb .crumb-sep{
  color:#9db2c3;
}

.breadcrumb .current{
  color:var(--text);
  font-weight:600;
}

.article-top-content{
  text-align:left;
}

.cat-badge{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:0 14px;
  background:var(--accent);
  color:#fff;
  border-radius:999px;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:18px;
}

.article-h1{
  font-size:clamp(1.75rem, 3.2vw, 2.7rem);
  line-height:1.3;
  letter-spacing:-.018em;
  color:var(--deep);
  font-weight:800;
  max-width:900px;
  margin-bottom:22px;
  text-wrap:balance;
}

.article-meta-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  color:var(--muted);
  font-size:.92rem;
}

.meta-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.meta-item::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--primary-soft);
  box-shadow:inset 0 0 0 2px var(--primary);
}

/* ===== 文章正文区 ===== */
.article-content-section{
  padding:64px 0 24px;
}

.article-content-wrapper{
  background:#fff;
  border-radius:22px;
  padding:clamp(28px, 5vw, 64px);
  box-shadow:var(--shadow);
  border:1px solid var(--border-light);
  position:relative;
  overflow:hidden;
}

.article-content-wrapper::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:5px;
  background:linear-gradient(180deg, var(--primary), var(--primary-soft));
  opacity:.6;
}

.rich-text{
  font-size:1.08rem;
  line-height:1.9;
  color:var(--text);
}

.rich-text p{
  margin:0 0 1.7em;
}

.rich-text h2,
.rich-text h3,
.rich-text h4{
  color:var(--deep);
  font-weight:800;
  line-height:1.4;
  margin:2.2em 0 .8em;
}

.rich-text h2{
  font-size:1.65rem;
  padding-bottom:.55em;
  border-bottom:1px solid var(--border-light);
}

.rich-text h3{
  font-size:1.32rem;
}

.rich-text h4{
  font-size:1.12rem;
}

.rich-text ul,
.rich-text ol{
  margin:0 0 1.8em;
  padding-left:0;
}

.rich-text ul li{
  position:relative;
  padding-left:1.7em;
  margin-bottom:.55em;
}

.rich-text ul li::before{
  content:"";
  position:absolute;
  left:.15em;
  top:.78em;
  width:9px;
  height:9px;
  border-radius:3px;
  background:var(--primary);
}

.rich-text ol{
  counter-reset:article-list;
}

.rich-text ol li{
  counter-increment:article-list;
  position:relative;
  padding-left:1.9em;
  margin-bottom:.55em;
}

.rich-text ol li::before{
  content:counter(article-list);
  position:absolute;
  left:0;
  top:.06em;
  width:24px;
  height:24px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:.78rem;
  font-weight:800;
  border-radius:7px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.rich-text a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:3px;
}

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

.rich-text blockquote{
  margin:2.2em 0;
  padding:22px 28px;
  background:var(--primary-soft-2);
  border-left:4px solid var(--primary);
  border-radius:0 14px 14px 0;
  color:#31597a;
}

.rich-text blockquote p{
  margin-bottom:.6em;
}

.rich-text blockquote p:last-child{
  margin-bottom:0;
}

.rich-text img{
  max-width:100%;
  margin:24px 0;
  border-radius:16px;
  box-shadow:0 8px 26px rgba(28,64,93,.1);
}

.rich-text table{
  width:100%;
  margin:1.8em 0;
  border-collapse:collapse;
  font-size:.96rem;
}

.rich-text table th,
.rich-text table td{
  border:1px solid var(--border);
  padding:12px 14px;
  text-align:left;
}

.rich-text table th{
  background:var(--primary-soft-2);
  color:var(--deep);
  font-weight:700;
}

.rich-text code{
  background:#eef4f8;
  color:#24537c;
  border-radius:6px;
  padding:.15em .45em;
  font-size:.92em;
}

.rich-text pre{
  background:var(--deep);
  color:#eaf3fb;
  border-radius:14px;
  padding:20px 24px;
  overflow-x:auto;
  line-height:1.6;
  margin:1.8em 0;
}

/* ===== 正文底部 ===== */
.article-bottom-tools{
  margin-top:52px;
  padding-top:24px;
  border-top:1px solid var(--border-light);
}

.article-tag-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}

.article-tag-line .tag-label{
  font-size:.88rem;
  color:var(--muted);
  font-weight:600;
}

.article-tag{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:0 14px;
  background:var(--primary-soft);
  border:1px solid #d3e6f5;
  color:var(--primary-dark);
  border-radius:999px;
  font-size:.84rem;
  font-weight:700;
}

.article-tag:hover{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
}

.article-prevnext{
  margin-top:18px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}

.article-pn-link{
  display:block;
  padding:18px 22px;
  background:var(--primary-soft-2);
  border:1px solid var(--border-light);
  border-radius:14px;
  transition:var(--transition);
}

.article-pn-link:hover{
  background:#fff;
  border-color:#bfdbf1;
  transform:translateY(-3px);
  box-shadow:var(--shadow);
}

.article-pn-link span{
  display:block;
  color:var(--muted);
  font-size:.84rem;
  margin-bottom:5px;
}

.article-pn-link strong{
  font-size:1rem;
  color:var(--text);
}

.article-pn-link.next{
  text-align:right;
}

/* ===== 空内容 ===== */
.notfound-card{
  background:#fff;
  border-radius:22px;
  padding:clamp(48px, 8vw, 96px) 24px;
  text-align:center;
  box-shadow:var(--shadow);
  border:1px solid var(--border-light);
}

.notfound-icon{
  width:84px;
  height:84px;
  margin:0 auto 24px;
  background:var(--primary-soft);
  border-radius:26px;
  color:var(--primary);
  font-size:38px;
  font-weight:800;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 0 0 8px rgba(47,127,201,.06);
}

.notfound-card h2{
  font-size:1.7rem;
  color:var(--deep);
  font-weight:800;
  margin-bottom:14px;
}

.notfound-card p{
  max-width:560px;
  margin:0 auto 28px;
  color:var(--muted);
  font-size:1rem;
  line-height:1.8;
}

/* ===== 快捷服务区 ===== */
.article-support-section{
  padding:72px 0 30px;
}

.article-support-header{
  text-align:center;
  max-width:720px;
  margin:0 auto 46px;
}

