/* roulang page: index */
:root{
  --c-primary:#1F6FA8;
  --c-primary-dark:#0F527E;
  --c-accent:#DF6E48;
  --c-ok:#2C8A6B;
  --c-warn:#C98A2B;
  --c-danger:#C33C36;
  --c-bg:#F6FAFC;
  --c-alt-bg:#EDF4F9;
  --c-text:#1F2B36;
  --c-text-soft:#5B6F7E;
  --c-muted:#8496A3;
  --c-white:#fff;
  --c-border:#DCE8F0;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(20,40,60,.05), 0 10px 24px rgba(20,60,90,.08);
  --shadow-md:0 12px 28px rgba(20,60,90,.10);
  --shadow-lg:0 20px 40px rgba(20,60,90,.16);
  --container:1200px;
  --section-space:92px;
  --header-h:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.text-center{text-align:center}
.section{padding:var(--section-space) 0}
.section--tint{background:var(--c-white)}
.section--light{background:var(--c-alt-bg)}
.section-header{max-width:800px;margin-bottom:40px}
.section-header.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);background:rgba(31,111,168,.08);padding:5px 14px;border-radius:100px;margin-bottom:14px}
.section-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.section-title{font-size:clamp(26px,3vw,32px);line-height:1.4;font-weight:700;letter-spacing:-.2px;color:var(--c-text)}
.section-desc{margin-top:12px;color:var(--c-text-soft);font-size:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-weight:600;font-size:15px;line-height:1.2;border:1px solid transparent;
  cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:rgba(255,255,255,.6)}
.btn-outline:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#c95a38;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--c-primary);
  transition:color .2s;
}
.text-link svg{transition:transform .2s}
.text-link:hover{color:var(--c-accent)}
.text-link:hover svg{transform:translateX(4px)}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-border);
  height:var(--header-h);
}
.header-inner{display:flex;align-items:center;height:var(--header-h);gap:24px}
.brand{display:inline-flex;align-items:baseline;flex-shrink:0;transition:opacity .2s}
.brand:hover{opacity:.82}
.brand-main{font-size:21px;font-weight:800;color:var(--c-primary);letter-spacing:.5px}
.brand-sub{font-size:13px;font-weight:600;color:var(--c-text-soft);margin-left:6px;letter-spacing:.4px}
.main-nav{flex:1;display:flex;justify-content:center}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  display:inline-flex;align-items:center;gap:4px;padding:10px 13px;border-radius:8px;
  font-size:14.5px;font-weight:500;color:var(--c-text-soft);transition:all .2s;
}
.main-nav a:hover{color:var(--c-primary);background:rgba(31,111,168,.07)}
.main-nav a.active{color:var(--c-primary);background:rgba(31,111,168,.09);font-weight:600}
.header-cta{display:inline-flex;gap:10px;align-items:center;flex-shrink:0}

.tabbar{
  display:none;
}

.hero{
  position:relative;
  background:linear-gradient(103deg,rgba(246,250,252,.92) 0%,rgba(237,244,249,.78) 42%,rgba(220,232,240,.55) 100%),url('/assets/images/backpic/back-1.webp') no-repeat center/cover;
  border-bottom:1px solid var(--c-border);
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:74px 0 84px;
}
.eyebrow{
  display:inline-block;font-size:14px;font-weight:700;letter-spacing:2px;color:var(--c-accent);
  background:rgba(223,110,72,.12);padding:6px 16px;border-radius:100px;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(32px,4.4vw,50px);line-height:1.32;font-weight:800;color:var(--c-text);
  letter-spacing:-1px;
}
.hero-lead{
  margin-top:22px;font-size:18px;line-height:1.85;color:var(--c-text-soft);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{display:grid;grid-template-columns:auto 1fr;gap:10px 14px;margin-top:38px;padding-top:24px;border-top:1px solid rgba(255,255,255,.7);max-width:520px}
.hero-note-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--c-text-soft)}
.hero-note-icon{width:34px;height:34px;border-radius:10px;background:#fff;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}
.hero-note-icon svg{width:18px;height:18px;stroke:var(--c-primary)}
.hero-media{position:relative}
.hero-media .main-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  box-shadow:0 24px 60px rgba(31,111,168,.16);border:4px solid #fff;
}
.hero-media-badge{
  position:absolute;left:-18px;bottom:36px;background:#fff;border-radius:14px;
  box-shadow:var(--shadow-md);padding:14px 18px;display:flex;gap:12px;align-items:center;
}
.hero-media-badge strong{display:block;font-size:20px;line-height:1.2;color:var(--c-primary)}
.hero-media-badge span{font-size:12.5px;color:var(--c-text-soft)}
.trust-strip{background:var(--c-white);border-bottom:1px solid var(--c-border)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:24px 0}
.trust-item{display:flex;align-items:center;gap:14px;padding:6px 0}
.trust-icon{width:46px;height:46px;flex:0 0 46px;border-radius:12px;background:rgba(31,111,168,.08);display:flex;align-items:center;justify-content:center}
.trust-icon svg{width:24px;height:24px;stroke:var(--c-primary)}
.trust-title{font-size:15px;font-weight:700}
.trust-desc{font-size:13px;color:var(--c-muted);line-height:1.5}

.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:28px 0;
}
.feature-row + .feature-row{border-top:1px solid var(--c-border)}
.feature-media{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-sm)}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .6s ease}
.feature-media:hover img{transform:scale(1.03)}
.feature-media .img-float{
  position:absolute;left:18px;bottom:18px;background:rgba(15,82,126,.88);color:#fff;
  border-radius:100px;padding:6px 14px;font-size:13px;font-weight:600;
}
.feature-row.is-reverse .feature-media{order:2}
.feature-copy{order:1}
.feature-tag{color:var(--c-primary);font-weight:700;font-size:14px;letter-spacing:1px;display:inline-block;margin-bottom:10px}
.feature-copy h2,.feature-copy h3{font-size:clamp(22px,2.6vw,30px);line-height:1.4;margin-bottom:14px;font-weight:700;color:var(--c-text)}
.feature-copy p{color:var(--c-text-soft);margin-bottom:16px}
.check-list{display:grid;gap:10px;margin:16px 0 22px}
.check-list li{position:relative;padding-left:30px;font-size:15px;color:var(--c-text)}
.check-list li::before{
  content:"";position:absolute;left:0;top:4px;width:20px;height:20px;border-radius:50%;
  background:rgba(44,138,107,.12);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:8px;width:8px;height:5px;
  border-left:2px solid var(--c-ok);border-bottom:2px solid var(--c-ok);transform:rotate(-45deg);
}

.scenario-section{background:var(--c-alt-bg)}
.scenario-list{display:grid;gap:18px;counter-reset:scene}
.scenario-item{
  background:var(--c-white);border-radius:16px;box-shadow:var(--shadow-sm);
  padding:26px 30px;display:grid;grid-template-columns:64px 1fr auto;gap:20px;
  align-items:center;transition:box-shadow .25s,transform .25s;
}
.scenario-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.scenario-num{
  width:54px;height:54px;border-radius:16px;background:rgba(31,111,168,.08);
  color:var(--c-primary);font-weight:800;font-size:24px;display:flex;align-items:center;justify-content:center;
}
.scenario-item h3{font-size:19px;font-weight:700;margin-bottom:4px}
.scenario-item p{font-size:15px;color:var(--c-text-soft)}
.scenario-link{display:inline-flex;gap:8px;align-items:center;font-weight:600;font-size:14px;color:var(--c-accent)}
.scenario-link:hover{color:var(--c-primary)}

.case-feature{
  display:grid;grid-template-columns:1.2fr .8fr;overflow:hidden;border-radius:20px;
  background:var(--c-white);box-shadow:var(--shadow-sm);margin-bottom:24px;
}
.case-feature-copy{padding:44px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.case-feature-copy .kicker{color:var(--c-accent);font-weight:700;font-size:13px;margin-bottom:8px;letter-spacing:1px}
.case-feature-copy h3{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.45;margin-bottom:14px}
.case-feature-copy p{color:var(--c-text-soft);margin-bottom:20px}
.case-feature-img{min-height:300px;position:relative}
.case-feature-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.mini-case{
  background:var(--c-white);border-radius:16px;padding:26px;display:flex;gap:18px;
  align-items:flex-start;border:1px solid var(--c-border);box-shadow:var(--shadow-sm);
  transition:all .25s ease;
}
.mini-case:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.mini-case-icon{flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:rgba(223,110,72,.1);display:flex;align-items:center;justify-content:center}
.mini-case-icon svg{width:22px;height:22px;stroke:var(--c-accent)}
.mini-case h3{font-size:17px;font-weight:700;margin-bottom:4px}
.mini-case p{font-size:14px;color:var(--c-text-soft)}
.mini-case a.arrow-link{display:inline-flex;align-items:center;color:var(--c-primary);font-size:13px;font-weight:600;margin-top:8px}
.topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.topic-card{
  border-radius:16px;overflow:hidden;background:#fff;border:1px solid var(--c-border);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:all .25s ease;
}
.topic-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.topic-card-img{overflow:hidden;position:relative;aspect-ratio:3/2}
.topic-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.topic-card:hover .topic-card-img img{transform:scale(1.05)}
.topic-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.topic-body .badge{align-self:flex-start}
.topic-body h3{font-size:16px;font-weight:700;line-height:1.5}
.topic-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-primary)}
.badge{
  display:inline-flex;align-items:center;padding:3px 12px;border-radius:100px;
  background:rgba(31,111,168,.09);color:var(--c-primary);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge--warm{background:rgba(223,110,72,.1);color:var(--c-accent)}

