/* roulang page: index */
:root{
  --primary:#1E5C9E;
  --primary-dark:#164A7E;
  --primary-light:#E9F1FA;
  --accent:#E08A2E;
  --accent-dark:#B96D1C;
  --accent-light:#FBF1E3;
  --text:#1C2B3A;
  --text-2:#5B6B7B;
  --line:#E3E9F0;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,40,70,.06);
  --sh-2:0 8px 24px rgba(20,40,70,.08);
  --sh-3:0 14px 34px rgba(20,40,70,.12);
  --tr:180ms ease-out;
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:PingFang SC,"Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--tr),background-color var(--tr),border-color var(--tr)}
a:hover{color:var(--primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700}
button{font:inherit;cursor:pointer}
input,textarea{font:inherit}
::selection{background:var(--primary-light);color:var(--primary-dark)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:72px 0}
.section--alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;
}
.eyebrow--accent{color:var(--accent-dark);background:var(--accent-light)}
h1{font-size:38px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:30px;line-height:1.35;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:17px;font-weight:600;line-height:1.5}
.lead{font-size:17px;color:var(--text-2);line-height:1.85}
.muted{color:var(--text-2);font-size:14px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;width:100%;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(20,40,70,.02);
  transition:box-shadow var(--tr);
}
body.is-scrolled .site-header{box-shadow:var(--sh-2)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:76px;transition:height var(--tr);
}
body.is-scrolled .header-inner{height:64px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-left .nav-list{justify-content:flex-start}
.nav-right .nav-list{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;font-size:15px;font-weight:500;color:var(--text);border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--tr);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:21px;font-weight:700;color:var(--text);letter-spacing:-.01em;
  padding:4px 8px;border-radius:12px;
}
.brand:hover{color:var(--primary)}
.brand svg{flex:0 0 auto;color:var(--primary)}
.brand em{font-style:normal;color:var(--accent)}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
  transition:transform var(--tr),top var(--tr),opacity var(--tr);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

.mobile-panel{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:70;
  background:#FFFFFF;border-top:1px solid var(--line);
  padding:8px 0 32px;overflow-y:auto;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr);
}
.mobile-panel.open{transform:none;opacity:1;visibility:visible}
.mobile-panel a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 24px;font-size:16px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-link:hover,.mobile-panel a.m-link.active{color:var(--primary)}
.mobile-panel a.m-link i{font-size:12px;color:var(--text-2)}
.mobile-panel .m-cta{padding:20px 24px 0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),box-shadow var(--tr),transform var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#FFFFFF;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--primary-dark);color:#FFFFFF;box-shadow:var(--sh-2);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#FFFFFF}
.btn-accent:hover{background:var(--accent-dark);color:#FFFFFF;box-shadow:var(--sh-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary-dark)}
.btn-ghost i{transition:transform var(--tr)}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--primary);background:none;border:0;padding:0}
.btn-link i{transition:transform var(--tr)}
.btn-link:hover i{transform:translateX(4px)}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--primary-light)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center right;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,248,251,.98) 0%,rgba(246,248,251,.95) 42%,rgba(246,248,251,.55) 72%,rgba(246,248,251,.25) 100%);
}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;min-height:552px;padding:64px 0}
.hero-copy{max-width:620px}
.hero h1{font-size:40px;line-height:1.24;margin-bottom:18px}
.hero h1 .hl{
  position:relative;z-index:1;white-space:nowrap;
}
.hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;
  background:rgba(224,138,46,.22);border-radius:4px;z-index:-1;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;letter-spacing:.04em;font-weight:600;
  color:var(--primary-dark);background:#FFFFFF;
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;box-shadow:var(--sh-1);
}
.pill i{color:var(--accent)}
.hero-media{position:relative}
.hero-media .frame{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);
  border:6px solid #FFFFFF;background:#FFFFFF;
}
.hero-media .frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float{
  position:absolute;left:-18px;bottom:-18px;
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:14px 18px;min-width:180px;
}
.hero-float strong{display:block;font-size:22px;color:var(--primary);font-weight:700;line-height:1.2}
.hero-float span{font-size:13px;color:var(--text-2)}

/* ---------- pain ---------- */
.pain-band{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pain-item{
  background:transparent;border-top:2px solid var(--line);
  padding:26px 4px 4px;transition:border-color var(--tr);
}
.pain-item:hover{border-color:var(--primary)}
.pain-num{
  display:block;font-size:38px;font-weight:700;line-height:1;
  color:var(--accent);letter-spacing:-.02em;margin-bottom:16px;
}
.pain-item h3{margin-bottom:10px}
.pain-item p{color:var(--text-2);font-size:15px;margin:0}

/* ---------- solution ---------- */
.solution-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.sol-list{margin-top:28px}
.sol-list li{
  padding:20px 0;border-top:1px solid var(--line);
  display:flex;gap:16px;align-items:flex-start;
}
.sol-list li:last-child{border-bottom:1px solid var(--line)}
.sol-list .num{
  flex:0 0 34px;height:34px;border-radius:10px;background:var(--primary-light);
  color:var(--primary);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.sol-list h4{margin-bottom:4px}
.sol-list p{margin:0;font-size:15px;color:var(--text-2)}
.sol-media{position:relative}
.sol-media img{border-radius:var(--r-lg);box-shadow:var(--sh-2);aspect-ratio:3/4;object-fit:cover;width:100%}
.sol-card{
  position:absolute;right:-16px;bottom:28px;width:190px;
  background:#FFFFFF;border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-card);box-shadow:var(--sh-3);padding:16px 18px;
}
.sol-card strong{display:block;font-size:16px;color:var(--text)}
.sol-card span{font-size:13px;color:var(--text-2)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh-1);transition:box-shadow var(--tr),transform var(--tr);
}
.stat:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat b{display:block;font-size:36px;font-weight:700;line-height:1.1;color:var(--primary);letter-spacing:-.02em}
.stat span{display:block;font-size:14px;color:var(--text-2);margin-top:8px}

/* ---------- cards / generic ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#C9DCF0}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--primary-light)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 24px}
.badge{
  display:inline-flex;align-items:center;
  font-size:13px;letter-spacing:.04em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  border-radius:var(--r-pill);padding:4px 12px;
}
.badge--accent{color:var(--accent-dark);background:var(--accent-light)}
.card-title{
  font-size:19px;font-weight:600;line-height:1.45;margin:14px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:15px;color:var(--text-2);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;border-top:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.card-foot .go{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-foot .go i{transition:transform var(--tr)}
.card:hover .card-foot .go i{transform:translateX(4px)}
a.card{display:block;color:var(--text)}
a.card:hover{color:var(--text)}

/* ---------- testimonials ---------- */
.quote-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.quote-col{display:grid;gap:24px}
.quote{
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:30px 32px;position:relative;
  display:flex;flex-direction:column;justify-content:space-between;
}
.quote::before{
  content:"“";position:absolute;top:6px;right:22px;
  font-size:70px;line-height:1;color:var(--primary-light);font-weight:700;
}
.quote p{font-size:16px;line-height:1.85;color:var(--text);margin:0 0 22px}
.quote .who{display:flex;align-items:center;gap:12px}
.quote .avatar{
  width:40px;height:40px;border-radius:50%;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:700;font-size:15px;
}
.quote .who strong{display:block;font-size:15px}
.quote .who span{font-size:13px;color:var(--text-2)}

/* ---------- cms posts ---------- */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.empty-state{
  text-align:center;padding:56px 24px;background:#FFFFFF;
  border:1px dashed var(--line);border-radius:var(--r-card);color:var(--text-2);
}
.empty-state p{margin:0 0 16px}
.section-foot{margin-top:40px;text-align:center}