.article-support-header h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  color:var(--deep);
  font-weight:800;
  margin-bottom:12px;
}

.article-support-header p{
  color:var(--muted);
  font-size:1rem;
}

.support-card{
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:18px;
  padding:30px 26px;
  height:100%;
  transition:var(--transition);
  box-shadow:0 2px 10px rgba(28,64,93,.04);
}

.support-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:#cfe1f0;
}

.support-icon{
  width:48px;
  height:48px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:22px;
  font-weight:800;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
}

.support-card h3{
  font-size:1.15rem;
  color:var(--deep);
  font-weight:800;
  margin-bottom:8px;
}

.support-card p{
  color:var(--muted);
  font-size:.95rem;
  line-height:1.75;
  margin-bottom:14px;
}

.support-card .card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.92rem;
  font-weight:700;
  color:var(--primary);
}

.support-card .card-link:hover{
  color:var(--primary-dark);
  gap:10px;
}

/* ===== 更多频道区 ===== */
.article-channel-section{
  padding:40px 0 72px;
}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:34px;
}

.section-head h2{
  font-size:clamp(1.45rem, 2.4vw, 2rem);
  color:var(--deep);
  font-weight:800;
  line-height:1.3;
}

.section-head .section-excerpt{
  color:var(--muted);
  margin-top:8px;
  font-size:.98rem;
}

.channel-card{
  display:flex;
  align-items:stretch;
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:18px;
  overflow:hidden;
  margin-bottom:22px;
  transition:var(--transition);
  box-shadow:0 2px 10px rgba(28,64,93,.04);
}

.channel-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:#cfe1f0;
}

.channel-media{
  width:42%;
  min-height:220px;
  overflow:hidden;
  background:var(--primary-soft);
}

.channel-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}

.channel-card:hover .channel-media img{
  transform:scale(1.04);
}

.channel-body{
  flex:1;
  padding:26px 28px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}

.channel-name{
  display:inline-flex;
  align-items:center;
  width:fit-content;
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-radius:999px;
  padding:4px 14px;
  font-size:.8rem;
  font-weight:800;
  margin-bottom:12px;
  letter-spacing:.02em;
}

.channel-card:hover .channel-name{
  background:var(--primary);
  color:#fff;
}

.channel-body h3{
  font-size:1.3rem;
  color:var(--deep);
  font-weight:800;
  margin-bottom:8px;
  line-height:1.4;
}

.channel-body p{
  color:var(--muted);
  font-size:.95rem;
  line-height:1.75;
  margin-bottom:14px;
}

.channel-arrow{
  display:flex;
  align-items:center;
  gap:7px;
  font-weight:700;
  font-size:.92rem;
  color:var(--primary);
}

.channel-card:hover .channel-arrow{
  color:var(--primary-dark);
  gap:11px;
}

/* ===== 全站 CTA ===== */
.article-site-cta{
  padding:0 0 80px;
}

.article-cta-panel{
  background:var(--deep);
  border-radius:24px;
  padding:clamp(40px, 6vw, 72px) clamp(26px, 5vw, 64px);
  color:#fff;
  position:relative;
  overflow:hidden;
}

.article-cta-panel::before{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:260px;
  height:260px;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.16;
  border-radius:48px;
  transform:rotate(8deg);
  pointer-events:none;
}

.article-cta-panel::after{
  content:"";
  position:absolute;
  left:-50px;
  bottom:-70px;
  width:180px;
  height:180px;
  border:4px solid rgba(255,255,255,.08);
  border-radius:30px;
  transform:rotate(20deg);
  pointer-events:none;
}

.article-cta-wrap{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}

.article-cta-wrap h2{
  font-size:clamp(1.55rem, 2.6vw, 2.1rem);
  line-height:1.35;
  font-weight:800;
  margin-bottom:12px;
}

.article-cta-wrap p{
  color:#c6d8e8;
  font-size:1rem;
  line-height:1.8;
  max-width:560px;
}

.cta-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  flex-shrink:0;
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--deep);
  color:#c7d8e7;
}

.site-footer .brand-name{
  color:#fff;
}

.site-footer .brand-mark{
  background:#fff;
  color:var(--deep);
  box-shadow:0 0 0 4px rgba(255,255,255,.1);
}

.footer-main{
  max-width:1240px;
  margin:0 auto;
  padding:72px 24px 44px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:44px;
  align-items:start;
}

.footer-desc{
  color:#aec5d9;
  font-size:.96rem;
  line-height:1.85;
  margin-top:18px;
  max-width:340px;
}

.footer-cols h3,
.footer-col h3{
  color:#fff;
  font-size:1.02rem;
  font-weight:800;
  letter-spacing:.04em;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,.12);
}

.footer-cols ul,
.footer-col ul{
  margin:0;
  padding:0;
}

.footer-cols li,
.footer-col li{
  margin-bottom:12px;
}

.footer-cols a,
.footer-col a{
  color:#b6c9db;
  font-size:.94rem;
  transition:var(--transition);
}

.footer-cols a:hover,
.footer-col a:hover{
  color:#fff;
  padding-left:5px;
}

.footer-contact li{
  color:#b6c9db;
  font-size:.92rem;
  display:flex;
  align-items:flex-start;
  gap:10px;
  line-height:1.7;
}

.footer-contact li i{
  display:inline-flex;
  width:22px;
  height:22px;
  background:rgba(255,255,255,.1);
  color:#fff;
  border-radius:7px;
  font-style:normal;
  font-size:.72rem;
  font-weight:800;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:2px;
}

.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:24px;
  text-align:center;
  color:#8da9c1;
  font-size:.88rem;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .header-inner{
    gap:20px;
  }

  .nav-menu a{
    padding:0 9px;
  }

  .footer-main{
    grid-template-columns:1.2fr 1fr 1fr;
    gap:40px 32px;
  }

  .channel-media{
    width:38%;
  }
}

@media (max-width:900px){
  .header-inner{
    flex-wrap:wrap;
    padding:8px 18px;
    min-height:0;
  }