.plans-section{background:var(--c-white)}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.plan-card{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:20px;
  padding:34px 30px;display:flex;flex-direction:column;position:relative;transition:all .25s;
  box-shadow:var(--shadow-sm);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.plan-card .plan-name{font-size:14px;font-weight:700;letter-spacing:1px;color:var(--c-muted);text-transform:uppercase}
.plan-card .plan-title{font-size:21px;font-weight:800;margin-top:10px}
.plan-card .plan-desc{margin-top:10px;color:var(--c-text-soft);font-size:14.5px}
.plan-divider{height:1px;background:var(--c-border);margin:22px 0}
.plan-card ul{display:grid;gap:10px;margin-bottom:28px;flex:1}
.plan-card li{position:relative;padding-left:24px;font-size:14px;color:var(--c-text)}
.plan-card li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--c-primary)}
.plan-card .btn{margin-top:auto}
.plan-card.is-featured{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 18px 40px rgba(31,111,168,.22)}
.plan-card.is-featured .plan-name{color:rgba(255,255,255,.68)}
.plan-card.is-featured .plan-desc{color:rgba(255,255,255,.78)}
.plan-card.is-featured .btn{background:#fff;color:var(--c-primary)}
.plan-card.is-featured .btn:hover{background:var(--c-alt-bg)}
.plan-card.is-featured li{color:#fff}
.plan-card.is-featured li::before{background:#fff}
.plan-card.is-featured .plan-divider{background:rgba(255,255,255,.25)}
.plan-hot{
  position:absolute;top:-12px;right:24px;background:var(--c-accent);color:#fff;
  padding:4px 14px;border-radius:100px;font-size:12px;font-weight:700;
}

.latest-section{background:var(--c-alt-bg)}
.news-layout{display:grid;grid-template-columns:420px 1fr;gap:24px;align-items:start}
.news-feature{
  background:var(--c-white);border-radius:20px;overflow:hidden;border:1px solid var(--c-border);
  box-shadow:var(--shadow-sm);
}
.news-feature-img img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-feature-body{padding:24px}
.news-feature-title{font-size:19px;line-height:1.55;font-weight:700;margin-bottom:10px}
.news-feature-title a:hover{color:var(--c-primary)}
.news-feature-text{font-size:14px;color:var(--c-text-soft);margin-bottom:18px}
.news-feed{display:grid;gap:14px}
.feed-card{
  display:block;background:#fff;border:1px solid var(--c-border);border-radius:16px;
  padding:20px 22px;box-shadow:var(--shadow-sm);transition:all .25s ease;
}
.feed-card:hover{box-shadow:var(--shadow-md);transform:translateX(4px);border-color:rgba(31,111,168,.4)}
.feed-card-top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:8px}
.feed-card-time{font-size:12.5px;color:var(--c-muted)}
.feed-card h3{font-size:17px;line-height:1.5;font-weight:700;margin-bottom:4px;transition:color .2s}
.feed-card:hover h3{color:var(--c-primary)}
.feed-card p{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{
  background:rgba(255,255,255,.78);border:1px dashed var(--c-border);border-radius:16px;
  padding:42px 30px;text-align:center;color:var(--c-text-soft);
}
.news-empty-title{font-size:18px;font-weight:700;color:var(--c-text);margin-bottom:4px}

.faq-list{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-border);background:#fff;border-radius:0}
.faq-item:first-child{border-top:1px solid var(--c-border)}
.faq-question{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  background:none;border:0;cursor:pointer;padding:26px 8px;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-text);transition:color .2s;
}
.faq-question:hover{color:var(--c-primary)}
.faq-item.is-open .faq-question{color:var(--c-primary)}
.faq-icon{flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:rgba(31,111,168,.1);display:flex;align-items:center;justify-content:center;position:relative;transition:transform .3s}
.faq-icon::before{content:"";width:10px;height:2px;background:var(--c-primary);border-radius:2px;display:block}
.faq-icon::after{content:"";position:absolute;width:2px;height:10px;background:var(--c-primary);border-radius:2px;transition:transform .3s}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;padding:0 28px}
.faq-answer-inner{padding-bottom:24px;color:var(--c-text-soft);font-size:15.5px}

.contact-section{
  background:
    linear-gradient(105deg,rgba(31,111,168,.96) 0%,rgba(15,82,126,.92) 70%),
    url('/assets/images/backpic/back-2.png') no-repeat right bottom / cover;
  color:#fff;
}
.contact-section .section-title{color:#fff}
.contact-section .section-desc{color:rgba(255,255,255,.82)}
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.contact-intro{display:grid;gap:18px}
.contact-intro h2{font-size:clamp(25px,2.6vw,32px);line-height:1.45}
.contact-intro p{color:rgba(255,255,255,.82);font-size:15.5px}
.contact-points{display:grid;gap:12px;margin-top:8px}
.contact-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.contact-points li svg{flex:0 0 18px;width:18px;height:18px;margin-top:5px;stroke:#8fd0ff}
.contact-form{
  background:#fff;border-radius:20px;padding:30px;color:var(--c-text);
  box-shadow:0 26px 60px rgba(5,35,50,.2);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--c-text)}
.form-label span{color:var(--c-accent);font-weight:500}
.form-control{
  width:100%;min-height:46px;border:1px solid var(--c-border);border-radius:10px;
  padding:10px 14px;background:var(--c-white);transition:all .2s;
}
textarea.form-control{resize:vertical;min-height:108px}
.form-control:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,168,.14);background:#fff}
.form-success{
  margin-top:14px;background:rgba(44,138,107,.09);border:1px solid rgba(44,138,107,.3);
  color:var(--c-ok);padding:12px 16px;border-radius:10px;font-size:14px;display:none;
}
.form-tip{font-size:12.5px;color:var(--c-muted);margin-top:12px}

.site-footer{background:#102630;color:#cdd9df;padding-top:64px}
.footer-top{display:grid;grid-template-columns:1.3fr .8fr .8fr .9fr;gap:44px;padding-bottom:46px}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:#9fb5bf}
.footer-brand p{font-size:14px;line-height:1.9;color:#9daeb6;margin-top:16px;max-width:300px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--c-accent);border-radius:2px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:#a9bac2;transition:all .2s}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#81959e}
.footer-bottom a{color:#a9bac2}
.footer-bottom a:hover{color:#fff}
.scroll-top-btn{
  position:fixed;right:22px;bottom:90px;z-index:45;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-border);background:#fff;color:var(--c-primary);cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all .2s;
}
.scroll-top-btn:hover{background:var(--c-primary);color:#fff}

@media (max-width:1024px){
  :root{--section-space:70px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:52px 0 60px}
  .hero-media .main-img{max-height:420px;object-fit:cover}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .case-feature{grid-template-columns:1fr}
  .topics-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr;max-width:600px;margin:0 auto}
  .plan-card.is-featured{order:-1}
  .news-layout{grid-template-columns:1fr}
  .news-feature{display:grid;grid-template-columns:.9fr 1.1fr}
  .news-feature-img,.news-feature-img img{height:100%}
  .contact-wrap{grid-template-columns:1fr;gap:28px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--header-h:60px;--section-space:56px}
  .site-header{height:var(--header-h)}
  .header-inner{height:var(--header-h)}
  .main-nav,.header-cta{display:none}
  .brand-main{font-size:19px}
  .tabbar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:70;
    height:calc(64px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.98);border-top:1px solid var(--c-border);
    box-shadow:0 -6px 24px rgba(20,45,65,.05);
  }
  .tabbar-item{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:4px;font-size:11.5px;color:var(--c-muted);font-weight:500;transition:color .2s;
  }
  .tabbar-item svg{width:22px;height:22px;stroke:currentColor}
  .tabbar-item.active,.tabbar-item:hover{color:var(--c-primary)}
  body{padding-bottom:72px}
  .hero h1{font-size:34px}
  .hero-lead{font-size:16px}
  .section-title{font-size:25px}
  .scenario-item{grid-template-columns:1fr;padding:24px;gap:14px}
  .scenario-num{width:48px;height:48px;font-size:21px;border-radius:12px}
  .case-feature-copy{padding:28px}
  .case-grid{grid-template-columns:1fr}
  .topics-grid{grid-template-columns:1fr}
  .news-feature{display:block}
  .news-layout{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .contact-form{padding:24px}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .scroll-top-btn{right:16px;bottom:84px}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .hero h1{font-size:29px;letter-spacing:-.4px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .trust-grid{grid-template-columns:1fr 1fr;gap:12px}
  .trust-item{flex-direction:column;align-items:flex-start;gap:8px}
  .min-case{flex-direction:column}
  .plan-grid{grid-template-columns:1fr}
  .topic-card h3{font-size:15px}
  .footer-top{grid-template-columns:1fr}
  .btn{width:100%}
  .text-link{width:auto}
  .section-kicker{line-height:1.5}
}