/* ---------- category tiles ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.cat-tile{
  display:block;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-1);
  transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
}
.cat-tile:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#C9DCF0;color:var(--text)}
.cat-tile i{color:var(--primary);font-size:20px;margin-bottom:14px;display:block}
.cat-tile strong{display:block;font-size:16px;font-weight:600;margin-bottom:8px}
.cat-tile span{font-size:13px;color:var(--text-2);line-height:1.7}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#FFFFFF;border:1px solid var(--line);border-radius:12px;
  margin-bottom:14px;overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr);
}
.faq-item:hover{border-color:#C9DCF0}
.faq-item.open{border-color:var(--primary-light);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;text-align:left;padding:20px 22px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform var(--tr),opacity var(--tr);
}
.faq-icon::before{left:3px;right:3px;top:9px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:9px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out}
.faq-a p{padding:0 22px 22px;margin:0;font-size:15px;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{background:var(--primary);color:#FFFFFF;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border:2px solid rgba(255,255,255,.18);border-radius:50%;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;padding:64px 0}
.cta-band h2{color:#FFFFFF;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:16px;max-width:620px}
.cta-band .btn-accent{box-shadow:0 8px 24px rgba(0,0,0,.16)}

/* ---------- footer ---------- */
.site-footer{background:#FFFFFF;border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .brand{font-size:19px;padding:0;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:0;max-width:300px}
.footer-col h4{font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:12px;display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:13px}
.footer-form{display:flex;gap:10px;margin-top:16px}
.footer-form input{
  flex:1;height:44px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:var(--bg);color:var(--text);font-size:14px;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.footer-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,92,158,.12);background:#FFFFFF}
.footer-form button{height:44px;padding:0 18px}
.form-note{font-size:13px;color:var(--text-2);margin-top:10px}
.form-note.ok{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:18px}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 20px}
  h1{font-size:32px}
  .hero h1{font-size:33px}
  h2{font-size:26px}
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:44px 1fr 44px;height:64px}
  body.is-scrolled .header-inner{height:60px}
  .brand{grid-column:2;justify-self:center;font-size:19px}
  .nav-toggle{display:inline-flex;grid-column:3;justify-self:end}
  .hero-inner{min-height:auto;padding:52px 0 64px}
  .hero-media{margin-top:36px}
  .hero-float{left:auto;right:12px;bottom:-16px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:1fr;gap:36px}
  .sol-media img{aspect-ratio:16/10}
  .sol-card{right:16px;bottom:-18px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .posts-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;padding:52px 0}
  .cta-inner .btn{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec:56px}
  body{font-size:15.5px}
  .container{padding:0 16px}
  h1{font-size:26px;line-height:1.3}
  .hero h1{font-size:27px}
  h2{font-size:23px}
  h3{font-size:19px}
  .section-head{margin-bottom:32px}
  .pain-grid{grid-template-columns:1fr;gap:8px}
  .pain-item{padding:20px 2px 6px}
  .pain-num{font-size:30px;margin-bottom:10px}
  .stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat{padding:20px 16px}
  .stat b{font-size:28px}
  .posts-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-inner .btn{width:100%}
  .quote{padding:24px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .footer-form{flex-direction:column}
  .footer-form button{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .card-media{aspect-ratio:16/9}
}
@media (max-width:520px){
  .hero h1 .hl::after{height:8px}
  .stats{grid-template-columns:1fr}
  .sol-card{position:static;width:100%;margin-top:16px}
  .hero-float{position:static;margin-top:16px;left:auto;right:auto;bottom:auto}
}

/* roulang page: article */
:root{
  --c-primary:#1E5C9E;
  --c-primary-dark:#164A7E;
  --c-primary-soft:#E9F1FA;
  --c-accent:#E08A2E;
  --c-accent-soft:#FDF1E3;
  --c-ink:#1C2B3A;
  --c-ink-2:#5B6B7B;
  --c-line:#E3E9F0;
  --c-bg:#F6F8FB;
  --c-card:#FFFFFF;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,40,70,.06);
  --sh-2:0 8px 24px rgba(20,40,70,.08);
  --sh-3:0 14px 34px rgba(20,40,70,.12);
  --sp-block:104px;
  --tr:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);line-height:1.35;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  transition:height var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  min-height:76px;
  transition:min-height var(--tr);
}
.site-header.is-scrolled .header-inner{min-height:64px;}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  color:var(--c-primary);font-weight:700;font-size:21px;letter-spacing:.01em;
  justify-self:center;white-space:nowrap;
}
.brand svg{flex:0 0 auto;}
.brand em{font-style:normal;color:var(--c-ink);}
.brand:hover{color:var(--c-primary-dark);}
.nav-left{justify-self:start;}
.nav-right{justify-self:end;display:flex;align-items:center;gap:18px;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list li{list-style:none;}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--tr);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.menu-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;
}
.menu-toggle i{font-size:17px;}
.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  max-height:0;overflow:hidden;
  transition:max-height 240ms ease-out;
}
.mobile-panel.is-open{max-height:560px;}
.mobile-panel .m-link{
  display:block;line-height:52px;padding:0 24px;font-size:15px;font-weight:500;
  border-bottom:1px solid var(--c-line);color:var(--c-ink);
}
.mobile-panel .m-link.active{color:var(--c-primary);font-weight:700;}
.mobile-panel .m-cta{padding:16px 24px 22px;}
.mobile-panel .m-cta .btn{display:block;width:100%;}
.overlay{
  position:fixed;inset:0;background:rgba(17,32,51,.45);
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:55;
}
.overlay.is-open{opacity:1;visibility:visible;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border-radius:var(--r-btn);
  border:1.5px solid transparent;cursor:pointer;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),box-shadow var(--tr),transform var(--tr);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:14px;
}
.btn-text i{transition:transform var(--tr);}
.btn-text:hover i{transform:translateX(4px);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.04em;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-soft);color:#B86A15;}

/* 面包屑 */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--c-ink-2);padding:14px 0;
}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#B7C3D0;}
.crumb .current{color:var(--c-ink-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头 */
.article-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(246,248,251,.86),rgba(246,248,251,.97)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.article-hero .inner{max-width:820px;padding:56px 0 48px;}
.article-hero h1{
  font-size:38px;line-height:1.28;font-weight:700;letter-spacing:.01em;
  margin:18px 0 0;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:22px;font-size:14px;color:var(--c-ink-2);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--c-primary);}

/* 文章主体 */
.article-wrap{padding:56px 0 var(--sp-block);}
.article-shell{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:40px;justify-content:center;align-items:start;
}
.article-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:40px 44px;
}
.article-body{font-size:16.5px;line-height:1.9;color:var(--c-ink);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:27px;line-height:1.35;margin:2em 0 .7em;padding-left:14px;
  border-left:4px solid var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:21px;margin:1.6em 0 .6em;}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.2em;}
.article-body ul li{list-style:disc;line-height:1.75;margin-bottom:.5em;}
.article-body ol li{list-style:decimal;line-height:1.75;margin-bottom:.5em;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--c-primary);background:var(--c-primary-soft);
  border-radius:0 var(--r-card) var(--r-card) 0;color:#2B3E52;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-lg);margin:26px auto;box-shadow:var(--sh-1);}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--c-primary-soft);font-weight:600;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(30,92,158,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body code{
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:6px;
  padding:2px 6px;font-size:14px;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}
.empty-state{
  text-align:center;padding:56px 20px;
}
.empty-state i{font-size:34px;color:var(--c-primary);margin-bottom:14px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--c-ink-2);margin-bottom:22px;font-size:15px;}

/* 文末 */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--c-line);
}
.tag-row .label{font-size:14px;color:var(--c-ink-2);margin-right:2px;}
.tag{
  display:inline-flex;padding:5px 13px;border-radius:var(--r-pill);
  font-size:13px;background:var(--c-bg);border:1px solid var(--c-line);color:var(--c-ink-2);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:26px;padding-top:22px;border-top:1px solid var(--c-line);
}