  .site-header{
    position:sticky;
  }

  .brand-name{
    font-size:1.15rem;
  }

  .nav-toggle{
    display:flex;
  }

  .site-nav{
    display:none;
    width:100%;
    flex-basis:100%;
    flex-direction:column;
    align-items:stretch;
    background:#fff;
    border-top:1px solid var(--border-light);
    margin-top:8px;
    padding:12px 6px 18px;
    border-radius:0 0 18px 18px;
    box-shadow:0 20px 30px rgba(28,64,93,.12);
  }

  .site-nav.is-open{
    display:flex;
  }

  .nav-menu,
  .nav-actions{
    flex-direction:column;
    align-items:stretch;
    width:100%;
    gap:6px;
  }

  .nav-menu a{
    height:auto;
    padding:14px 14px;
    width:100%;
    border-bottom:1px solid var(--border-light);
    border-radius:10px;
  }

  .nav-menu a::after{
    display:none;
  }

  .nav-menu li{
    width:100%;
  }

  .nav-menu li.is-active a{
    background:var(--primary-soft);
  }

  .nav-login{
    text-align:center;
    padding:12px 8px;
    border-bottom:1px solid var(--border-light);
  }

  .nav-cta{
    justify-content:center;
    width:100%;
    min-height:46px;
  }

  .article-top{
    padding:54px 0 42px;
  }

  .article-content-section{
    padding-top:44px;
  }

  .article-h1{
    font-size:1.85rem;
    line-height:1.35;
  }

  .article-content-wrapper{
    padding:28px 22px;
  }

  .rich-text{
    font-size:1.02rem;
  }

  .rich-text h2{
    font-size:1.42rem;
  }

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

  .channel-media{
    width:100%;
    min-height:180px;
  }

  .channel-body{
    padding:22px;
  }

  .footer-main{
    grid-template-columns:1fr 1fr;
    padding-top:54px;
  }

  .article-cta-panel::before{
    opacity:.08;
  }
}

@media (max-width:640px){
  .article-support-section{
    padding-top:50px;
  }

  .article-channel-section{
    padding-bottom:50px;
  }

  .footer-main{
    grid-template-columns:1fr;
    gap:30px;
    padding:52px 18px 30px;
  }

  .footer-desc{
    max-width:100%;
  }

  .article-bottom-tools{
    margin-top:36px;
  }

  .article-prevnext{
    grid-template-columns:1fr;
  }

  .article-cta-wrap{
    flex-direction:column;
    align-items:flex-start;
  }

  .cta-actions{
    width:100%;
  }

  .cta-actions .btn{
    width:100%;
  }

  .article-content-wrapper{
    border-radius:16px;
    padding:26px 18px;
  }

  .notfound-card{
    padding:40px 20px;
  }
}

@media (max-width:520px){
  .header-inner{
    padding:8px 14px;
  }

  .brand-mark{
    width:34px;
    height:34px;
    font-size:17px;
    border-radius:10px;
  }

  .brand-name{
    font-size:1.08rem;
  }

  .footer-main{
    padding-left:14px;
    padding-right:14px;
  }

  .article-meta-line{
    gap:8px 14px;
  }
}

/* roulang page: category3 */
/* ========== Design tokens ========== */
        :root {
            --page-bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --brand: #2F7FC9;
            --brand-dark: #236AA6;
            --navy: #1C405D;
            --accent: #ED8B54;
            --green: #55A88C;
            --light-blue: #E9F3FA;
            --border: #D9E6F0;
            --text: #223544;
            --text-muted: #5A7184;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-btn: 8px;
            --shadow-sm: 0 6px 18px rgba(28, 64, 93, .07);
            --shadow-hover: 0 14px 30px rgba(28, 64, 93, .13);
            --container: 1200px;
            --header-h: 72px;
        }

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

        body {
            margin: 0;
            background: var(--page-bg);
            color: var(--text);
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        html {
            scroll-behavior: smooth;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .25s ease;
        }

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

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

        ul, ol {
            margin: 0;
            padding: 0;
        }

        .row {
            max-width: var(--container);
            margin: 0 auto;
        }

        .columns, .column {
            padding-left: 18px;
            padding-right: 18px;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.2;
            border: 2px solid transparent;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
        }

        .btn i {
            font-size: 14px;
        }

        .btn-primary {
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
            box-shadow: 0 8px 20px rgba(47, 127, 201, .22);
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(47, 127, 201, .3);
        }

        .btn-secondary {
            background: transparent;
            border-color: rgba(47, 127, 201, .7);
            color: var(--brand);
        }

        .btn-secondary:hover {
            background: rgba(47, 127, 201, .08);
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--navy);
            border-color: #fff;
        }

        .btn-light:hover {
            color: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, .08);
        }

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

        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(47, 127, 201, .35);
            outline-offset: 3px;
        }

        /* ========== Shared header ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .96);
            border-bottom: 1px solid rgba(217, 230, 240, .9);
            box-shadow: 0 1px 0 rgba(28, 64, 93, .02);
            transition: box-shadow .3s ease;
        }

        .site-header.is-scrolled {
            box-shadow: 0 8px 30px rgba(28, 64, 93, .08);
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 0 20px;
            min-height: var(--header-h);
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-weight: 700;
        }

        .brand-mark {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 11px;
            background: var(--brand);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            overflow: hidden;
        }

        .brand-mark::before {
            content: "";
            position: absolute;
            top: 4px;
            left: 4px;
            width: 12px;
            height: 12px;
            background: rgba(255, 255, 255, .16);
            border-radius: 3px;
        }

        .brand-mark::after {
            content: "";
            position: absolute;
            bottom: 3px;
            right: 3px;
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
            opacity: .55;
        }

        .brand-mark span {
            position: relative;
            z-index: 2;
        }

        .brand-name {
            font-size: 20px;
            letter-spacing: .02em;
            color: var(--navy);
            white-space: nowrap;
        }

        .site-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex: 1;
            margin-left: 32px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 6px;
        }

        .nav-menu li a {
            display: inline-flex;
            align-items: center;
            min-height: 40px;
            padding: 4px 16px;
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            border-radius: 40px;
            position: relative;
            transition: background .2s ease, color .2s ease;
        }

        .nav-menu li a:hover {
            color: var(--brand);
            background: var(--light-blue);
        }

        .nav-menu li.is-active > a {
            color: var(--brand);
            background: rgba(47, 127, 201, .08);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 16px;
        }