/* roulang page: article */
:root {
  --primary: #1F6FA8;
  --primary-dark: #0F527E;
  --primary-light: #E8F1F8;
  --accent: #DF6E48;
  --accent-light: #FDF0EB;
  --success: #2C8A6B;
  --warning: #C98A2B;
  --danger: #C33C36;
  --bg: #F6FAFC;
  --bg-alt: #EDF4F9;
  --white: #ffffff;
  --text: #22313A;
  --text-secondary: #4A5C69;
  --text-weak: #7A8C99;
  --border: #DCE8F0;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(20,40,60,.04), 0 4px 12px rgba(20,60,90,.06);
  --shadow: 0 1px 2px rgba(20,40,60,.04), 0 10px 24px rgba(20,60,90,.08);
  --shadow-lg: 0 8px 18px rgba(20,50,80,.1), 0 18px 32px rgba(20,60,90,.12);
  --shadow-accent: 0 6px 20px rgba(31,111,168,.25);
  --f-base: 16px;
  --f-xs: 13px;
  --f-sm: 14px;
  --f-lg: 20px;
  --f-xl: 26px;
  --f-2xl: 32px;
  --container: 1200px;
  --gap: 24px;
  --header-h: 72px;
  --footer-bg: #142A3B;
  --footer-text: #B9CDDA;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  font-size: var(--f-base);
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  padding-left: 0;
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

:focus-visible {
  outline: 3px solid rgba(31, 111, 168, .35);
  outline-offset: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .25s ease;
  border: 1px solid transparent;
  min-height: 44px;
  padding: 0 24px;
  font-size: var(--f-sm);
  white-space: nowrap;
  line-height: 1;
}

.btn-sm {
  min-height: 36px;
  padding: 0 18px;
  font-size: var(--f-xs);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  color: var(--white);
  box-shadow: 0 8px 24px rgba(15,82,126,.28);
}

.btn-outline {
  border: 1px solid var(--primary);
  color: var(--primary);
  background: rgba(31,111,168,.04);
}

.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(223,110,72,.28);
}

.btn-accent:hover {
  background: #C85A38;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(223,110,72,.35);
}

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(20,40,60,.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-direction: column;
  line-height: 1.2;
  gap: 1px;
  flex-shrink: 0;
}

.brand-main {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .5px;
}

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

.brand-sub {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 6px;
  color: var(--primary);
  padding-left: 6px;
  text-transform: none;
}

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 30px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 2px;
  position: relative;
  transition: color .2s;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width .25s ease;
}

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

.main-nav a:hover::after {
  width: 100%;
}

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

.main-nav a.active::after {
  width: 100%;
}

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

.mobile-bottom-nav {
  display: none;
}

.breadcrumb-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-inner a {
  color: var(--primary);
  font-weight: 400;
}

.breadcrumb-inner a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: #B7C6D0;
}

.breadcrumb-current {
  color: var(--text-weak);
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 420px;
}

/* ===== 文章页布局 ===== */
.article-main {
  padding: 56px 0 40px;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

.article-body-wrap {
  background: transparent;
}

.article-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px;
  border: 1px solid rgba(220,232,240,.6);
}

.article-category {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.article-meta .dot {
  width: 3px;
  height: 3px;
  background: #B7C6D0;
  border-radius: 50%;
}

.article-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-source i {
  font-style: normal;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  color: var(--text);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 28px 0 14px;
  color: var(--text);
  padding-left: 12px;
  border-left: 3px solid var(--primary);
  line-height: 1.5;
}

.article-body p {
  margin-bottom: 18px;
  color: #2D3E49;
  line-height: 2;
}

.article-body ul, .article-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
}

.article-body ul li {
  list-style: disc;
  margin-bottom: 8px;
  line-height: 1.9;
}

.article-body ol li {
  list-style: decimal;
  margin-bottom: 8px;
  line-height: 1.9;
}

.article-body a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(31,111,168,.4);
  font-weight: 500;
}

.article-body blockquote {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-secondary);
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body img {
  border-radius: var(--radius);
  margin: 24px 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-body table th {
  background: var(--primary-light);
  color: var(--text);
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--border);
}

.article-body table td {
  padding: 12px 14px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* 侧边栏 */
.article-sidebar {
  border-radius: var(--radius);
  transition: all .3s ease;
}

.sidebar-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  border: 1px solid rgba(220,232,240,.6);
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
  position: relative;
}

.sidebar-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 36px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.sidebar-list li {
  margin-bottom: 10px;
  padding-left: 16px;
  position: relative;
  font-size: 14px;
}

.sidebar-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 5px;
  height: 5px;
  background: var(--primary);
  border-radius: 50%;
  opacity: .5;
}

.sidebar-list li a {
  color: var(--text-secondary);
  transition: all .2s;
  line-height: 1.6;
}

.sidebar-list li a:hover {
  color: var(--primary);
  padding-left: 3px;
}

.sidebar-contact {
  background: var(--primary);
  color: var(--white);
  border: none;
  overflow: hidden;
  position: relative;
}

.sidebar-contact .sidebar-title {
  color: var(--white);
  border-bottom-color: rgba(255,255,255,.2);
}

.sidebar-contact .sidebar-title::after {
  background: var(--accent);
}

.sidebar-contact p {
  font-size: 14px;
  opacity: .92;
  margin-bottom: 18px;
  line-height: 1.7;
}

.content-not-found {
  padding: 120px 0;
  background: var(--bg);
  text-align: center;
}

.not-found-box {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 60px 40px;
  max-width: 600px;
  margin: 0 auto;
}

.not-found-icon {
  width: 72px;
  height: 72px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 32px;
}

.not-found-box h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

.not-found-box p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* 相关推荐 */
.recommend-section {
  margin-top: 48px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
  border: 1px solid rgba(220,232,240,.6);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h3 {
  font-size: 20px;
  font-weight: 700;
}

.section-header .more-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}

.section-header .more-link:hover {
  color: var(--primary-dark);
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.recommend-card {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .3s ease;
  display: block;
}

.recommend-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(31,111,168,.3);
}

.recommend-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--primary-light);
}

.recommend-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.recommend-card:hover .recommend-cover img {
  transform: scale(1.04);
}

.recommend-body {
  padding: 16px;
}

.recommend-tag {
  display: inline-block;
  font-size: 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  padding: 2px 10px;
  margin-bottom: 8px;
}

.recommend-body h4 {
  font-size: 15px;
  margin-bottom: 6px;
  line-height: 1.5;
  color: var(--text);
  font-weight: 600;
}

.recommend-body .recommend-meta {
  font-size: 12px;
  color: var(--text-weak);
}

/* ===== 返回链接区域 ===== */
.back-link-wrap {
  margin: 28px 0 16px;
  text-align: center;
}

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  border: 1px solid var(--border);
  background: var(--white);
  padding: 8px 20px;
  border-radius: 40px;
  transition: all .25s;
}

.back-home-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.back-home-link .arrow-left {
  font-size: 18px;
  line-height: 1;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 64px 0 32px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(95,155,190,.4), transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand .brand-main {
  color: var(--white);
}

.footer-brand .brand-sub {
  color: #A8CBDD;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: var(--footer-text);
  line-height: 1.8;
  max-width: 300px;
}

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

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

.footer-links a {
  color: var(--footer-text);
  font-size: 14px;
  line-height: 1.6;
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 3px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-size: 13px;
  color: #889BA9;
}

.footer-bottom a {
  color: inherit;
}

.footer-bottom a:hover {
  color: #A8CBDD;
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .sidebar-card {
    margin-bottom: 0;
  }

  .footer-top {
    grid-template-columns: 2fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 62px;
  }

  .main-nav,
  .header-cta {
    display: none;
  }

  .header-inner {
    justify-content: center;
  }

  .site-header {
    z-index: 99;
  }

  .article-main {
    padding: 24px 0 90px;
  }

  .article-card {
    padding: 24px 20px;
    border-radius: 10px;
  }

  .article-body-wrap .section-header h3 {
    font-size: 18px;
  }

  .article-body h2 {
    font-size: 20px;
    margin: 28px 0 12px;
  }

  .article-body h3 {
    font-size: 17px;
    margin: 24px 0 10px;
  }

  .article-body p {
    font-size: 15px;
    line-height: 1.9;
  }

  .article-body blockquote {
    padding: 12px 14px;
  }

  .article-body table {
    font-size: 12px;
  }

  .article-body table th,
  .article-body table td {
    padding: 8px;
  }

  .recommend-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .recommend-card {
    display: grid;
    grid-template-columns: 120px 1fr;
    align-items: center;
    max-height: 100%;
  }

  .recommend-card .recommend-cover {
    aspect-ratio: 1/1;
    height: 100%;
    min-height: 90px;
  }

  .article-sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .breadcrumb-current {
    max-width: 200px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 24px;
    justify-items: start;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--white);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 12px rgba(20,40,60,.06);
    z-index: 100;
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mobile-bottom-nav ul {
    display: flex;
    justify-content: space-around;
    align-items: stretch;
    flex: 1;
    gap: 0;
  }

  .mobile-bottom-nav ul li {
    flex: 1;
    align-items: center;
    justify-content: center;
    position: relative;
  }

  .mobile-bottom-nav ul li a {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    justify-content: center;
    height: 64px;
    width: 100%;
    text-align: center;
    font-size: 11px;
    color: #8A9AA6;
  }