/* 侧栏 */
.side-stack{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--c-accent);font-size:14px;}
.side-card p{font-size:14px;color:var(--c-ink-2);line-height:1.8;}
.side-list li{border-bottom:1px solid var(--c-line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--c-ink);
}
.side-list a i{color:#B7C3D0;font-size:12px;transition:transform var(--tr),color var(--tr);}
.side-list a:hover{color:var(--c-primary);}
.side-list a:hover i{color:var(--c-primary);transform:translateX(3px);}
.side-cta{
  background:linear-gradient(150deg,var(--c-primary) 0%,#2A6DB4 100%);
  border:0;color:#fff;
}
.side-cta h3{color:#fff;}
.side-cta p{color:rgba(255,255,255,.85);margin-bottom:16px;}
.side-cta .btn{
  display:block;width:100%;background:#fff;color:var(--c-primary);border-color:#fff;
}
.side-cta .btn:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}

/* 通用板块 */
.section{padding:var(--sp-block) 0;}
.section-head{max-width:680px;margin-bottom:44px;}
.section-head h2{font-size:30px;letter-spacing:.01em;}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:16px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-accent);font-weight:700;margin-bottom:12px;
}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}

/* 卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#BFD5EA;}
.thumb{
  position:relative;aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.post-card:hover .thumb img{transform:scale(1.04);}
.thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--c-primary);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body .desc{
  font-size:14.5px;color:var(--c-ink-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-ink-2);
}

/* CTA 带 */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary) 0%,#2C71B8 100%);
  color:#fff;border-radius:var(--r-lg);padding:52px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:28px;}
.cta-band p{color:rgba(255,255,255,.86);margin-top:12px;font-size:15.5px;max-width:62ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-white{background:#fff;color:var(--c-primary);border-color:#fff;}
.cta-band .btn-white:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-2px);}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.72);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);border-color:#fff;}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:64px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;}
.footer-brand .brand{justify-self:flex-start;font-size:19px;margin-bottom:14px;display:inline-flex;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);line-height:1.85;max-width:34ch;}
.footer-col h4{font-size:15.5px;margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--c-ink-2);}
.footer-col ul a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:var(--c-primary);margin-top:6px;font-size:13px;}
.footer-form{display:flex;gap:10px;margin-top:8px;}
.footer-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border:1px solid var(--c-line);
  border-radius:var(--r-btn);background:#fff;color:var(--c-ink);transition:border-color var(--tr),box-shadow var(--tr);
}
.footer-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,92,158,.14);}
.footer-form .btn{white-space:nowrap;padding:0 20px;height:44px;}
.form-note{font-size:13px;color:var(--c-ink-2);margin-top:10px;}
.form-note.ok{color:var(--c-primary);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13.5px;color:var(--c-ink-2);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.footer-bottom .legal a:hover{color:var(--c-primary);}

/* 响应式 */
@media (max-width:1023px){
  :root{--sp-block:72px;}
  .container{padding:0 20px;}
  .nav-left,.nav-right .nav-list,.nav-right .btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .brand{font-size:19px;}
  .nav-right{justify-self:end;}
  .mobile-panel{display:block;}
  .article-shell{grid-template-columns:minmax(0,1fr);}
  .side-stack{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .article-hero .inner{padding:44px 0 38px;}
  .article-hero h1{font-size:30px;}
}
@media (max-width:767px){
  :root{--sp-block:56px;}
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .brand{font-size:17.5px;}
  .brand svg{width:21px;height:21px;}
  .article-hero h1{font-size:25px;line-height:1.35;}
  .article-card{padding:26px 20px;border-radius:var(--r-card);}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:19px;}
  .section-head h2{font-size:23px;}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .cta-band{padding:32px 22px;border-radius:var(--r-card);}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-wrap{padding:32px 0 56px;}
  .crumb .current{max-width:100%;white-space:normal;}
}
@media (max-width:519px){
  .article-hero h1{font-size:22px;}
  .meta-row{gap:12px;font-size:13px;}
}

/* roulang page: category1 */
:root{
  --brand:#1E5C9E;
  --brand-dark:#164A7E;
  --brand-light:#E9F1FA;
  --brand-line:#BBD2EA;
  --accent:#E08A2E;
  --accent-dark:#B96E1C;
  --text:#1C2B3A;
  --muted:#5B6B7B;
  --line:#E3E9F0;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --radius-btn:10px;
  --radius-card:14px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,40,70,.06);
  --shadow-2:0 8px 24px rgba(20,40,70,.08);
  --shadow-3:0 14px 34px rgba(20,40,70,.12);
  --t:.18s ease-out;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;background-color:transparent}
a:hover{color:var(--brand-dark)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700}
h1{font-size:clamp(28px,4vw,40px);line-height:1.25;font-weight:700}
h2{font-size:clamp(24px,3vw,31px);line-height:1.35}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grid-container{
  max-width:var(--container)!important;
  padding-left:24px;
  padding-right:24px;
}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x > .cell{padding-left:12px;padding-right:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t),border-color var(--t);
}
.site-header.is-shrink{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height var(--t);
}
.site-header.is-shrink .header-inner{height:64px}
.nav-left,.nav-right{
  flex:1 1 0;
  display:flex;
  align-items:center;
  min-width:0;
}
.nav-right{justify-content:flex-end;gap:18px}
.nav-list{
  display:flex;
  align-items:center;
  gap:22px;
  margin:0;
  padding:0;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:21px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand svg{color:var(--brand);flex:0 0 auto}
.brand em{font-style:normal;color:var(--accent)}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 10px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--brand);
  border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .nav-toggle span:nth-child(2){opacity:0}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-panel{
  display:none;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:var(--shadow-2);
  max-height:calc(100vh - 64px);
  overflow-y:auto;
  padding:8px 0 20px;
}
body.menu-open .mobile-panel{display:block}
.mobile-panel ul{margin:0;padding:0}
.mobile-panel li{border-bottom:1px solid var(--line)}
.mobile-panel li:last-child{border-bottom:0}
.mobile-panel a{
  display:block;
  padding:0 24px;
  line-height:52px;
  font-size:15px;
  color:var(--text);
}
.mobile-panel a.active{color:var(--brand);font-weight:700}
.mobile-panel .btn{margin:16px 24px 0;width:calc(100% - 48px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--shadow-3);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px)}
.btn-on-dark{background:#fff;color:var(--brand)}
.btn-on-dark:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px)}
.btn-ghost-on-dark{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost-on-dark:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  background:none;border:0;padding:6px 0;
}
.btn-text i{transition:transform var(--t)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  font-size:13px;
  letter-spacing:.04em;
  border-radius:999px;
  background:rgba(30,92,158,.08);
  color:var(--brand);
}
.badge-accent{background:rgba(224,138,46,.12);color:var(--accent-dark)}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:16px 0;
  font-size:13.5px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CDD8}
.breadcrumb .current{color:#8A98A6}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  background:linear-gradient(100deg,rgba(246,248,251,.95) 0%,rgba(246,248,251,.82) 45%,rgba(246,248,251,.45) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:56px 0 60px;
}
.page-hero .badge{margin-bottom:16px}
.page-hero h1{margin-bottom:14px}
.page-hero p.lead{
  max-width:640px;
  font-size:17px;
  color:var(--muted);
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent-dark);
  font-weight:600;
  margin-bottom:10px;
}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}