        .nav-login {
            min-height: 42px;
            display: inline-flex;
            align-items: center;
            padding: 0 16px;
            border-radius: var(--radius-btn);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid transparent;
            transition: border-color .2s ease, color .2s ease;
        }

        .nav-login:hover {
            border-color: var(--border);
            color: var(--navy);
        }

        .nav-cta {
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 0 24px;
            border-radius: 50px;
            background: var(--brand);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 8px 20px rgba(47, 127, 201, .24);
            transition: all .25s ease;
        }

        .nav-cta:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(47, 127, 201, .32);
        }

        .nav-cta i {
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            width: 44px;
            height: 44px;
            background: var(--light-blue);
            border: 1px solid var(--border);
            border-radius: 10px;
            gap: 5px;
            cursor: pointer;
            padding: 10px;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--navy);
            border-radius: 4px;
            transition: transform .25s ease, opacity .25s ease;
        }

        .nav-toggle.is-active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.is-active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.is-active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        body {
            padding-top: var(--header-h);
        }

        /* ========== Section framework ========== */
        .section-block {
            padding: 88px 0;
        }

        .section-block.bg-soft {
            background: var(--page-bg);
        }

        .section-block.bg-white {
            background: #fff;
        }

        .section-head {
            max-width: 720px;
            margin-bottom: 44px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .04em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-eyebrow i {
            color: var(--accent);
        }

        .section-head h2 {
            font-size: 32px;
            line-height: 1.25;
            color: var(--navy);
            margin: 0 0 14px;
            font-weight: 700;
            letter-spacing: -.01em;
        }

        .section-head p {
            margin: 0;
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ========== Subpage hero ========== */
        .subpage-hero {
            position: relative;
            padding: 64px 0 76px;
            background:
                linear-gradient(104deg, rgba(246, 249, 252, .98) 18%, rgba(233, 243, 250, .88) 66%, rgba(233, 243, 250, .6) 100%),
                url('/assets/images/backpic/back-2.webp') center right / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .subpage-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin: 0 0 28px;
            padding: 0;
            list-style: none;
            color: var(--text-muted);
            font-size: 14px;
        }

        .subpage-hero .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .subpage-hero .breadcrumb li + li::before {
            content: "/";
            color: #A6B8C7;
        }

        .subpage-hero .breadcrumb a {
            color: var(--text-muted);
        }

        .subpage-hero .breadcrumb a:hover {
            color: var(--brand);
        }

        .breadcrumb-current {
            color: var(--text);
            font-weight: 600;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(47, 127, 201, .1);
            color: var(--brand);
            border: 1px solid rgba(47, 127, 201, .18);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            margin-bottom: 18px;
        }

        .category-badge i {
            color: var(--accent);
        }

        .subpage-hero h1 {
            font-size: 42px;
            line-height: 1.2;
            color: var(--navy);
            margin: 0 0 18px;
            font-weight: 800;
            letter-spacing: -.02em;
        }

        .subpage-hero .hero-desc {
            max-width: 640px;
            font-size: 17px;
            line-height: 1.9;
            color: #3E5265;
            margin: 0 0 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-spec-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(47, 127, 201, .12);
        }

        .hero-spec-list span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .hero-spec-list i {
            color: var(--green);
        }

        /* ========== Guide channel cards ========== */
        .guide-cards .card-classic {
            height: 100%;
        }

        .card-classic {
            position: relative;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 34px 30px 32px;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .card-classic:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .card-classic .card-icon {
            width: 54px;
            height: 54px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: var(--light-blue);
            color: var(--brand);
            font-size: 24px;
            margin-bottom: 20px;
        }

        .card-classic h3 {
            font-size: 20px;
            color: var(--navy);
            margin: 0 0 12px;
            font-weight: 700;
        }

        .card-classic .card-text {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin: 0 0 22px;
        }

        .mini-list {
            list-style: none;
            padding: 0;
            margin: 0 0 26px;
        }

        .mini-list li {
            position: relative;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--text);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 9px;
        }

        .mini-list li i {
            margin-top: 4px;
            color: var(--brand);
            font-size: 13px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
        }

        .card-link:hover {
            color: var(--brand-dark);
        }

        .card-link i {
            font-size: 12px;
            transition: transform .2s ease;
        }

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ========== Steps ========== */
        .steps-wrap {
            position: relative;
        }

        .steps-wrap::before {
            content: "";
            position: absolute;
            top: 54px;
            left: 6%;
            right: 6%;
            height: 2px;
            background-image: radial-gradient(circle, #BCCEE0 2px, transparent 2px);
            background-size: 14px 14px;
            z-index: 0;
        }

        .step-card {
            position: relative;
            z-index: 2;
            text-align: left;
            background: transparent;
            padding-top: 0;
        }

        .step-num {
            font-size: 15px;
            font-weight: 700;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: #fff;
            border: 2px solid rgba(237, 139, 84, .35);
            border-radius: 50%;
            margin-bottom: 20px;
        }

        .step-card-body {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            height: 100%;
            box-shadow: var(--shadow-sm);
        }

        .step-card-body h3 {
            font-size: 17px;
            color: var(--navy);
            margin: 0 0 12px;
            font-weight: 700;
        }

        .step-card-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin: 0;
        }

        /* ========== Reference configuration ========== */
        .text-image-grid {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .text-image-grid .media-side {
            flex: 0 0 calc(50% - 24px);
        }

        .text-image-grid .content-side {
            flex: 1;
        }

        .media-figure {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .media-figure img {
            display: block;
            width: 100%;
            height: 330px;
            object-fit: cover;
        }

        .media-figure-figcaption {
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 18px;
            background: rgba(28, 64, 93, .8);
            color: #fff;
            border-radius: 10px;
            padding: 10px 16px;
            font-size: 13px;
            backdrop-filter: blur(6px);
            line-height: 1.6;
        }

        .config-list {
            list-style: none;
            margin: 0;
        }

        .config-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 18px 0;
            border-bottom: 1px dashed var(--border);
        }

        .config-list li:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .config-list .cfg-num {
            flex: 0 0 32px;
            height: 32px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--light-blue);
            color: var(--brand);
            font-size: 14px;
            font-weight: 700;
        }

        .config-list h4 {
            color: var(--navy);
            font-size: 17px;
            margin: 0 0 6px;
            font-weight: 600;
        }