  .mobile-bottom-nav ul li a:hover,
  .mobile-bottom-nav ul li a.active {
    color: var(--primary);
  }

  .mobile-bottom-nav ul li a i {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    font-size: 18px;
    font-style: normal;
  }

  .mobile-bottom-nav ul li:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 0;
    top: 18px;
    bottom: 18px;
    width: 1px;
    background: var(--border);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .brand-main {
    font-size: 22px;
  }

  .article-card {
    padding: 20px 16px;
  }

  .article-meta {
    gap: 10px;
    font-size: 12px;
  }

  .article-category {
    font-size: 12px;
  }

  .recommend-card {
    grid-template-columns: 100px 1fr;
  }

  .recommend-cover {
    height: 100% !important;
  }

  .recommend-body {
    padding: 12px 14px;
  }

  .recommend-body h4 {
    font-size: 14px;
  }

  .sidebar-card {
    padding: 18px 16px;
  }

  .sidebar-title {
    font-size: 16px;
  }

  .article-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }

  .not-found-box {
    padding: 40px 24px;
  }
}

/* roulang page: category1 */
:root{
  --primary:#1F6FA8;
  --primary-dark:#0F527E;
  --accent:#DF6E48;
  --green:#2C8A6B;
  --yellow:#C98A2B;
  --red:#C33C36;
  --bg:#F6FAFC;
  --surface:#FFFFFF;
  --soft:#EDF4F9;
  --line:#DCE8F0;
  --text:#1E2A32;
  --muted:#5E707C;
  --weak:#87939D;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 1px 2px rgba(20,40,60,.04), 0 10px 24px rgba(20,60,90,.08);
  --shadow-lg:0 14px 30px rgba(16,56,86,.14);
  --header-height:74px;
  --container:1200px;
}
*{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body,.site-footer,.mobile-bottom{
  padding:0;
}
img{
  max-width:100%;
  display:block;
}
a{
  color:var(--primary);
  text-decoration:none;
}
a:hover{
  color:var(--primary-dark);
}
button,input,select,textarea{
  font:inherit;
}
ul,ol,dl,p,figure,blockquote{
  margin:0;
}
h1,h2,h3,h4,h5{
  margin:0;
  font-weight:700;
  line-height:1.35;
}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{
  padding:96px 0;
}
.section.is-soft{
  background:#F0F7FB;
}
.section-head{
  max-width:860px;
  margin-bottom:44px;
}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  letter-spacing:1px;
  color:var(--primary);
  background:rgba(31,111,168,.1);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:16px;
}
.section-head h2{
  font-size:32px;
  color:var(--text);
  margin-bottom:12px;
}
.section-head p{
  color:var(--muted);
  font-size:16px;
}
.section-head .section-link{
  display:inline-block;
  margin-top:6px;
  font-weight:500;
}
.topic-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}

/* button */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-sm{
  min-height:38px;
  padding:0 16px;
  font-size:14px;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}
.btn-primary:hover{
  background:var(--primary-dark);
  border-color:var(--primary-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 18px rgba(31,111,168,.18);
}
.btn-outline{
  background:rgba(255,255,255,.8);
  color:var(--primary);
  border-color:#b9d2e2;
}
.btn-outline:hover{
  border-color:var(--primary);
  background:#fff;
}
.btn-accent{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn-accent:hover{
  background:#ca5c39;
  border-color:#ca5c39;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 20px rgba(223,110,72,.22);
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
summary:focus-visible{
  outline:3px solid rgba(31,111,168,.3);
  outline-offset:2px;
}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:var(--header-height);
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  line-height:1.2;
  flex-shrink:0;
}
.brand-main{
  font-size:24px;
  font-weight:800;
  color:var(--primary);
}
.brand-sub{
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  border-left:2px solid var(--line);
  padding-left:8px;
}
.main-nav{
  display:flex;
  align-items:center;
}
.main-nav ul{
  display:flex;
  list-style:none;
  gap:6px;
  margin:0;
  padding:0;
}
.main-nav a{
  display:inline-block;
  position:relative;
  padding:10px 15px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:500;
  color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.main-nav a:hover{
  color:var(--primary);
  background:rgba(31,111,168,.05);
}
.main-nav a.active{
  color:var(--primary-dark);
  background:rgba(31,111,168,.1);
  font-weight:600;
}
.main-nav a.active:after{
  content:"";
  position:absolute;
  left:15px;
  right:15px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.header-cta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}

/* mobile bottom fix */
.mobile-bottom{
  display:none;
}

/* hero */
.page-hero{
  position:relative;
  padding:88px 0 72px;
  overflow:hidden;
  background:
    radial-gradient(circle at 82% 28%, rgba(31,111,168,.16), rgba(31,111,168,.02) 40%),
    linear-gradient(180deg,#FFFFFF 0%,#EFF7FB 100%);
  border-bottom:1px solid var(--line);
}
.page-hero .breadcrumb{
  font-size:14px;
  color:var(--muted);
  margin-bottom:24px;
  display:flex;
  gap:6px;
}
.breadcrumb a{
  color:var(--primary);
  font-weight:500;
}
.breadcrumb .sep{
  color:var(--weak);
  margin:0 2px;
}
.hero-layout{
  display:grid;
  grid-template-columns:1.05fr .9fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{
  font-size:44px;
  line-height:1.2;
  color:var(--text);
  letter-spacing:.5px;
  margin-bottom:18px;
}
.hero-lead{
  font-size:18px;
  color:var(--muted);
  max-width:560px;
  line-height:1.85;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:24px 0 32px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 13px;
  border-radius:999px;
  background:rgba(31,111,168,.08);
  color:var(--primary-dark);
  border:1px solid rgba(31,111,168,.14);
  font-size:13px;
  font-weight:500;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-note{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  font-size:13px;
  color:var(--weak);
}
.hero-note svg,
.hero-note.dot{
  color:var(--accent);
}
.hero-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-lg);
  padding:26px;
  position:relative;
}
.hero-card:before{
  content:"";
  position:absolute;
  right:-12px;
  top:-14px;
  width:80px;
  height:80px;
  background:url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
  border:4px solid #fff;
  border-radius:16px;
  box-shadow:var(--shadow);
  opacity:.92;
}
.hero-card .hero-card-label{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.5px;
  margin-bottom:16px;
}
.hero-card-list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:14px;
}
.hero-card-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  line-height:1.75;
  color:#33444f;
}
.hero-card-list li::before{
  content:"";
  flex:0 0 7px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
  margin-top:12px;
}

/* notice strip */
.health-notice{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.notice-inner{
  display:flex;
  align-items:center;
  gap:14px;
  padding:15px 0;
  overflow:hidden;
}
.notice-inner .pulse-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(223,110,72,.1);
  color:#bf4d2a;
  padding:5px 13px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
}
.notice-list{
  display:flex;
  gap:22px;
  list-style:none;
  margin:0;
  padding:0;
  white-space:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
}
.notice-list::-webkit-scrollbar{
  display:none;
}
.notice-list li a{
  position:relative;
  padding-left:16px;
  color:#5a6872;
  font-size:14.5px;
  transition:color .2s ease;
}
.notice-list li a::before{
  content:"·";
  position:absolute;
  left:0;
  color:var(--accent);
  font-size:22px;
  line-height:1;
  top:0;
}
.notice-list li a:hover{
  color:var(--primary);
}

/* topic card */
.topic-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.topic-card:hover{
  transform:translateY(-4px);
  border-color:#bfd7e6;
  box-shadow:var(--shadow-lg);
}
.topic-card .img-cover{
  aspect-ratio:16/9;
  object-fit:cover;
  width:100%;
  background:var(--soft);
}
.topic-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.topic-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--text);
}
.topic-body p{
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:4;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.topic-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-weight:600;
  font-size:14px;
}
.topic-link:hover{
  color:var(--accent);
}
.topic-link:hover svg{
  transform:translateX(3px);
}
.topic-link svg{
  transition:transform .2s ease;
}
.topic-tag{
  align-self:flex-start;
  font-size:12px;
  padding:2px 10px;
  border-radius:999px;
  background:rgba(31,111,168,.1);
  color:var(--primary-dark);
}

/* fresh note */
.note-scroll{
  display:grid;
  grid-auto-columns:minmax(285px,1fr);
  grid-auto-flow:column;
  gap:20px;
  overflow-x:auto;
  scrollbar-color:var(--line) transparent;
  scrollbar-width:thin;
  padding-bottom:8px;
}
.note-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:22px;
  min-height:205px;
  display:flex;
  flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease;
}
.note-card:hover{
  box-shadow:var(--shadow-lg);
  transform:translateY(-3px);
}
.note-card .note-index{
  color:var(--accent);
  font-size:13px;
  font-weight:700;
  margin-bottom:8px;
}
.note-card h3{
  font-size:17px;
  line-height:1.55;
  margin-bottom:10px;
}
.note-card h3 a{
  color:var(--text);
}
.note-card h3 a:hover{
  color:var(--primary);
}
.note-card p{
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
}