/* ---------- alternating rows ---------- */
.xlist{border-top:1px solid var(--line)}
.xrow{
  display:flex;
  align-items:center;
  gap:48px;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.xrow.reverse{flex-direction:row-reverse}
.xrow .xmedia{
  flex:0 0 45%;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  background:var(--brand-light);
}
.xrow .xmedia img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.xrow .xbody{flex:1 1 auto;min-width:0}
.xrow .xindex{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--accent-dark);
  margin-bottom:8px;
}
.xrow h3{margin-bottom:12px}
.xrow p{color:var(--muted);font-size:15.5px}
.tick-list{margin-top:14px}
.tick-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:8px;
  font-size:15px;
  color:var(--text);
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:rgba(30,92,158,.18);
  box-shadow:inset 0 0 0 2px var(--brand);
}

/* ---------- scene cards ---------- */
.scene-card{
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.scene-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.scene-card .icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-light);
  color:var(--brand);
  margin-bottom:16px;
  font-size:18px;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:15px;color:var(--muted);margin:0}

/* ---------- faq ---------- */
.faq-list{max-width:860px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.open{border-color:var(--brand-line);box-shadow:var(--shadow-1)}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:18px 22px;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand);
  font-size:16px;
  font-weight:700;
  line-height:1;
  transition:background-color var(--t),color var(--t);
}
.faq-item.open .faq-icon{background:var(--brand);color:#fff}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{
  margin:0;
  padding:0 22px 20px;
  font-size:15px;
  color:var(--muted);
}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand);
  color:#fff;
  padding:66px 0;
}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.86);max-width:640px;margin-bottom:26px}
.cta-band .hero-actions{justify-content:flex-start}

/* ---------- link cards ---------- */
.link-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  color:var(--text);
  box-shadow:var(--shadow-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.link-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow-2);transform:translateY(-3px);color:var(--text)}
.link-card .badge{align-self:flex-start;margin-bottom:14px}
.link-card h3{font-size:18px;margin-bottom:10px}
.link-card p{font-size:15px;color:var(--muted);margin-bottom:16px}
.link-card .more{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.link-card:hover .more i{transform:translateX(4px)}
.link-card .more i{transition:transform var(--t)}

/* ---------- footer ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:56px 0 36px;
}
.footer-brand .brand{font-size:19px;margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:300px;margin:0}
.footer-col h4{
  font-size:16px;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:12px;
  line-height:1.7;
}
.footer-contact i{color:var(--brand);margin-top:5px}
.footer-form{display:flex;gap:8px;margin:6px 0 8px}
.footer-form input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  padding:0 14px;
  font-size:14px;
  color:var(--text);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color var(--t),box-shadow var(--t);
}
.footer-form input::placeholder{color:#9AA7B4}
.footer-form input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,92,158,.12);
}
.footer-form .btn{flex:0 0 auto;padding:11px 18px}
.form-note{font-size:13px;color:var(--muted);margin:0}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .container{padding:0 20px}
  .grid-container{padding-left:20px;padding-right:20px}
  .nav-left{display:none}
  .nav-left .nav-list,.nav-right .nav-list{display:none}
  .header-inner{position:relative;justify-content:flex-end;height:64px}
  .site-header.is-shrink .header-inner{height:60px}
  .brand{
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    font-size:18px;
  }
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .xrow{gap:30px;padding:36px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:44px 0 28px}
  .cta-band{padding:56px 0}
}
@media screen and (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .grid-container{padding-left:16px;padding-right:16px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x > .cell{padding-left:8px;padding-right:8px}
  .brand{font-size:17px}
  .brand svg{width:20px;height:20px}
  .page-hero{padding:36px 0 40px;background:linear-gradient(160deg,rgba(246,248,251,.96) 0%,rgba(246,248,251,.88) 60%,rgba(246,248,251,.7) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
  .page-hero p.lead{font-size:15.5px}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .xrow,.xrow.reverse{flex-direction:column;gap:20px;padding:30px 0}
  .xrow .xmedia{flex:0 0 auto;width:100%}
  .xrow .xmedia img{aspect-ratio:16/10}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-band .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:38px 0 24px}
  .footer-form{flex-direction:column}
  .footer-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px}
}
@media screen and (max-width:520px){
  h1{font-size:26px}
  .brand{font-size:16px}
  .badge{font-size:12.5px}
}

/* roulang page: category2 */
:root{
  --primary:#1E5C9E;
  --primary-dark:#164A7E;
  --primary-light:#E9F1FA;
  --accent:#E08A2E;
  --accent-dark:#B96C1C;
  --accent-light:#FDF3E6;
  --text:#1C2B3A;
  --text-sub:#5B6B7B;
  --line:#E3E9F0;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --radius-btn:10px;
  --radius-card:14px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,40,70,.06);
  --shadow-2:0 8px 24px rgba(20,40,70,.08);
  --shadow-3:0 14px 34px rgba(20,40,70,.12);
  --t:180ms ease-out;
  --header-h:76px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--text);}
h1{font-size:38px;line-height:1.25;letter-spacing:.01em;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
::selection{background:var(--primary-light);color:var(--primary-dark);}

.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  transition:all var(--t);white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{background:none;padding:6px 0;color:var(--primary);font-weight:600;}
.btn-text i{transition:transform var(--t);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:13px;letter-spacing:.04em;font-weight:600;
  background:var(--primary-light);color:var(--primary-dark);
}
.badge-accent{background:var(--accent-light);color:var(--accent-dark);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:height var(--t),box-shadow var(--t);
  backdrop-filter:saturate(150%) blur(6px);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:18px;height:var(--header-h);transition:height var(--t);
}
.site-header.is-scrolled .header-inner{height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;}
.nav-left{justify-self:start;}
.nav-right{justify-self:end;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;font-weight:500;color:var(--text);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.brand{
  justify-self:center;display:inline-flex;align-items:center;gap:10px;
  font-size:21px;font-weight:700;color:var(--text);letter-spacing:.01em;
}
.brand svg{color:var(--primary);flex:none;}
.brand em{font-style:normal;color:var(--primary);}
.brand:hover{color:var(--primary-dark);}
.header-actions{display:flex;align-items:center;gap:14px;}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  position:relative;align-items:center;justify-content:center;
}
.menu-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--text);
  border-radius:2px;transition:transform var(--t),opacity var(--t),top var(--t);
}
.menu-toggle span:nth-child(1){top:15px;}
.menu-toggle span:nth-child(2){top:21px;}
.menu-toggle span:nth-child(3){top:27px;}
.menu-toggle.is-open span:nth-child(1){top:21px;transform:rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){top:21px;transform:rotate(-45deg);}
.mobile-panel{
  position:fixed;left:0;right:0;top:var(--header-h);bottom:0;z-index:110;
  background:#fff;border-top:1px solid var(--line);
  padding:8px 16px 32px;overflow-y:auto;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:transform var(--t),opacity var(--t),visibility var(--t);
}
.mobile-panel.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:16px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.active{color:var(--primary);font-weight:700;}
.mobile-panel a i{color:var(--text-sub);font-size:13px;}
.mobile-panel .btn{margin-top:20px;min-height:48px;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:18px 0 0;background:var(--bg);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-sub);}
.breadcrumb a{color:var(--text-sub);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B9C4D0;}
.breadcrumb .current{color:var(--text-sub);}

/* ============ 窄 Hero ============ */
.page-hero{
  position:relative;margin-top:18px;overflow:hidden;
  border-radius:var(--radius-lg);
  background-image:linear-gradient(96deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 46%,rgba(255,255,255,.42) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.page-hero-inner{
  min-height:340px;display:flex;flex-direction:column;justify-content:center;
  padding:56px 0 52px;max-width:720px;
}
.page-hero h1{margin:16px 0 14px;}
.page-hero .hero-sub{
  font-size:17px;line-height:1.8;color:var(--text-sub);max-width:620px;margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;
}
.hero-fact{
  display:flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.86);border:1px solid var(--line);
  font-size:13px;color:var(--text-sub);
}
.hero-fact i{color:var(--primary);}