        .config-list p {
            color: var(--text-muted);
            font-size: 14px;
            margin: 0;
            line-height: 1.8;
        }

        /* ========== Practical actions ========== */
        .action-list-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 38px 36px;
            margin-bottom: 28px;
        }

        .action-list-card:last-child {
            margin-bottom: 0;
        }

        .action-list-card h3 {
            font-size: 18px;
            color: var(--navy);
            font-weight: 700;
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .action-list-card h3 i {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #fff;
            font-size: 18px;
        }

        .action-list-card p {
            color: var(--text-muted);
            line-height: 1.85;
            margin: 0;
        }

        .action-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        /* ========== FAQ / Accordion ========== */
        .faq-wrap {
            max-width: 880px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .25s ease;
        }

        .faq-item.is-open {
            border-left: 4px solid var(--brand);
            box-shadow: var(--shadow-sm);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            background: transparent;
            border: 0;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            line-height: 1.5;
        }

        .faq-q:hover {
            color: var(--brand);
        }

        .faq-q .faq-icon {
            flex: 0 0 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--light-blue);
            color: var(--brand);
            font-size: 14px;
            transition: transform .25s ease, background .25s ease;
        }

        .faq-item.is-open .faq-icon {
            transform: rotate(180deg);
            background: var(--brand);
            color: #fff;
        }

        .faq-a {
            display: none;
            padding: 0 26px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            background: rgba(246, 249, 252, .45);
        }

        .faq-item.is-open .faq-a {
            display: block;
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta {
            background: var(--navy);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .bottom-cta::before {
            content: "";
            position: absolute;
            top: -42px;
            right: -42px;
            width: 180px;
            height: 180px;
            background-image:
                linear-gradient(90deg, rgba(255, 255, 255, .05) 25%, transparent 25%),
                linear-gradient(90deg, transparent 75%, rgba(255, 255, 255, .05) 75%),
                linear-gradient(180deg, rgba(255, 255, 255, .05) 25%, transparent 25%),
                linear-gradient(180deg, transparent 75%, rgba(255, 255, 255, .05) 75%);
            background-size: 32px 32px;
            transform: rotate(8deg);
        }

        .bottom-cta .row {
            position: relative;
            z-index: 2;
        }

        .bottom-cta h2 {
            color: #fff;
            font-size: 34px;
            line-height: 1.35;
            margin: 0 0 18px;
            font-weight: 700;
        }

        .bottom-cta p {
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            max-width: 680px;
            margin: 0 auto 34px;
            line-height: 1.8;
        }

        .cta-note {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 22px;
            margin-top: 20px;
        }

        .cta-note span {
            color: rgba(255, 255, 255, .72);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .cta-note i {
            color: var(--accent);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #162E42;
            color: #BDD0E0;
            padding-top: 72px;
        }

        .footer-main {
            max-width: var(--container);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
            gap: 48px;
            padding: 0 24px 56px;
        }

        .site-footer .brand-name {
            color: #fff;
        }

        .footer-desc {
            margin: 18px 0 0;
            color: #91AABC;
            font-size: 14px;
            max-width: 300px;
            line-height: 1.8;
        }

        .footer-cols h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 20px;
            letter-spacing: .02em;
        }

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

        .footer-cols li {
            margin-bottom: 12px;
        }

        .footer-cols a {
            color: #91AABC;
            font-size: 14px;
            line-height: 1.6;
            transition: color .2s ease;
        }

        .footer-cols a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-contact li {
            display: flex;
            gap: 8px;
            align-items: flex-start;
            color: #91AABC;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-contact i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            margin-top: 2px;
            border-radius: 50%;
            background: rgba(47, 127, 201, .2);
            color: #A8D4F5;
            font-size: 12px;
            font-style: normal;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            text-align: center;
            color: #6F8AA0;
            font-size: 13px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .header-inner {
                align-items: center;
            }

            .site-nav {
                margin-left: 0;
            }

            .nav-menu li a {
                padding: 4px 10px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 0 16px;
                font-size: 14px;
            }

            .nav-login {
                padding: 0 10px;
            }

            .text-image-grid .media-side {
                flex-basis: 44%;
            }
        }

        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
                order: 2;
            }

            .site-header {
                position: sticky;
                top: 0;
            }

            body {
                padding-top: 0;
            }

            .header-inner {
                flex-wrap: nowrap;
                padding: 10px 16px;
                min-height: 64px;
            }

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

            .site-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                background: #fff;
                padding: 18px;
                gap: 14px;
                margin-left: 0;
                box-shadow: 0 20px 30px rgba(28, 64, 93, .14);
                border-bottom: 1px solid var(--border);
                display: none;
                margin-left: 0;
                width: 100%;
            }

            .site-nav.is-open {
                display: block;
            }

            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .nav-menu li a {
                min-height: 44px;
                display: flex;
                align-items: center;
                width: 100%;
                border-radius: 8px;
            }

            .nav-actions {
                flex-direction: column;
                gap: 12px;
                margin-left: 0;
                margin-top: 16px;
                padding-top: 16px;
                border-top: 1px solid var(--border);
            }

            .nav-login,
            .nav-cta {
                width: 100%;
                justify-content: center;
            }

            .subpage-hero {
                padding: 42px 0 50px;
            }

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

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

            .section-head h2 {
                font-size: 27px;
            }

            .steps-wrap::before {
                display: none;
            }

            .step-card {
                margin-bottom: 24px;
            }

            .text-image-grid {
                flex-direction: column;
                gap: 36px;
            }

            .text-image-grid .media-side {
                flex-basis: auto;
                width: 100%;
            }

            .text-image-grid .content-side {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .row {
                max-width: 100%;
            }

            .columns, .column {
                padding-left: 14px;
                padding-right: 14px;
            }

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

            .action-list-card {
                padding: 26px 22px;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 34px;
                padding-left: 20px;
                padding-right: 20px;
            }

            .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .subpage-hero h1 {
                font-size: 27px;
            }

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

            .hero-actions .btn {
                width: 100%;
            }

            .section-head h2 {
                font-size: 25px;
            }

            .card-classic {
                padding: 26px 20px;
            }

            .media-figure img {
                height: 240px;
            }

            .faq-q {
                padding: 16px 16px;
                font-size: 15px;
            }