/* split double */
.double-panel{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:28px;
  align-items:stretch;
}
.panel-block{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:28px;
  box-shadow:var(--shadow);
}
.panel-block .panel-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  margin-bottom:20px;
}
.panel-title .num-badge{
  background:rgba(223,110,72,.1);
  color:#c85a3a;
  font-size:13px;
  padding:2px 9px;
  border-radius:6px;
}
.rank-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
}
.rank-list li{
  display:flex;
  align-items:flex-start;
  gap:15px;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
  transition:background .2s ease;
}
.rank-list li:last-child{
  border-bottom:0;
}
.rank-list li:hover{
  background:#FAFDFF;
}
.rank-no{
  font-size:22px;
  font-weight:800;
  color:rgba(31,111,168,.28);
  font-style:italic;
  width:34px;
  flex:0 0 34px;
  line-height:1.45;
}
.rank-list li:first-child .rank-no{
  color:var(--accent);
}
.rank-list li a{
  color:#35434d;
  font-weight:500;
  transition:color .2s ease;
}
.rank-list li a:hover{
  color:var(--primary);
}
.rank-list small{
  display:block;
  color:var(--weak);
  font-size:13px;
  font-weight:400;
}
.myth-box{
  display:grid;
  gap:16px;
}
.myth-item{
  background:#F4F9FC;
  border:1px solid #DCECF5;
  border-radius:14px;
  padding:18px 20px;
  transition:box-shadow .2s ease;
}
.myth-item:hover{
  box-shadow:var(--shadow);
}
.myth-title{
  display:flex;
  gap:9px;
  align-items:flex-start;
  font-weight:700;
  margin-bottom:7px;
  line-height:1.6;
}
.myth-title .badge-wrong{
  flex:0 0 auto;
  display:inline-block;
  background:rgba(195,60,54,.1);
  color:var(--red);
  font-size:12px;
  border-radius:6px;
  padding:2px 8px;
  margin-top:3px;
}
.myth-title .badge-right{
  flex:0 0 auto;
  display:inline-block;
  background:rgba(44,138,107,.1);
  color:var(--green);
  font-size:12px;
  border-radius:6px;
  padding:2px 8px;
  margin-top:3px;
}
.myth-item p{
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
  margin-top:6px;
}

/* 3 steps */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  counter-reset:step;
}
.flow-step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:30px 28px;
  position:relative;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.flow-step:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
}
.flow-step .step-index{
  width:48px;
  height:48px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:21px;
  font-weight:800;
  color:#fff;
  background:var(--primary);
  margin-bottom:20px;
}
.flow-step:nth-child(2) .step-index{
  background:var(--accent);
}
.flow-step:nth-child(3) .step-index{
  background:var(--green);
}
.flow-step h3{
  font-size:20px;
  margin-bottom:10px;
}
.flow-step p{
  color:var(--muted);
  font-size:15px;
}

/* crowd */
.crowd-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.crowd-card{
  background:var(--soft);
  border:1px solid var(--line);
  border-radius:16px;
  padding:24px;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.crowd-card:hover{
  transform:translateY(-3px);
  background:#fff;
  box-shadow:var(--shadow-lg);
}
.crowd-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  background:var(--primary);
  margin-bottom:16px;
}
.crowd-card:nth-child(2) .crowd-icon{
  background:var(--accent);
}
.crowd-card:nth-child(3) .crowd-icon{
  background:var(--green);
}
.crowd-card:nth-child(4) .crowd-icon{
  background:#8C6B4A;
}
.crowd-card h3{
  font-size:18px;
}
.crowd-card p{
  margin-top:7px;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.75;
}

/* faq */
.faq-panel{
  max-width:960px;
  margin:0 auto;
}
.faq-panel details{
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq-panel details:first-child{
  border-top:1px solid var(--line);
}
.faq-panel summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  position:relative;
  padding:24px 56px 24px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease;
}
.faq-panel summary::-webkit-details-marker{
  display:none;
}
.faq-panel summary::after{
  content:"+";
  position:absolute;
  right:4px;
  top:50%;
  transform:translateY(-50%);
  width:36px;
  height:36px;
  border-radius:50%;
  background:var(--soft);
  color:var(--primary);
  font-size:22px;
  font-weight:400;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.faq-panel details[open] summary{
  color:var(--primary);
}
.faq-panel details[open] summary::after{
  content:"−";
  background:rgba(31,111,168,.1);
  color:var(--primary-dark);
}
.faq-panel .faq-answer{
  padding:0 70px 24px 4px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.9;
}
.faq-panel .faq-answer a{
  font-weight:500;
}

/* contact */
.contact-layout{
  display:grid;
  grid-template-columns:.9fr 1.25fr;
  gap:64px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:22px;
  box-shadow:var(--shadow-lg);
  padding:48px;
}
.contact-intro h2{
  font-size:30px;
  margin-bottom:18px;
}
.contact-intro p{
  color:var(--muted);
  margin-bottom:18px;
}
.contact-tip{
  background:var(--soft);
  border-radius:12px;
  padding:16px 18px;
  color:#3d5260;
  font-size:14px;
  line-height:1.8;
}
.contact-form{
  display:grid;
  gap:16px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.form-field{
  display:grid;
  gap:7px;
}
.form-field label{
  font-weight:600;
  font-size:14px;
  color:#2b3c46;
}
.form-field .label-optional{
  font-weight:400;
  color:var(--weak);
}
.form-field input,
.form-field select,
.form-field textarea{
  width:100%;
  border:1px solid var(--line);
  background:#FBFCFE;
  border-radius:10px;
  padding:12px 14px;
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  border-color:var(--primary);
  outline:none;
  background:#fff;
  box-shadow:0 0 0 3px rgba(31,111,168,.1);
}
.form-field textarea{
  min-height:120px;
  resize:vertical;
}
.form-action{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
  margin-top:6px;
}
.form-action .form-note{
  font-size:13px;
  color:var(--weak);
}

/* footer */
.site-footer{
  background:#102330;
  color:#B7CBD8;
  margin-top:0;
}
.site-footer .container{
  padding-top:58px;
  padding-bottom:28px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.footer-top .brand .brand-main{
  color:#fff;
}
.footer-top .brand .brand-sub{
  color:#AFC5D5;
}
.footer-brand p{
  margin-top:16px;
  color:#AFC5D5;
  font-size:14px;
  line-height:1.9;
  max-width:320px;
}
.footer-title{
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  font-size:16px;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:9px;
}
.footer-links li a{
  color:#B7CBD8;
  font-size:14px;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links li a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 30px;
  color:#8FA6B6;
  font-size:13px;
  padding-top:22px;
}

/* responsive */
@media (max-width: 1180px){
  .topic-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .crowd-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width: 992px){
  .hero-layout{
    grid-template-columns:1fr;
    gap:30px;
  }
  .hero-card{
    max-width:680px;
  }
  .double-panel{
    grid-template-columns:1fr;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:30px;
  }
  .contact-layout{
    grid-template-columns:1fr;
    padding:34px;
    gap:36px;
  }
}
@media (max-width: 820px){
  .section{
    padding:64px 0;
  }
  .site-header .main-nav,
  .site-header .header-cta{
    display:none;
  }
  .site-header{
    position:relative;
  }
  .header-inner{
    min-height:62px;
  }
  .mobile-bottom{
    display:flex;
    position:fixed;
    bottom:0;
    left:0;
    right:0;
    z-index:1100;
    height:60px;
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 -4px 16px rgba(0,0,0,.04);
    align-items:stretch;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-bottom a{
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    color:#667b89;
    font-size:11px;
    font-weight:500;
    transition:color .2s ease,background .2s ease;
  }
  .mobile-bottom a svg{
    width:21px;
    height:21px;
  }
  .mobile-bottom a.active{
    color:var(--primary);
    background:rgba(31,111,168,.04);
  }
  .site-footer{
    padding-bottom:0;
  }
  .site-footer .container{
    padding-bottom:74px;
  }
  .footer-bottom{
    flex-direction:column;
  }
}
@media (max-width: 640px){
  .hero-copy h1{
    font-size:31px;
  }
  .hero-lead{
    font-size:16px;
  }
  .section-head h2{
    font-size:25px;
  }
  .topic-grid,
  .crowd-grid{
    grid-template-columns:1fr;
  }
  .flow-grid{
    grid-template-columns:1fr;
  }
  .footer-top{
    grid-template-columns:1fr;
  }
  .contact-layout{
    padding:24px;
    gap:26px;
  }
  .form-row{
    grid-template-columns:1fr;
  }
  .topic-body p{
    -webkit-line-clamp:3;
  }
  .website-tip{
    font-size:13px;
  }
}