/* ============ 锚点导航 ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:90;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
  margin-top:32px;
  transition:top var(--t);
}
.site-header.is-scrolled ~ .page-main .anchor-bar{top:64px;}
.anchor-inner{display:flex;align-items:center;gap:18px;min-height:60px;}
.anchor-label{
  font-size:13px;color:var(--text-sub);letter-spacing:.04em;
  padding-right:18px;border-right:1px solid var(--line);white-space:nowrap;font-weight:600;
}
.anchor-list{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-link{
  display:inline-block;padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--text-sub);white-space:nowrap;
  transition:all var(--t);
}
.anchor-link:hover{background:var(--primary-light);color:var(--primary-dark);}
.anchor-link.active{background:var(--primary);color:#fff;font-weight:600;}
.anchor-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-light{background:#fff;}
.section-alt{background:var(--bg);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{margin-bottom:16px;}
.section-head p{color:var(--text-sub);font-size:16px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section[id]{scroll-margin-top:156px;}

/* ============ 大卡片（2 列） ============ */
.card-cell{margin-bottom:24px;}
.big-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.big-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9DDF0;}
.big-card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--primary-light);}
.big-card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.big-card:hover .big-card-media img{transform:scale(1.03);}
.big-card-media .badge{position:absolute;left:16px;top:16px;background:rgba(255,255,255,.94);color:var(--primary-dark);}
.big-card-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1;}
.big-card-body h3{margin-bottom:12px;}
.big-card-body > p{color:var(--text-sub);font-size:15px;}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  display:flex;gap:10px;font-size:15px;color:var(--text);line-height:1.7;
  padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list i{color:var(--accent);margin-top:6px;flex:none;font-size:13px;}
.big-card-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.card-index{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;
}

/* ============ 步骤卡 ============ */
.step-card{
  height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9DDF0;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:18px;font-weight:700;margin-bottom:18px;
}
.step-card h3{margin-bottom:12px;}
.step-card p{color:var(--text-sub);font-size:15px;}
.step-list{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
.step-list li{display:flex;gap:12px;font-size:15px;color:var(--text-sub);line-height:1.7;}
.step-list .dot{
  flex:none;width:22px;height:22px;border-radius:50%;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:4px;
}

/* ============ 图标卡 ============ */
.icon-card{
  height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);
  border-left:3px solid var(--accent);
  transition:transform var(--t),box-shadow var(--t);
}
.icon-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.icon-card .icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-light);color:var(--accent-dark);font-size:19px;margin-bottom:18px;
}
.icon-card h3{margin-bottom:12px;}
.icon-card p{color:var(--text-sub);font-size:15px;}
.mini-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.mini-list li{
  position:relative;padding-left:16px;font-size:15px;color:var(--text);
  line-height:1.7;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}

/* ============ 数据带 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 28px;box-shadow:var(--shadow-1);margin-top:8px;
}
.metric{text-align:center;padding:0 8px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric strong{display:block;font-size:34px;line-height:1.2;color:var(--primary);font-weight:700;}
.metric span{display:block;margin-top:6px;font-size:14px;color:var(--text-sub);}

/* ============ CTA ============ */
.cta-band{
  background:var(--primary);color:#fff;border-radius:var(--radius-lg);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;box-shadow:var(--shadow-2);
}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:16px;max-width:620px;margin:0;}
.cta-band .btn-primary{background:#fff;color:var(--primary-dark);}
.cta-band .btn-primary:hover{background:#EAF2FB;color:var(--primary-dark);}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.7);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;}

/* ============ 站内互链 ============ */
.link-card{
  height:100%;display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9DDF0;}
.link-card h4{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.link-card h4 i{color:var(--primary);font-size:14px;transition:transform var(--t);}
.link-card:hover h4 i{transform:translateX(4px);}
.link-card p{font-size:14px;color:var(--text-sub);margin:0;}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;font-size:20px;}
.footer-brand p{font-size:14px;color:var(--text-sub);max-width:300px;}
.footer-col h4{margin-bottom:16px;font-size:15px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-sub);}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-sub);line-height:1.7;}
.footer-contact i{color:var(--primary);margin-top:5px;flex:none;}
.footer-form{display:flex;gap:10px;margin-top:16px;}
.footer-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.footer-form input::placeholder{color:#9AA8B6;}
.footer-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,92,158,.12);}
.form-note{font-size:13px;color:var(--text-sub);margin-top:10px;}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-sub);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.footer-bottom .legal a{color:var(--text-sub);font-size:13px;}
.footer-bottom .legal a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .grid-container,.container{padding-left:20px;padding-right:20px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .section{padding:72px 0;}
  .nav-left,.nav-right{display:none;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .brand{font-size:19px;}
  .menu-toggle{display:flex;}
  .header-actions{display:none;}
  .anchor-bar{top:64px;}
  .site-header.is-scrolled ~ .page-main .anchor-bar{top:64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:20px;}
  .metric:nth-child(2){border-right:0;}
  .metric{border-bottom:1px solid var(--line);padding-bottom:16px;}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:0;padding-bottom:0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:27px;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  .section{padding:56px 0;}
  .section-sm{padding:44px 0;}
  .section-head{margin-bottom:30px;}
  .page-hero-inner{min-height:300px;padding:44px 0 40px;}
  .page-hero .hero-sub{font-size:16px;}
  .card-cell{width:100% !important;margin-bottom:16px;}
  .big-card-body{padding:22px 20px 24px;}
  .step-card,.icon-card{padding:22px;}
  .cta-band{padding:32px 22px;border-radius:var(--radius-card);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .anchor-inner{gap:10px;}
  .anchor-label{display:none;}
  .anchor-bar{top:64px;}
}
@media (max-width:519px){
  .grid-container,.container{padding-left:16px;padding-right:16px;}
  h1{font-size:24px;}
  h2{font-size:21px;}
  .brand{font-size:17px;gap:8px;}
  .brand svg{width:20px;height:20px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding-bottom:16px;}
  .metric:last-child{border-bottom:0;padding-bottom:0;}
  .metric strong{font-size:30px;}
}

/* roulang page: category3 */
:root{
  --brand:#1E5C9E;
  --brand-deep:#164A7E;
  --brand-soft:#E9F1FA;
  --accent:#E08A2E;
  --accent-soft:#FDF2E4;
  --ink:#1C2B3A;
  --muted:#5B6B7B;
  --line:#E3E9F0;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --danger:#C4534F;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,40,70,.06);
  --sh-2:0 8px 24px rgba(20,40,70,.08);
  --sh-3:0 14px 34px rgba(20,40,70,.12);
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:var(--r-lg);}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
h1{font-size:38px;line-height:1.25;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.1em;color:var(--ink);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:100px 0;}
.section.tight{padding:72px 0;}
.section.alt{background:#FFFFFF;}
.section.soft{background:var(--brand-soft);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--brand);
  background:rgba(30,92,158,.08);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:14px;
  font-weight:600;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),box-shadow var(--t),border-color var(--t),transform var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:rgba(30,92,158,.08);color:var(--brand-deep);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:#F2F7FC;color:var(--brand-deep);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.text-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.text-btn i{transition:transform var(--t);}
.text-btn:hover i{transform:translateX(4px);}
.btn:active{transform:translateY(1px);}