            .faq-a {
                padding: 0 18px 18px;
            }

            .footer-bottom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category4 */
:root {
    --primary: #2F7FC9;
    --primary-dark: #2568A6;
    --deep: #1C405D;
    --accent: #ED8B54;
    --bg: #F6F9FC;
    --white: #FFFFFF;
    --text: #223544;
    --muted: #5A7184;
    --border: #D9E6F0;
    --light-blue: #E9F3FA;
    --success: #55A88C;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 6px 18px rgba(28, 64, 93, 0.07);
    --shadow-lg: 0 12px 24px rgba(28, 64, 93, 0.12);
    --container: 1200px;
}
html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
*,
*:before,
*:after {
    box-sizing: border-box;
}
img {
    max-width: 100%;
    display: block;
    height: auto;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
a:hover {
    color: var(--primary-dark);
}
ul,
ol,
p,
h1,
h2,
h3,
h4,
figure {
    margin: 0;
}
:focus-visible {
    outline: 2px solid rgba(47, 127, 201, .4);
    outline-offset: 3px;
    border-radius: 6px;
}
.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--deep);
    color: #fff;
    padding: 8px 18px;
    z-index: 200;
    border-radius: 0 0 8px 0;
}
.skip-link:focus {
    left: 0;
    color: #fff;
}
.row {
    max-width: var(--container);
    margin-left: auto;
    margin-right: auto;
}

/* Header & Brand */
.site-header {
    position: sticky;
    top: 0;
    z-index: 120;
    background: rgba(255, 255, 255, .98);
    border-top: 4px solid var(--primary);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 18px rgba(28, 64, 93, .06);
}
.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: var(--deep);
    flex-shrink: 0;
}
.brand-mark {
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(47, 127, 201, .28);
}
.brand-mark::before {
    content: attr(data-text);
}
.brand-name {
    font-size: 19px;
    letter-spacing: .01em;
    font-weight: 800;
    color: var(--deep);
    white-space: nowrap;
}
.site-nav {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
}
.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-menu a {
    display: block;
    padding: 10px 13px;
    border-radius: 10px;
    color: var(--text);
    font-weight: 600;
    font-size: 15px;
    position: relative;
    line-height: 1.4;
}
.nav-menu a:hover {
    color: var(--primary);
    background: var(--light-blue);
}
.nav-menu li.is-active a {
    color: var(--primary);
    font-weight: 700;
}
.nav-menu li.is-active a::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 5px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-login {
    display: inline-flex;
    align-items: center;
    padding: 9px 13px;
    color: var(--muted);
    font-weight: 600;
    font-size: 14px;
    border-radius: 10px;
}
.nav-login:hover {
    color: var(--primary);
    background: var(--light-blue);
}
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    min-height: 42px;
    padding: 0 22px;
    border-radius: 10px;
    box-shadow: 0 6px 16px rgba(47, 127, 201, .24);
}
.nav-cta:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 0;
    position: relative;
    cursor: pointer;
    z-index: 20;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--deep);
    margin: 5px auto;
    border-radius: 2px;
    transition: transform .25s, opacity .25s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 0 28px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 16px;
    border: 0;
    cursor: pointer;
    text-align: center;
    transition: all .2s ease;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(47, 127, 201, .25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(28, 64, 93, .16);
}
.btn-ghost {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid rgba(47, 127, 201, .45);
}
.btn-ghost:hover {
    background: var(--light-blue);
    color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}
.btn-light {
    background: #fff;
    color: var(--deep);
}
.btn-light:hover {
    background: #F2F7FD;
    color: var(--deep);
    transform: translateY(-2px);
    box-shadow: 0 14px 26px rgba(0, 0, 0, .14);
}
.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, .68);
}
.btn-outline-light:hover {
    background: rgba(255, 255, 255, .12);
    color: #fff;
    border-color: #fff;
    transform: translateY(-2px);
}
.btn-sm {
    min-height: 40px;
    font-size: 14px;
    padding: 0 18px;
    border-radius: 8px;
}

/* Page Hero */
.page-hero {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg);
    background-image: linear-gradient(115deg, rgba(246, 249, 252, .98) 30%, rgba(233, 243, 250, .90) 72%, rgba(225, 239, 250, .62)), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
}
.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 220px;
    height: 220px;
    background-image: linear-gradient(45deg, rgba(47, 127, 201, .05) 25%, transparent 25%), linear-gradient(-45deg, rgba(47, 127, 201, .05) 25%, transparent 25%);
    background-size: 24px 24px;
    opacity: .7;
    pointer-events: none;
}
.hero-inner {
    position: relative;
    z-index: 2;
    padding: 44px 0 72px;
}
.breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 18px;
    letter-spacing: .02em;
}
.breadcrumb a {
    color: var(--muted);
    font-weight: 500;
}
.breadcrumb a:hover {
    color: var(--primary);
}
.breadcrumb span {
    margin: 0 8px;
    color: #9AB1C2;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(47, 127, 201, .08);
    border-radius: 999px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 16px;
}
.hero-eyebrow i {
    font-size: 13px;
}
.hero-copy h1 {
    font-size: 46px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--deep);
    letter-spacing: -.01em;
    margin-bottom: 18px;
}
.hero-copy p {
    color: #38566D;
    font-size: 17px;
    line-height: 1.8;
    max-width: 560px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}
.hero-note {
    margin-top: 14px;
    color: var(--muted);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 7px;
}
.hero-note i {
    color: var(--success);
}
.hero-facts {
    list-style: none;
    margin: 34px 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.hero-facts li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .78);
    border: 1px solid rgba(217, 230, 240, .9);
    border-radius: 12px;
    padding: 8px 14px;
    font-size: 13px;
    color: #334E64;
    box-shadow: 0 4px 10px rgba(28, 64, 93, .04);
}
.hero-facts i {
    color: var(--success);
    font-size: 14px;
}
.hero-art {
    position: relative;
}
.hero-art-inner {
    position: relative;
}
.hero-art-img {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(28, 64, 93, .14);
    transform: rotate(1deg);
}
.hero-art-img img {
    width: 100%;
    height: 330px;
    object-fit: cover;
}
.float-chip {
    position: absolute;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 9px;
    box-shadow: 0 10px 22px rgba(28, 64, 93, .1);
    line-height: 1.4;
}
.chip-online {
    top: 18px;
    right: -8px;
}
.chip-guide {
    left: -12px;
    bottom: 22px;
}
.state-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 4px rgba(85, 168, 140, .16);
}
.chip-icon {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    background: var(--light-blue);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Topic quick navigation */
.topic-nav {
    position: sticky;
    top: 72px;
    z-index: 90;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(28, 64, 93, .03);
}
.topic-nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.topic-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    margin-right: 2px;
}
.topic-chip {
    background: #fff;
    border: 1px solid var(--border);
    color: #334E64;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 999px;
    transition: all .2s ease;
}
.topic-chip:hover {
    background: var(--light-blue);
    border-color: rgba(47, 127, 201, .4);
    color: var(--primary);
    transform: translateY(-1px);
}