/* roulang page: category2 */
:root{
  --primary:#1f6fa8;
  --primary-dark:#0f527e;
  --primary-light:#e7f1f8;
  --accent:#df6e48;
  --accent-deep:#c25731;
  --accent-light:#fce9e2;
  --bg:#f6fafc;
  --panel:#ffffff;
  --panel-2:#edf4f9;
  --border:#dce8f0;
  --border-strong:#c3d9e7;
  --text:#1e3345;
  --muted:#5c7a91;
  --white:#ffffff;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(20,40,60,.04),0 6px 14px rgba(20,60,90,.06);
  --shadow-md:0 4px 14px rgba(20,60,90,.08),0 18px 36px rgba(20,60,90,.08);
  --shadow-hover:0 10px 24px rgba(31,111,168,.14),0 22px 40px rgba(20,60,90,.10);
  --footer-bg:#102b3f;
  --footer-text:#d5e5f0;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
}
img{
  max-width:100%;
  display:block;
}
a{
  color:inherit;
  text-decoration:none;
}
ul,ol{
  margin:0;
  padding:0;
  list-style:none;
}
button,input,textarea,select{font:inherit}
p{margin:0 0 1rem}
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
section{display:block}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important}
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(8px);
}
.header-inner{
  display:flex;
  align-items:center;
  min-height:72px;
  gap:22px;
}
.brand{
  display:flex;
  align-items:baseline;
  gap:8px;
  flex-shrink:0;
}
.brand-main{
  font-size:24px;
  font-weight:800;
  letter-spacing:.5px;
  color:var(--primary);
}
.brand-sub{
  font-size:13px;
  color:var(--muted);
  font-weight:600;
  border-left:1px solid var(--border-strong);
  padding-left:8px;
  line-height:1.2;
}
.main-nav{
  margin-left:auto;
}
.main-nav ul{
  display:flex;
  gap:4px;
}
.main-nav a{
  display:block;
  padding:8px 14px;
  border-radius:8px;
  font-weight:500;
  color:#33546b;
  font-size:15px;
  transition:background .2s,color .2s;
}
.main-nav a:hover{
  background:var(--primary-light);
  color:var(--primary);
}
.main-nav a.active{
  background:var(--primary);
  color:#fff;
}
.header-cta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:8px;
  border:1px solid transparent;
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(31,111,168,.22);
}
.btn-outline{
  background:#fff;
  border-color:var(--border-strong);
  color:var(--primary);
}
.btn-outline:hover{
  border-color:var(--primary);
  background:var(--primary-light);
  transform:translateY(-2px);
}
.btn-accent{
  background:var(--accent);
  color:#fff;
}
.btn-accent:hover{
  background:var(--accent-deep);
  transform:translateY(-2px);
  box-shadow:0 10px 22px rgba(223,110,72,.24);
}
.btn-sm{
  min-height:38px;
  padding:0 16px;
  font-size:14px;
}

/* Hero */
.cat-hero{
  background:var(--panel-2);
  padding:76px 0 64px;
  overflow:hidden;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .8fr;
  gap:68px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#fff;
  border:1px solid var(--border);
  padding:5px 14px;
  border-radius:999px;
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  margin-bottom:20px;
}
.cat-hero h1{
  margin:0 0 14px;
  font-size:clamp(34px,5vw,47px);
  line-height:1.25;
  color:var(--text);
  letter-spacing:-.5px;
}
.hero-lead{
  font-size:18px;
  color:#405f76;
  max-width:640px;
  margin:0;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin:32px 0 0;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:22px 36px;
  margin-top:32px;
  padding-top:22px;
  border-top:1px solid #d2e2ee;
}
.hero-meta li{
  display:flex;
  flex-direction:column;
  line-height:1.4;
  font-size:13px;
  color:var(--muted);
}
.hero-meta strong{
  font-size:22px;
  color:var(--primary);
  margin-bottom:2px;
}
.hero-visual{
  position:relative;
}
.visual-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow-md);
}
.visual-media{
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--panel-2);
}
.visual-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.visual-body{
  padding:16px 20px 20px;
}
.visual-title{
  font-size:17px;
  font-weight:700;
  margin:10px 0 6px;
  line-height:1.5;
}
.visual-body p{
  margin:0;
  color:var(--muted);
  font-size:14px;
  line-height:1.7;
}
.mini-visual-card{
  margin-top:16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px 18px;
  display:flex;
  gap:12px;
  align-items:flex-start;
  box-shadow:var(--shadow-sm);
}
.mini-visual-card i{
  color:var(--accent);
  font-size:20px;
  margin-top:4px;
}
.mini-visual-card p{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:var(--text);
}

/* Page Chips */
.chip-bar{
  background:#fff;
  border-bottom:1px solid var(--border);
}
.chips-inner{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  padding-top:14px;
  padding-bottom:14px;
  scrollbar-width:none;
}
.chips-inner::-webkit-scrollbar{display:none}
.chip-label{
  flex-shrink:0;
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  margin-right:6px;
}
.chip-link{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border-radius:999px;
  background:var(--bg);
  border:1px solid var(--border);
  color:var(--text);
  font-size:14px;
  font-weight:500;
  transition:all .2s;
}
.chip-link:hover{
  background:var(--primary-light);
  border-color:var(--primary);
  color:var(--primary);
  transform:translateY(-1px);
}

/* Section common */
.section{
  padding:96px 0;
}
.section-white{
  background:#fff;
}
.section-tint{
  background:var(--panel-2);
}
.section-head{
  max-width:780px;
  margin-bottom:44px;
}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--accent);
  font-size:14px;
  font-weight:700;
  letter-spacing:.4px;
  margin-bottom:12px;
}
.section h2{
  margin:0 0 14px;
  font-size:clamp(25px,2.6vw,31px);
  line-height:1.35;
  letter-spacing:-.3px;
}
.section-desc{
  margin:0;
  color:var(--muted);
  font-size:16px;
}
.tag{
  display:inline-block;
  border-radius:6px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  padding:3px 10px;
  line-height:1.5;
}
.tag-accent{
  background:var(--accent-light);
  color:var(--accent-deep);
}

/* Plans section */
.plans-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:30px;
  align-items:stretch;
}
.plans-feature{
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s,transform .25s;
}
.plans-feature:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.plans-feature-media{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--panel-2);
}
.plans-feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.plans-feature:hover .plans-feature-media img{
  transform:scale(1.03);
}
.plans-feature-body{
  padding:26px 28px 30px;
}
.plans-feature-body h3{
  margin:14px 0 10px;
  font-size:24px;
  line-height:1.4;
}
.plans-feature-body>p{
  color:var(--muted);
  margin:0 0 18px;
  font-size:15px;
}
.mini-check-list{
  display:grid;
  gap:10px;
}
.mini-check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:#425f74;
  font-size:15px;
}
.mini-check-list i{
  color:var(--primary);
  font-size:15px;
  margin-top:5px;
}
.plans-side{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.side-card{
  flex:1;
  display:flex;
  align-items:center;
  gap:14px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px 14px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s,transform .25s;
}
.side-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.side-thumb{
  flex-shrink:0;
  width:116px;
  aspect-ratio:4/3;
  border-radius:10px;
  overflow:hidden;
  background:var(--panel-2);
}
.side-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.side-copy{
  min-width:0;
}
.side-copy h3{
  margin:0 0 5px;
  font-size:17px;
  line-height:1.45;
}
.side-copy p{
  margin:0;
  color:var(--muted);
  font-size:13px;
  line-height:1.65;
}
.side-copy .mini-tag{
  margin-bottom:6px;
}

/* Audience section */
.audience-layout{
  display:grid;
  grid-template-columns:1.05fr .8fr;
  gap:50px;
  align-items:center;
}
.audience-copy .section-head{
  margin-bottom:26px;
}
.audience-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 34px;
}
.audience-list li{
  border-bottom:1px solid var(--border);
  padding:18px 0;
  display:flex;
  gap:14px;
}
.audience-list li:last-child:nth-child(odd){
  grid-column:1/-1;
}
.audience-list strong{
  display:block;
  font-size:17px;
  margin-bottom:4px;
  color:var(--text);
}
.audience-list p{
  margin:0;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}
.scene-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--accent);
  font-size:22px;
  font-weight:700;
  line-height:1;
  margin-top:2px;
}
.quote-card{
  background:#fff;
  border-radius:18px;
  border:1px solid var(--border);
  overflow:hidden;
  box-shadow:var(--shadow-md);
}
.quote-media{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--panel-2);
}
.quote-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.quote-inner{
  padding:22px 24px 24px;
}
.quote-inner blockquote{
  margin:0 0 14px;
  font-size:15px;
  line-height:1.85;
  color:#405f76;
}
.quote-source{
  margin:0;
  color:var(--muted);
  font-size:14px;
}

/* Method */
.method-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.method-card{
  position:relative;
  background:#fff;
  border-radius:14px;
  padding:26px 22px 24px;
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s,transform .25s,border-color .25s;
}
.method-card::before{
  content:"";
  position:absolute;
  top:0;
  left:22px;
  right:22px;
  height:4px;
  border-radius:0 0 4px 4px;
  background:var(--primary);
  opacity:.9;
}
.method-card:nth-child(2)::before{background:var(--accent)}
.method-card:nth-child(3)::before{background:#2c8a6b}
.method-card:nth-child(4)::before{background:#c98a2b}
.method-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-hover);
}
.method-step{
  font-size:26px;
  font-weight:800;
  color:var(--primary-light);
  margin-bottom:8px;
  line-height:1;
}
.method-card strong{
  display:block;
  font-size:18px;
  margin-bottom:7px;
  line-height:1.5;
}
.method-card p{
  margin:0;
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}

/* Related */
.related-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.related-card{
  display:flex;
  gap:20px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s,transform .25s;
}
.related-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.related-thumb{
  flex-shrink:0;
  width:180px;
  aspect-ratio:4/3;
  border-radius:12px;
  overflow:hidden;
  background:var(--panel-2);
}
.related-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.related-copy{
  min-width:0;
}
.related-copy h3{
  margin:0 0 8px;
  font-size:20px;
  line-height:1.4;
}
.related-copy p{
  margin:0;
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}
.related-copy .inline-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  color:var(--primary);
  font-weight:600;
  font-size:14px;
}
.related-copy .inline-link:hover{
  color:var(--primary-dark);
}