/* ---------- badges ---------- */
.badge{
  display:inline-block;
  font-size:13px;
  letter-spacing:.04em;
  border-radius:var(--r-pill);
  padding:4px 12px;
  background:rgba(30,92,158,.08);
  color:var(--brand);
  font-weight:600;
}
.badge.warm{background:rgba(224,138,46,.12);color:#9C5C15;}
.tag{
  display:inline-block;
  font-size:13px;
  color:var(--muted);
  background:#F1F5FA;
  border-radius:var(--r-pill);
  padding:3px 11px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t),border-color var(--t),height var(--t);
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px rgba(20,40,70,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height var(--t);
}
.site-header.is-stuck .header-inner{height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;flex:1 1 0;min-width:0;}
.nav-right{justify-content:flex-end;gap:16px;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 10px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:2px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--brand);
  font-weight:700;
  font-size:21px;
  letter-spacing:.01em;
  flex:0 0 auto;
}
.brand svg{flex:0 0 auto;}
.brand span{color:var(--ink);}
.brand em{font-style:normal;color:var(--brand);}
.brand:hover{color:var(--brand-deep);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{padding:6px 0;}
.mobile-panel li a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 24px;
  color:var(--ink);
  font-size:16px;
  border-bottom:1px solid var(--line);
}
.mobile-panel li a.active{color:var(--brand);font-weight:700;}
.mobile-panel .mobile-cta{padding:16px 24px 24px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:14px 0;
  flex-wrap:wrap;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CEDB;}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  min-height:340px;
  display:flex;
  align-items:center;
  color:#fff;
  background-image:linear-gradient(90deg,rgba(22,74,126,.94) 0%,rgba(30,92,158,.86) 45%,rgba(30,92,158,.55) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.cat-hero .hero-inner{padding:64px 0;}
.cat-hero .badge{
  background:rgba(255,255,255,.16);
  color:#fff;
  border:1px solid rgba(255,255,255,.34);
  margin-bottom:18px;
}
.cat-hero h1{color:#fff;max-width:820px;}
.cat-hero h1 small{
  display:block;
  font-size:16px;
  font-weight:500;
  color:rgba(255,255,255,.86);
  margin-top:14px;
  letter-spacing:.02em;
}
.cat-hero p{
  margin-top:18px;
  max-width:640px;
  color:rgba(255,255,255,.9);
  font-size:16px;
}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}

/* ---------- cards ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t),transform var(--t);
}
.card:hover{box-shadow:var(--sh-3);border-color:rgba(30,92,158,.35);transform:translateY(-3px);}
.card h3{margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.card .card-icon{
  width:46px;height:46px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(30,92,158,.09);
  color:var(--brand);
  font-size:18px;
  margin-bottom:16px;
}
.card .badge{margin-bottom:14px;}

.media-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t),transform var(--t);
}
.media-card:hover{box-shadow:var(--sh-3);border-color:rgba(30,92,158,.35);transform:translateY(-3px);}
.media-card .thumb{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--brand-soft);
}
.media-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
}
.media-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.media-card h3{font-size:18px;}
.media-card p{color:var(--muted);font-size:14.5px;margin:0;}
.media-card .meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}

/* ---------- intro split ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.split .panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:14px;
  box-shadow:var(--sh-2);
  position:relative;
}
.split .panel img{aspect-ratio:3/2;object-fit:cover;width:100%;}
.float-stat{
  position:absolute;
  left:-18px;
  bottom:-22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:16px 20px;
  min-width:186px;
}
.float-stat strong{display:block;font-size:26px;color:var(--brand);line-height:1.2;}
.float-stat span{font-size:13px;color:var(--muted);}
.point-list li{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.point-list li:last-child{border-bottom:none;}
.point-list .num{
  flex:0 0 auto;
  font-size:15px;
  font-weight:700;
  color:var(--accent);
  min-width:30px;
}
.point-list h3{font-size:17px;margin-bottom:6px;}
.point-list p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- stats bar ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.stat strong{display:block;font-size:34px;line-height:1.15;color:var(--brand);font-weight:700;}
.stat span{font-size:14px;color:var(--muted);display:block;margin-top:6px;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:42px;}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:34px;
  width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(30,92,158,.25) 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-42px;
  top:7px;
  width:20px;height:20px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--brand);
  box-shadow:0 0 0 5px rgba(30,92,158,.09);
}
.tl-item::after{
  content:"";
  position:absolute;
  left:-36px;
  top:13px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand);
}
.tl-inner{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t);
}
.tl-item:hover .tl-inner{box-shadow:var(--sh-2);border-color:rgba(30,92,158,.3);}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px;}
.tl-step{
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  background:var(--accent-soft);
  border-radius:var(--r-pill);
  padding:3px 12px;
  letter-spacing:.04em;
}
.tl-head h3{font-size:19px;}
.tl-inner p{color:var(--muted);font-size:15px;margin-bottom:12px;}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;}

/* ---------- checklist ---------- */
.check-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 32px;
}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 20px;
  box-shadow:var(--sh-1);
}
.check-list i{color:var(--brand);margin-top:4px;}
.check-list strong{display:block;font-size:15.5px;margin-bottom:4px;}
.check-list span{font-size:14px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:rgba(30,92,158,.45);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  background:transparent;
  border:none;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(30,92,158,.09);
  color:var(--brand);
  font-size:13px;
}
.faq-a{
  display:none;
  padding:0 24px 22px;
  color:var(--muted);
  font-size:15px;
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--brand-deep) 0%,var(--brand) 100%);
  color:#fff;
  border-radius:var(--r-lg);
  padding:56px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band h2{color:#fff;font-size:28px;}
.cta-band p{color:rgba(255,255,255,.88);margin-top:10px;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  margin-top:0;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--muted);margin-bottom:10px;}
.footer-contact i{color:var(--brand);margin-top:5px;}
.footer-form{display:flex;gap:8px;margin-top:14px;}
.footer-form input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:0 14px;
  font-size:14px;
  color:var(--ink);
  background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.footer-form input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,92,158,.14);
}
.form-note{font-size:13px;color:var(--muted);margin-top:10px;}
.form-note.is-error{color:var(--danger);}
.form-note.is-ok{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--muted);
  flex-wrap:wrap;
}
.footer-bottom .legal{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .legal a{color:var(--muted);font-size:13px;}
.footer-bottom .legal a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
  .brand{margin:0 auto;font-size:20px;}
  h1{font-size:32px;}
  h2{font-size:27px;}
  .section{padding:76px 0;}
  .split{grid-template-columns:1fr;gap:36px;}
  .float-stat{left:auto;right:16px;bottom:-20px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 34px;}
}
@media screen and (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:16px;}
  h1{font-size:27px;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .cat-hero{min-height:auto;}
  .cat-hero .hero-inner{padding:48px 0;}
  .hero-actions .btn{width:100%;}
  .timeline{padding-left:32px;}
  .timeline::before{left:7px;}
  .tl-item::before{left:-32px;width:16px;height:16px;top:8px;}
  .tl-item::after{left:-27px;top:13px;width:6px;height:6px;}
  .tl-inner{padding:20px;}
  .check-list{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:16px;}
  .stat strong{font-size:28px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:36px 22px;border-radius:var(--r-card);}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .float-stat{position:static;margin-top:16px;left:auto;right:auto;bottom:auto;}
  .faq-q{padding:18px;font-size:15.5px;}
  .faq-a{padding:0 18px 18px;}
}
@media screen and (max-width:520px){
  .brand{font-size:18px;}
  .brand svg{width:20px;height:20px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1E5C9E;
  --c-primary-dark:#164A7E;
  --c-primary-light:#E9F1FA;
  --c-accent:#E08A2E;
  --c-accent-dark:#B96C18;
  --c-accent-light:#FDF3E6;
  --c-text:#1C2B3A;
  --c-text-sub:#5B6B7B;
  --c-line:#E3E9F0;
  --c-bg:#F6F8FB;
  --c-card:#FFFFFF;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,40,70,.06);
  --sh-2:0 8px 24px rgba(20,40,70,.08);
  --sh-3:0 14px 34px rgba(20,40,70,.12);
  --t:180ms ease-out;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover,.btn-primary:focus{background:var(--c-primary-dark);color:#fff;box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover,.btn-outline:focus{background:var(--c-primary-light);color:var(--c-primary-dark);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line);}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--c-primary);background:var(--c-primary-light);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  background:none;border:0;padding:0;
}
.btn-link i{transition:transform var(--t);font-size:12px;}
.btn-link:hover i{transform:translateX(4px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;letter-spacing:.04em;
  padding:5px 14px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary-dark);
  border:1px solid rgba(30,92,158,.14);
}
.badge-accent{background:var(--c-accent-light);color:var(--c-accent-dark);border-color:rgba(224,138,46,.2);}
.tag{
  display:inline-block;font-size:13px;letter-spacing:.04em;
  padding:3px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary-dark);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:200;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:height var(--t);
}
.site-header.is-scrolled .header-inner{height:64px;}
.nav-left,.nav-right{flex:1 1 0;display:flex;align-items:center;}
.nav-right{justify-content:flex-end;gap:14px;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-2px;
  height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}