/* Sections */
.section {
    padding: 82px 0;
}
.section-head {
    max-width: 760px;
    margin: 0 auto 44px;
    text-align: center;
}
.section-tagline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(47, 127, 201, .08);
    border-radius: 999px;
    padding: 6px 14px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: 32px;
    color: var(--deep);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -.01em;
}
.section-head p {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.8;
}

/* FAQ main layout */
.faq-section {
    background: var(--bg);
    padding-bottom: 24px;
}
.faq-side {
    padding-top: 8px;
}
.faq-help-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 26px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}
.help-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--light-blue);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}
.faq-help-box h3 {
    font-size: 20px;
    color: var(--deep);
    font-weight: 800;
    margin-bottom: 8px;
}
.faq-help-box p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.75;
    margin-bottom: 18px;
}
.rail-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow-sm);
}
.rail-box h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--deep);
    margin-bottom: 10px;
    padding-left: 4px;
}
.faq-rail {
    list-style: none;
    margin: 0;
    padding: 0;
}
.faq-rail li {
    border-bottom: 1px solid #EDF3F8;
}
.faq-rail li:last-child {
    border-bottom: 0;
}
.faq-rail a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 13px 8px;
    color: #38566D;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    transition: all .2s ease;
}
.faq-rail a i {
    font-size: 13px;
    opacity: .5;
    transition: transform .2s;
}
.faq-rail a:hover {
    background: var(--light-blue);
    color: var(--primary);
    padding-left: 12px;
}
.faq-rail a:hover i {
    transform: translateX(4px);
    opacity: 1;
}
.faq-status {
    background: rgba(85, 168, 140, .08);
    border: 1px solid rgba(85, 168, 140, .18);
    border-radius: 14px;
    color: #3E7868;
    font-size: 14px;
    line-height: 1.7;
    padding: 14px 16px;
    margin-top: 18px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.faq-status i {
    color: var(--success);
    margin-top: 5px;
    flex-shrink: 0;
}

.faq-content {
    padding-left: 24px;
}
.faq-heading {
    font-size: 32px;
    font-weight: 800;
    color: var(--deep);
    line-height: 1.3;
    margin-bottom: 10px;
    letter-spacing: -.01em;
}
.faq-heading-desc {
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 36px;
    border-left: 3px solid var(--primary);
    padding-left: 14px;
}
.faq-group-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--deep);
    margin: 34px 0 18px;
    position: relative;
    padding-left: 16px;
}
.faq-group-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    bottom: 5px;
    width: 4px;
    border-radius: 3px;
    background: var(--primary);
}
.faq-group-title:first-of-type {
    margin-top: 30px;
}

/* Accordion */
.accordion.faq-accordion {
    list-style: none;
    margin: 0;
    padding: 0;
}
.faq-accordion .accordion-item {
    list-style: none;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(28, 64, 93, .04);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.faq-accordion .accordion-item.is-active {
    border-color: rgba(47, 127, 201, .35);
    box-shadow: 0 10px 24px rgba(28, 64, 93, .08);
}
.faq-accordion .accordion-item .accordion-title {
    display: block;
    position: relative;
    background: #fff;
    color: var(--text);
    font-weight: 700;
    font-size: 16px;
    line-height: 1.55;
    margin: 0;
    padding: 18px 54px 18px 20px;
    border-radius: 14px;
    transition: background .2s ease, color .2s ease;
}
.faq-accordion .accordion-item .accordion-title:hover {
    background: #FBFDFF;
    color: var(--primary);
}
.faq-accordion .accordion-item.is-active .accordion-title {
    background: var(--light-blue);
    color: var(--primary);
    border-radius: 14px 14px 0 0;
}
.faq-accordion .accordion-title::after {
    content: "";
    width: 9px;
    height: 9px;
    border-right: 2px solid #90A7B9;
    border-bottom: 2px solid #90A7B9;
    transform: translateY(-70%) rotate(45deg);
    position: absolute;
    right: 22px;
    top: 50%;
    border-radius: 0 0 1px 0;
    transition: transform .25s ease, border-color .2s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::after {
    content: "";
    border-color: var(--primary);
    transform: translateY(-30%) rotate(225deg);
}
.faq-accordion .accordion-content {
    padding: 16px 20px 20px 20px;
    background: #fff;
    border-top: 1px solid rgba(217, 230, 240, .65);
    color: #436279;
    font-size: 15px;
    line-height: 1.9;
}
.faq-accordion .accordion-content p {
    margin-bottom: 0;
}

/* Support service section */
.support-section {
    background: var(--bg);
    padding-top: 30px;
}
.support-grid {
    margin-top: 14px;
}
.support-grid .columns {
    margin-bottom: 20px;
}
.support-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px 26px;
    height: 100%;
    box-shadow: 0 6px 16px rgba(28, 64, 93, .05);
    transition: transform .2s ease, box-shadow .2s ease;
    display: block;
}
.support-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(28, 64, 93, .1);
    border-color: rgba(47, 127, 201, .3);
}
.support-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}
.support-icon {
    width: 50px;
    height: 50px;
    border-radius: 15px;
    background: var(--light-blue);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.support-tag {
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    background: #F0F6FB;
    border-radius: 999px;
    padding: 5px 12px;
}
.support-card h3 {
    font-size: 20px;
    color: var(--deep);
    font-weight: 800;
    margin-bottom: 10px;
}
.support-card p {
    font-size: 14px;
    line-height: 1.8;
    color: #516B7D;
    margin-bottom: 18px;
}
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
}
.text-link i {
    transition: transform .2s;
}
.text-link:hover {
    color: var(--primary-dark);
}
.text-link:hover i {
    transform: translateX(4px);
}