/* FAQ */
.faq-wrap{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border);
  position:relative;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:24px 40px 24px 0;
  font-size:17px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  color:var(--text);
  transition:color .2s;
  position:relative;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:15px;
  color:var(--muted);
  transition:transform .25s,color .2s;
  flex-shrink:0;
}
.faq-item[open] summary{
  color:var(--primary);
}
.faq-item[open] summary::after{
  transform:rotate(180deg);
  color:var(--primary);
}
.faq-body{
  padding:0 0 24px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  max-width:820px;
}
.faq-body p{
  margin:0 0 10px;
}
.faq-body p:last-child{
  margin-bottom:0;
}

/* CTA */
.cta-panel{
  background:var(--panel-2);
  border:1px solid var(--border);
  border-radius:22px;
  padding:48px 52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-panel .cta-copy h2{
  margin:6px 0 10px;
}
.cta-panel .cta-copy p{
  margin:0;
  color:var(--muted);
  max-width:620px;
}
.cta-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--accent-light);
  color:var(--accent-deep);
  font-weight:700;
  border-radius:999px;
  font-size:13px;
  padding:4px 13px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  flex-shrink:0;
}

/* Footer */
.site-footer{
  background:var(--footer-bg);
  color:var(--footer-text);
  padding:64px 0 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.55fr 1fr 1fr 1fr;
  gap:40px;
  margin-bottom:44px;
}
.site-footer .brand{
  align-items:baseline;
}
.site-footer .brand-main{
  color:#fff;
}
.site-footer .brand-sub{
  color:#9bbbcb;
  border-color:rgba(255,255,255,.15);
}
.footer-brand p{
  margin:18px 0 0;
  color:#a5c3d3;
  font-size:14px;
  max-width:330px;
  line-height:1.8;
}
.footer-title{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:14px;
}
.footer-links li{
  margin-bottom:8px;
}
.footer-links a{
  color:#a5c3d3;
  font-size:14px;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:8px 20px;
  flex-wrap:wrap;
  color:#8eb0c2;
  font-size:13px;
}

/* Mobile Tabbar */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:120;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--border);
  box-shadow:0 -6px 18px rgba(20,60,90,.06);
}
.tab-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  padding:9px 2px calc(7px + env(safe-area-inset-bottom));
  color:var(--muted);
  font-size:11px;
  font-weight:500;
  transition:color .2s;
}
.tab-item i{
  font-size:19px;
}
.tab-item:hover{
  color:var(--primary);
}
.tab-item.is-active{
  color:var(--primary);
  font-weight:700;
}

/* Responsive */
@media(max-width:1100px){
  .cat-hero-grid{
    grid-template-columns:1fr .9fr;
    gap:44px;
  }
  .related-thumb{
    width:150px;
  }
}
@media(max-width:960px){
  .main-nav,.header-cta{
    display:none;
  }
  .header-inner{
    justify-content:space-between;
  }
  .mobile-tabbar{
    display:flex;
  }
  body{
    padding-bottom:66px;
  }
  .cat-hero-grid{
    grid-template-columns:1fr;
  }
  .plans-layout{
    grid-template-columns:1fr;
  }
  .method-grid{
    grid-template-columns:1fr 1fr;
  }
  .audience-layout{
    grid-template-columns:1fr;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
  }
  .footer-brand{
    grid-column:1/-1;
  }
}
@media(max-width:768px){
  .section{
    padding:64px 0;
  }
  .cat-hero{
    padding:48px 0 44px;
  }
  .container{
    padding:0 18px;
  }
  .hero-actions .btn{
    width:auto;
    min-width:160px;
  }
  .audience-list{
    grid-template-columns:1fr;
    gap:0;
  }
  .audience-list li:last-child:nth-child(odd){
    grid-column:auto;
  }
  .related-grid{
    grid-template-columns:1fr;
  }
  .related-card{
    flex-direction:column;
    align-items:flex-start;
  }
  .related-thumb{
    width:100%;
    aspect-ratio:16/9;
  }
  .cta-panel{
    padding:34px 26px;
    flex-direction:column;
    align-items:flex-start;
  }
  .cta-actions .btn{
    flex:1;
  }
  .mini-visual-card{
    padding:14px 16px;
  }
}
@media(max-width:520px){
  .method-grid{
    grid-template-columns:1fr;
  }
  .hero-meta{
    gap:14px 20px;
  }
  .hero-meta li{
    flex:1 1 30%;
  }
  .plans-feature-body{
    padding:20px;
  }
  .side-card{
    flex-direction:column;
    align-items:stretch;
  }
  .side-thumb{
    width:100%;
    aspect-ratio:16/9;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:center;
    text-align:center;
  }
  .btn{
    min-height:48px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #1F6FA8;
  --primary-dark: #0F527E;
  --primary-light: #E5F0FA;
  --accent: #DF6E48;
  --accent-light: #FCF0EB;
  --green: #2C8A6B;
  --bg: #F6FAFC;
  --card: #ffffff;
  --alt-bg: #EDF4F9;
  --border: #DCE8F0;
  --text: #1F2F3A;
  --text-weak: #617888;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(20, 40, 60, .04), 0 12px 28px rgba(20, 60, 90, .07);
  --shadow-hover: 0 8px 18px rgba(31, 111, 168, .10), 0 24px 46px rgba(20, 60, 90, .13);
  --container: 1200px;
  --space: 96px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
body.menu-open {
  overflow: hidden;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--primary-dark);
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
button, input, textarea {
  font: inherit;
}
h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.35;
  font-weight: 700;
}
.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}
.section {
  padding: 84px 0;
}
.section-alt {
  background: var(--alt-bg);
}
.section-white {
  background: var(--card);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 14px;
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.section-head {
  max-width: 820px;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  margin-top: 14px;
  letter-spacing: .5px;
}
.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  margin-top: 12px;
  margin-bottom: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(31, 111, 168, .22);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #c95a38;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(223, 110, 72, .2);
}
.btn-outline {
  background: #F4F9FC;
  border-color: #BBD8EA;
  color: var(--primary);
}
.btn-outline:hover {
  background: #fff;
  border-color: var(--primary);
  color: var(--primary-dark);
}
.btn-sm {
  min-height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}
.brand-main {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: .5px;
  line-height: 1.2;
}
.brand-sub {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-weak);
  position: relative;
  padding-left: 10px;
}
.brand-sub::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 14px;
  background: var(--border);
  transform: translateY(-50%);
}
.main-nav {
  margin-left: auto;
}
.main-nav ul {
  display: flex;
  gap: 28px;
  align-items: center;
}
.main-nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  padding: 10px 4px;
  position: relative;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 4px 4px 0 0;
  background: var(--primary);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Mobile bottom nav */
.mobile-tabbar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1100;
  background: #fff;
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -10px 30px rgba(20, 50, 80, .06);
}
.mobile-tabbar .mob-nav {
  display: flex;
  align-items: stretch;
  height: 64px;
}
.mob-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-width: 0;
  color: #8296A8;
  font-size: 12px;
}
.mob-tab svg {
  width: 21px;
  height: 21px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mob-tab.active {
  color: var(--primary);
  font-weight: 600;
}
.mob-tab:hover {
  color: var(--primary);
}

/* Page hero */
.page-hero {
  position: relative;
  background:
    radial-gradient(circle at 12% 18%, rgba(31, 111, 168, .09), transparent 30%),
    radial-gradient(circle at 92% 22%, rgba(223, 110, 72, .06), transparent 32%),
    linear-gradient(180deg, #F1F8FC 0%, #F6FAFC 100%);
  padding: 84px 0 70px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  opacity: .08;
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: 60px;
  align-items: center;
}
.hero-copy .crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 20px;
  color: var(--text-weak);
  font-size: 14px;
}
.crumb-dot {
  width: 4px;
  height: 4px;
  background: #AEC8D8;
  border-radius: 50%;
}
.hero-copy h1 {
  font-size: clamp(36px, 5vw, 50px);
  color: #14344D;
  letter-spacing: 1px;
  margin: 14px 0 18px;
}
.hero-lead {
  font-size: 17px;
  max-width: 620px;
  color: #41566B;
  margin: 0 0 20px;
}
.hero-lead strong {
  color: var(--primary-dark);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-bottom: 26px;
  color: var(--text-weak);
  font-size: 14px;
}
.hero-tags span {
  position: relative;
  padding-left: 18px;
}
.hero-tags span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: var(--green);
}
.hero-tags span:last-child::before {
  background: var(--accent);
}
.hero-tags span:nth-child(2)::before {
  background: var(--primary);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-visual {
  position: relative;
}
.hero-figure {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  background: #fff;
}
.hero-figure img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 24px;
  box-shadow: inset 0 -60px 80px rgba(10, 30, 50, .14);
  pointer-events: none;
}
.float-card {
  position: absolute;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(220, 232, 240, .8);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow);
  z-index: 2;
}
.float-stat {
  left: 18px;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: #14344D;
}
.float-stat .num {
  font-size: 26px;
  color: var(--accent);
  font-weight: 800;
}
.float-label {
  right: 18px;
  top: 22px;
  color: var(--primary-dark);
  font-weight: 600;
  font-size: 13px;
}