.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:21px;font-weight:700;color:var(--c-text);
  letter-spacing:.01em;white-space:nowrap;
}
.brand svg{color:var(--c-primary);flex:none;}
.brand em{font-style:normal;color:var(--c-primary);}
.brand:hover{color:var(--c-text);}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{
  display:block;width:20px;height:2px;background:var(--c-text);border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel ul li{border-bottom:1px solid var(--c-line);}
.mobile-panel ul li:last-child{border-bottom:0;}
.mobile-panel a{
  display:flex;align-items:center;
  min-height:52px;padding:0 24px;
  font-size:15px;color:var(--c-text);
}
.mobile-panel a.active{color:var(--c-primary);font-weight:700;}
.mobile-cta{padding:16px 24px 0;}
.mobile-cta .btn{width:100%;}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(20,40,70,.35);z-index:190;
}
.nav-mask.is-open{display:block;}

/* ============ 面包屑 ============ */
.breadcrumb{
  background:#fff;
  border-bottom:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-sub);
}
.breadcrumb .container{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  min-height:52px;
  padding-top:6px;padding-bottom:6px;
}
.breadcrumb a{color:var(--c-text-sub);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#A9B6C4;}
.breadcrumb .current{color:var(--c-text-sub);}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  min-height:340px;
  display:flex;align-items:center;
  background-image:
    linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.88) 46%,rgba(233,241,250,.62) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero-inner{padding:56px 0;max-width:720px;}
.page-hero h1{
  font-size:38px;line-height:1.25;font-weight:700;
  letter-spacing:.01em;margin:16px 0 14px;
}
.page-hero .lead{
  font-size:16px;line-height:1.85;color:var(--c-text-sub);
  max-width:640px;
}
.page-hero .hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:24px;
}
.hero-facts span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text-sub);
}
.hero-facts i{color:var(--c-primary);font-size:13px;}

/* ============ 板块 ============ */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .badge{margin-bottom:14px;}
.section-head h2{
  font-size:30px;line-height:1.35;font-weight:700;
  margin-bottom:14px;
}
.section-head p{font-size:16px;color:var(--c-text-sub);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 图文卡片组 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.q-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t),transform var(--t);
}
.q-card:hover{box-shadow:var(--sh-2);border-color:rgba(30,92,158,.35);transform:translateY(-3px);}
.q-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  background:var(--c-primary-light);
  overflow:hidden;
}
.q-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.q-card:hover .thumb img{transform:scale(1.04);}
.q-card .thumb .num{
  position:absolute;left:14px;top:14px;
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.94);
  color:var(--c-primary);font-size:14px;font-weight:700;
  box-shadow:var(--sh-1);
}
.q-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.q-card h3{font-size:19px;line-height:1.45;font-weight:600;}
.q-card p{font-size:15px;color:var(--c-text-sub);line-height:1.8;}
.q-card .foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
}

/* ============ 指标带 ============ */
.metrics{
  background:linear-gradient(180deg,#164A7E 0%,#1E5C9E 100%);
  color:#fff;
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  box-shadow:var(--sh-2);
}
.metric{padding-left:18px;border-left:2px solid rgba(255,255,255,.22);}
.metric strong{
  display:block;font-size:32px;line-height:1.2;font-weight:700;letter-spacing:.01em;
}
.metric span{
  display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;
}
.metric.accent strong{color:#F6C079;}

/* ============ 清单块 ============ */
.check-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--sh-1);
}
.check-list{display:grid;gap:0;}
.check-list li{
  display:flex;gap:14px;
  padding:18px 0;
  border-bottom:1px dashed var(--c-line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li:first-child{padding-top:0;}
.check-list i{color:var(--c-accent);margin-top:6px;font-size:14px;}
.check-list h4{font-size:17px;font-weight:600;margin-bottom:4px;}
.check-list p{font-size:15px;color:var(--c-text-sub);line-height:1.8;}

.side-note{
  background:var(--c-primary-light);
  border:1px solid rgba(30,92,158,.16);
  border-radius:var(--r-lg);
  padding:28px;
}
.side-note h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.side-note p{font-size:15px;color:var(--c-text-sub);line-height:1.85;}
.side-note .note-list{margin-top:16px;display:grid;gap:10px;}
.side-note .note-list li{
  display:flex;gap:10px;font-size:14px;color:var(--c-text);line-height:1.7;
}
.side-note .note-list i{color:var(--c-primary);margin-top:5px;font-size:12px;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:rgba(30,92,158,.4);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;
  background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:8px;
  background:var(--c-primary-light);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;line-height:1;
}
.faq-a{
  display:none;
  padding:0 22px 22px;
  font-size:15px;color:var(--c-text-sub);line-height:1.9;
  border-top:1px dashed var(--c-line);
  padding-top:16px;
}
.faq-item.is-open .faq-a{display:block;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--c-primary);
  color:#fff;
  border-radius:var(--r-lg);
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.82);max-width:620px;line-height:1.85;}
.cta-band .cta-actions{display:flex;gap:14px;flex:none;}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);}
.cta-band .btn-primary:hover{background:#F0F5FB;color:var(--c-primary-dark);}
.cta-band .btn-outline{border-color:rgba(255,255,255,.7);color:#fff;}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ============ 站内互链 ============ */
.link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.link-card:hover{border-color:rgba(30,92,158,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.link-card strong{display:block;font-size:16px;font-weight:600;color:var(--c-text);}
.link-card span{display:block;font-size:13px;color:var(--c-text-sub);margin-top:4px;}
.link-card i{color:var(--c-primary);font-size:13px;transition:transform var(--t);}
.link-card:hover i{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--c-line);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;padding:64px 0 44px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--c-text-sub);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-sub);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--c-text-sub);line-height:1.7;}
.footer-contact i{color:var(--c-primary);margin-top:6px;font-size:12px;flex:none;}
.footer-form{display:flex;gap:10px;margin-top:18px;}
.footer-form input{
  flex:1;min-height:44px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  font-size:14px;color:var(--c-text);background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.footer-form input::placeholder{color:#9AA8B6;}
.footer-form input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,92,158,.12);
}
.footer-form .btn{min-height:44px;padding:0 18px;}
.form-note{font-size:13px;color:var(--c-text-sub);margin-top:10px;}
.form-note.is-error{color:#C0392B;}
.form-note.is-ok{color:#1E7A46;}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-sub);
}
.footer-bottom .legal{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.footer-bottom .legal a{color:var(--c-text-sub);}
.footer-bottom .legal a:hover{color:var(--c-primary);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .container,.grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{padding:0 20px;height:68px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
  .brand{font-size:19px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero-inner{padding:44px 0;}
  .page-hero h1{font-size:32px;}
  .section-head h2{font-size:26px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);padding:34px 28px;gap:24px;}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding:52px 0 36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-band .cta-actions{width:100%;}
}