/* CTA */
.cta-zone {
    background: var(--bg);
    padding: 18px 0 90px;
}
.cta-band {
    position: relative;
    overflow: hidden;
    background: var(--deep);
    border-radius: 24px;
    padding: 52px 56px;
    color: #fff;
}
.cta-band::before {
    content: "";
    position: absolute;
    top: -40px;
    right: 60px;
    width: 160px;
    height: 160px;
    border-radius: 28px;
    background: rgba(47, 127, 201, .14);
    transform: rotate(18deg);
}
.cta-band::after {
    content: "";
    position: absolute;
    right: 30px;
    bottom: 28px;
    width: 100px;
    height: 100px;
    opacity: .14;
    background-image: linear-gradient(90deg, #fff 2px, transparent 2px), linear-gradient(#fff 2px, transparent 2px);
    background-size: 18px 18px;
    border-radius: 10px;
    pointer-events: none;
}
.cta-band h2 {
    position: relative;
    z-index: 1;
    font-size: 30px;
    font-weight: 800;
    line-height: 1.35;
    color: #fff;
    margin-bottom: 14px;
}
.cta-band > p {
    position: relative;
    z-index: 1;
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .78);
    max-width: 680px;
}
.cta-actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}
.cta-points {
    position: relative;
    z-index: 1;
    list-style: none;
    margin: 26px 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 14px 24px;
    font-size: 14px;
    color: rgba(255, 255, 255, .72);
}
.cta-points li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.cta-points i {
    color: #8EC8F5;
}

/* Footer */
.site-footer {
    background: var(--deep);
    color: rgba(255, 255, 255, .82);
    padding-top: 56px;
    border-top: 4px solid var(--primary);
}
.site-footer .brand-name {
    color: #fff;
}
.footer-main {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px 36px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 44px;
}
.footer-desc {
    max-width: 320px;
    font-size: 14px;
    line-height: 1.9;
    color: rgba(255, 255, 255, .65);
    margin-top: 16px;
}
.footer-cols h3 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 14px;
    font-weight: 700;
}
.footer-cols ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-cols li {
    margin-bottom: 10px;
}
.footer-cols a {
    color: rgba(255, 255, 255, .68);
    font-size: 14px;
    transition: color .2s, padding-left .2s;
}
.footer-cols a:hover {
    color: #fff;
    padding-left: 4px;
}
.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    color: rgba(255, 255, 255, .68);
    font-size: 14px;
    line-height: 1.7;
}
.footer-contact i {
    width: 24px;
    height: 24px;
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-size: 12px;
    flex-shrink: 0;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    max-width: var(--container);
    margin: 0 auto;
    padding: 18px 20px;
    font-size: 13px;
    color: rgba(255, 255, 255, .46);
    text-align: center;
}

/* Responsive */
@media (max-width: 1023.98px) {
    .nav-toggle {
        display: block;
    }
    .site-nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 72px;
        background: #fff;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px 22px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 20px 30px rgba(28, 64, 93, .08);
    }
    .site-nav.is-open {
        display: flex;
    }
    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 2px;
    }
    .nav-menu a {
        padding: 13px 10px;
        border-radius: 10px;
    }
    .nav-menu li.is-active a::after {
        left: 44px;
        width: 24px;
        right: auto;
    }
    .nav-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        border-top: 1px solid var(--border);
        padding-top: 16px;
        margin-top: 8px;
        gap: 10px;
    }
    .nav-login,
    .nav-cta {
        justify-content: center;
    }
    .topic-nav {
        top: 72px;
    }
    .hero-inner {
        padding: 36px 0 52px;
    }
    .faq-content {
        padding-left: 0;
        margin-top: 36px;
    }
    .faq-side {
        padding-top: 0;
    }
    .section {
        padding: 64px 0;
    }
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}
@media (max-width: 767.98px) {
    .header-inner {
        height: 64px;
    }
    .brand-mark {
        width: 34px;
        height: 34px;
        border-radius: 9px;
    }
    .brand-name {
        font-size: 17px;
    }
    .site-nav {
        top: 64px;
    }
    .topic-nav {
        top: 64px;
        overflow-x: auto;
        scrollbar-width: none;
    }
    .topic-nav::-webkit-scrollbar {
        display: none;
    }
    .topic-nav-inner {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 12px;
    }
    .topic-chip {
        white-space: nowrap;
    }
    .section {
        padding: 52px 0;
    }
    .section-head h2,
    .faq-heading {
        font-size: 27px;
    }
    .hero-copy h1 {
        font-size: 34px;
    }
    .hero-copy p {
        font-size: 16px;
    }
    .hero-art {
        margin-top: 40px;
    }
    .float-chip {
        padding: 8px 12px;
        font-size: 12px;
    }
    .chip-guide {
        left: 8px;
        bottom: -18px;
    }
    .chip-online {
        right: 6px;
    }
    .hero-facts {
        margin-top: 22px;
    }
    .faq-group-title {
        font-size: 19px;
    }
    .faq-accordion .accordion-title {
        font-size: 15px;
        padding: 17px 48px 17px 16px;
    }
    .faq-accordion .accordion-content {
        font-size: 14.5px;
        padding: 14px 16px 18px;
    }
    .support-card {
        padding: 22px 20px;
    }
    .cta-band {
        padding: 40px 22px;
        border-radius: 18px;
    }
    .cta-band h2 {
        font-size: 24px;
    }
    .cta-band > p {
        font-size: 15px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-bottom: 24px;
    }
    .footer-desc {
        max-width: 100%;
    }
}
@media (max-width: 520px) {
    .brand-name {
        font-size: 16px;
    }
    .nav-toggle span {
        width: 20px;
        margin: 4.5px auto;
    }
    .nav-cta,
    .nav-login {
        min-height: 42px;
    }
    .hero-copy h1 {
        font-size: 28px;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .hero-note {
        margin-top: 10px;
    }
    .hero-facts li {
        width: 100%;
    }
    .support-card {
        min-height: 0;
    }
}