/* Metrics strip */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 74px;
  position: relative;
  z-index: 2;
}
.metric {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.metric strong {
  display: block;
  font-size: 30px;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: .3px;
}
.metric span {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 4px;
}

/* Chips */
.nav-chip-wrap {
  padding: 8px 0 6px;
}
.chip-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 6px 2px;
  -webkit-overflow-scrolling: touch;
}
.chip-scroll::-webkit-scrollbar {
  display: none;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: #415D70;
  font-size: 14px;
  white-space: nowrap;
  transition: all .2s ease;
}
.chip:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-1px);
}
.chip i {
  font-style: normal;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

/* Cards: popular */
.card-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.topic-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .28s ease, box-shadow .28s ease, border .2s;
}
.topic-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: #C3D9E8;
}
.topic-media {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: var(--alt-bg);
}
.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.topic-card:hover .topic-media img {
  transform: scale(1.05);
}
.topic-badge {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(255,255,255,.94);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: var(--shadow);
}
.topic-body {
  padding: 20px 24px 22px;
}
.topic-body h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.topic-body h3 a {
  color: var(--text);
}
.topic-body h3 a:hover {
  color: var(--primary);
}
.topic-body p {
  margin: 0 0 16px;
  color: var(--text-weak);
  font-size: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.topic-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px dashed var(--border);
  padding-top: 13px;
  font-size: 13px;
  color: var(--text-weak);
}
.topic-read {
  font-weight: 600;
  color: var(--primary);
}

/* Guide group */
.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: 24px;
}
.guide-main {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: box-shadow .3s ease;
}
.guide-main:hover {
  box-shadow: var(--shadow-hover);
}
.guide-cover img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}
.guide-content {
  padding: 30px;
}
.guide-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}
.guide-content h3 {
  font-size: 23px;
  margin-bottom: 12px;
}
.guide-content > p {
  color: var(--text-weak);
  margin: 0 0 22px;
}
.guide-list {
  display: grid;
  gap: 12px;
}
.guide-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg);
  border-radius: 10px;
  transition: background .2s ease, transform .2s ease;
}
.guide-list li:hover {
  background: var(--primary-light);
  transform: translateX(4px);
}
.guide-list i {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #DCEAF4;
  color: var(--primary);
  font-style: normal;
  font-weight: 700;
  flex: none;
}
.guide-list .txt {
  flex: 1;
}
.guide-list .txt strong {
  display: block;
  color: var(--text);
  font-size: 15px;
}
.guide-list .txt small {
  color: var(--text-weak);
  font-size: 13px;
}
.guide-list .arr {
  color: #A0B4C5;
  font-weight: 700;
}
.side-topics {
  display: grid;
  gap: 24px;
}
.side-block {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px;
  transition: box-shadow .3s ease;
}
.side-block:hover {
  box-shadow: var(--shadow-hover);
}
.side-block h3 {
  font-size: 20px;
  margin-bottom: 14px;
  position: relative;
  padding-left: 16px;
}
.side-block h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: .3em;
  bottom: .3em;
  width: 5px;
  background: var(--accent);
  border-radius: 6px;
}
.side-list {
  display: grid;
  gap: 14px;
}
.side-list li {
  font-size: 15px;
  color: var(--text);
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--border);
  line-height: 1.6;
}
.side-list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}
.side-list li small {
  display: block;
  color: var(--text-weak);
  font-size: 13px;
  margin-top: 5px;
}
.side-link {
  display: inline-flex;
  margin-top: 12px;
  font-weight: 600;
  font-size: 14px;
}

/* Persona */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.persona-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.persona-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.persona-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
}
.persona-card:nth-child(2) .persona-icon {
  background: var(--accent-light);
  color: var(--accent);
}
.persona-card:nth-child(3) .persona-icon {
  background: #E6F3ED;
  color: var(--green);
}
.persona-card h3 {
  font-size: 20px;
}
.persona-card p {
  color: var(--text-weak);
  margin: 0;
}
.persona-note {
  margin-top: 22px;
  font-size: 14px;
  color: var(--text-weak);
  background: var(--alt-bg);
  border-radius: 10px;
  padding: 15px 18px;
}

/* Cross links */
.cross-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.cross-card {
  background: var(--primary);
  border-radius: var(--radius);
  color: #fff;
  padding: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 34px rgba(20, 70, 110, .18);
  transition: transform .3s ease, box-shadow .3s ease;
  display: block;
}
.cross-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 44px rgba(20, 70, 110, .24);
}
.cross-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
}
.cross-card.alt {
  background: var(--accent);
}
.cross-card h3 {
  font-size: 22px;
  color: #fff;
  margin: 6px 0 8px;
}
.cross-card p {
  margin: 0;
  color: rgba(255,255,255,.86);
  font-size: 15px;
  max-width: 80%;
}
.cross-card .go {
  margin-top: 18px;
  display: inline-flex;
  gap: 8px;
  background: rgba(255,255,255,.18);
  padding: 9px 18px;
  border-radius: 999px;
  color: #fff;
  font-weight: 600;
  font-size: 14px;
}

/* FAQ */
.faq-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 13px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow .25s ease;
}
.faq-item.open {
  box-shadow: var(--shadow);
  border-color: #BCD7E8;
}
.faq-summary {
  width: 100%;
  border: 0;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 15px;
  justify-content: space-between;
  text-align: left;
  padding: 20px 22px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  transition: color .2s ease;
}
.faq-summary:hover {
  color: var(--primary);
}
.faq-item.open .faq-summary {
  color: var(--primary);
}
.faq-icon {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s ease, background .3s ease;
  font-size: 17px;
  line-height: 1;
}
.faq-item.open .faq-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 24px 22px 24px;
  color: #51697B;
  font-size: 15px;
  border-top: 1px dashed var(--border);
  margin-top: 0;
}
.faq-item.open .faq-answer {
  display: block;
}
.faq-answer p {
  margin: 14px 0 0;
}

/* CTA */
.cta-panel {
  position: relative;
  background:
    linear-gradient(120deg, #123B57 0%, #1B5B85 55%, #257AA4 100%);
  border-radius: 24px;
  color: #fff;
  padding: 54px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(15, 55, 90, .24);
}
.cta-panel::before {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
}
.cta-panel::after {
  content: "";
  position: absolute;
  right: 40px;
  bottom: 20px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.12);
}
.cta-intro {
  position: relative;
  z-index: 2;
}
.cta-intro h2 {
  color: #fff;
  font-size: clamp(26px, 3vw, 36px);
  max-width: 760px;
}
.cta-intro p {
  color: rgba(255, 255, 255, .85);
  max-width: 680px;
  margin: 16px 0 28px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.cta-panel .btn-light {
  background: #fff;
  color: #14344D;
}
.cta-panel .btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 26px rgba(0, 0, 0, .2);
}
.cta-panel .btn-ghost-light {
  background: rgba(255,255,255,.14);
  color: #fff;
  border-color: rgba(255,255,255,.5);
}
.cta-panel .btn-ghost-light:hover {
  background: rgba(255,255,255,.22);
  color: #fff;
}

/* Footer */
.site-footer {
  background: #0E2637;
  color: #A9BCCB;
  margin-top: 90px;
}
.site-footer .container {
  padding-top: 64px;
  padding-bottom: 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.site-footer .brand .brand-main {
  color: #fff;
}
.site-footer .brand .brand-sub {
  color: #9CB6C8;
}
.site-footer .brand .brand-sub::before {
  background: rgba(255,255,255,.2);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin: 20px 0 0;
  max-width: 320px;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links {
  display: grid;
  gap: 12px;
}
.footer-links a {
  color: #A9BCCB;
  font-size: 14px;
  transition: color .2s ease, transform .2s ease;
  display: inline-flex;
  width: fit-content;
}
.footer-links a:hover {
  color: #fff;
  transform: translateX(3px);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  padding-top: 22px;
  font-size: 13px;
  color: #7C93A5;
}

@media (max-width: 1100px) {
  .main-nav ul {
    gap: 18px;
  }
  .main-nav a {
    font-size: 14px;
  }
  .hero-grid {
    gap: 40px;
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .main-nav,
  .header-cta {
    display: none;
  }
  .header-inner {
    justify-content: center;
  }
  .mobile-tabbar {
    display: block;
  }
  .page-hero {
    padding: 56px 0 52px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-figure img {
    height: 300px;
  }
  .metrics {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 40px;
  }
  .card-wrap,
  .guide-grid,
  .persona-grid,
  .cross-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 60px 0;
  }
  .cta-panel {
    padding: 36px 28px;
  }
  body {
    padding-bottom: 68px;
  }
}

@media (max-width: 600px) {
  .container {
    width: calc(100% - 36px);
  }
  .page-hero h1 {
    font-size: 34px;
  }
  .hero-actions .btn {
    flex: 1;
    min-width: 130px;
    padding: 0 16px;
  }
  .hero-figure img {
    height: 220px;
  }
  .float-stat {
    font-size: 13px;
    padding: 10px 14px;
  }
  .float-stat .num {
    font-size: 20px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }
  .footer-bottom span {
    display: block;
  }
}

@media (min-width: 901px) {
  .mobile-tabbar {
    display: none !important;
  }
}