@media screen and (max-width:767px){
  body{font-size:15px;}
  .container,.grid-container{padding-left:16px;padding-right:16px;}
  .header-inner{padding:0 16px;height:64px;}
  .brand{font-size:17px;gap:7px;}
  .brand svg{width:20px;height:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:23px;}
  .page-hero{min-height:0;}
  .page-hero-inner{padding:36px 0 40px;}
  .page-hero h1{font-size:26px;}
  .page-hero .lead{font-size:15px;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .q-card .body{padding:18px;}
  .metrics{grid-template-columns:1fr;padding:28px 22px;gap:20px;}
  .metric strong{font-size:28px;}
  .check-panel{padding:22px;}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-band .cta-actions{flex-direction:column;}
  .cta-band .cta-actions .btn{width:100%;}
  .link-grid{grid-template-columns:1fr;gap:14px;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a{padding:14px 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media screen and (max-width:520px){
  .page-hero h1{font-size:23px;}
  .q-card h3{font-size:17px;}
  .hero-facts{flex-direction:column;gap:8px;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1E5C9E;
  --c-primary-dark:#164A7E;
  --c-primary-light:#E9F1FA;
  --c-accent:#E08A2E;
  --c-accent-dark:#B96C18;
  --c-accent-light:#FDF2E3;
  --c-text:#1C2B3A;
  --c-text-2:#5B6B7B;
  --c-line:#E3E9F0;
  --c-bg:#F6F8FB;
  --c-card:#FFFFFF;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,40,70,.06);
  --sh-2:0 8px 24px rgba(20,40,70,.08);
  --sh-3:0 14px 34px rgba(20,40,70,.12);
  --t:180ms ease-out;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:height var(--t),box-shadow var(--t),border-color var(--t),background-color var(--t);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
  background:#fff;
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:76px;
  transition:height var(--t);
}
.site-header.is-scrolled .header-inner{height:64px;}

.nav-left{justify-self:start;}
.nav-right{justify-self:end;display:flex;align-items:center;gap:18px;}
.nav-list{display:flex;align-items:center;gap:24px;margin:0;}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  padding:6px 2px;
  line-height:1.4;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
  border-radius:2px;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}

.brand{
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-primary);
  font-size:21px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand svg{flex:0 0 auto;}
.brand span em{font-style:normal;color:var(--c-text);}
.brand:hover{color:var(--c-primary-dark);}

.nav-toggle{
  display:none;
  justify-self:end;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  background:#fff;
  border-radius:var(--r-btn);
  padding:0;
  position:relative;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  margin:3px auto;
  background:var(--c-text);
  border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;
  padding:14px 24px;
  font-size:15px;
  font-weight:500;
  border-bottom:1px solid var(--c-line);
  min-height:52px;
  line-height:1.6;
}
.mobile-panel a.active{color:var(--c-primary);font-weight:700;}
.mobile-panel .mobile-cta{
  margin:18px 24px 0;
  display:block;
  text-align:center;
  border-bottom:none;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  will-change:transform;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-text{background:none;border:none;color:var(--c-primary);padding:6px 0;font-weight:600;min-height:auto;}
.btn-text i{transition:transform var(--t);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 16px;min-height:38px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  letter-spacing:.04em;
  font-weight:600;
  background:var(--c-primary-light);
  color:var(--c-primary-dark);
}
.badge-accent{background:var(--c-accent-light);color:var(--c-accent-dark);}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{background:#fff;border-bottom:1px solid var(--c-line);}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-text-2);
  padding:14px 0;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#B9C5D2;}
.breadcrumb .current{color:var(--c-text-2);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  min-height:360px;
  display:flex;
  align-items:center;
  background-color:#EAF1F9;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.88) 46%,rgba(255,255,255,.42) 100%);
}
.hero-inner{position:relative;z-index:1;max-width:640px;padding:64px 0;}
.hero-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.02em;
  margin-bottom:14px;
}
.page-hero h1{
  font-size:38px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin:0 0 16px;
}
.hero-sub{
  font-size:17px;
  color:var(--c-text-2);
  line-height:1.8;
  margin-bottom:26px;
  max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:28px;
  font-size:14px;
  color:var(--c-text-2);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--c-primary);}

/* ============ 板块 ============ */
.section{padding:104px 0;}
.section-tight{padding:80px 0;}
.section-alt{background:#fff;}
.section-dark{
  background:var(--c-primary-dark);
  color:#fff;
}
.section-head{max-width:760px;margin-bottom:52px;}
.section-head h2{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  margin:14px 0 14px;
}
.section-head p{color:var(--c-text-2);font-size:16px;}
.section-dark .section-head p{color:rgba(255,255,255,.78);}
.section-dark .badge{background:rgba(255,255,255,.14);color:#fff;}
.section-head-center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 分块叙述 ============ */
.narrative{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:start;
}
.narrative-blocks{display:grid;gap:34px;}
.narrative-item{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:18px;
  padding-bottom:30px;
  border-bottom:1px solid var(--c-line);
}
.narrative-item:last-child{border-bottom:none;padding-bottom:0;}
.narrative-num{
  font-size:20px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.4;
  padding-top:2px;
}
.narrative-item h3{
  font-size:21px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.narrative-item p{color:var(--c-text-2);font-size:16px;}
.narrative-media{
  position:sticky;
  top:100px;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;
  background:var(--c-primary-light);
}
.narrative-media img{width:100%;height:100%;object-fit:cover;}
.narrative-note{
  margin-top:20px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:var(--sh-1);
}
.narrative-note h4{font-size:17px;font-weight:600;margin-bottom:8px;}
.narrative-note p{font-size:14px;color:var(--c-text-2);line-height:1.75;}

/* ============ 对照表 ============ */
.table-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare caption{
  caption-side:top;
  text-align:left;
  padding:0;
}
table.compare th,
table.compare td{
  text-align:left;
  padding:16px 22px;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
  line-height:1.7;
}
table.compare thead th{
  background:var(--c-primary-light);
  color:var(--c-primary-dark);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  border-bottom:1px solid #CFE0F1;
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody td:first-child{font-weight:600;color:var(--c-text);width:26%;}
table.compare .ok{color:var(--c-primary-dark);}
table.compare .ok i{color:#2E8B57;margin-right:6px;}
table.compare .no{color:var(--c-text-2);}
table.compare .no i{color:#C0553F;margin-right:6px;}
table.compare tbody tr:hover{background:#FAFCFF;}

/* ============ 清单 ============ */
.checklist{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px 24px;
}
.checklist li{
  display:grid;
  grid-template-columns:26px 1fr;
  gap:12px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:18px 20px;
  box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.checklist li:hover{border-color:#BFD8EF;box-shadow:var(--sh-2);transform:translateY(-3px);}
.checklist i{color:var(--c-primary);font-size:15px;padding-top:6px;}
.checklist strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px;}
.checklist span{font-size:14px;color:var(--c-text-2);line-height:1.75;}

/* ============ 处理流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#CFE0F1;}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:var(--r-pill);
  background:var(--c-accent-light);
  color:var(--c-accent-dark);
  font-weight:700;
  font-size:15px;
  margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--c-text-2);line-height:1.75;}
.steps-line{
  height:2px;
  background:linear-gradient(90deg,var(--c-primary) 0%,rgba(30,92,158,.15) 100%);
  border-radius:2px;
  margin-bottom:-46px;
  max-width:72%;
}
.steps-wrap{position:relative;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:#9FC3E6;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:none;
  border:none;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  line-height:1.6;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:var(--r-pill);
  background:var(--c-primary-light);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:700;
  transition:background-color var(--t),color var(--t);
}
.faq-item.is-open .faq-icon{background:var(--c-primary);color:#fff;}
.faq-a{
  display:none;
  padding:0 22px 22px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.85;
  border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{display:block;}

/* ============ 站内互链 ============ */
.link-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.link-card{
  display:block;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.link-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#BFD8EF;}
.link-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-light);}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.link-card:hover .thumb img{transform:scale(1.04);}
.link-card .body{padding:18px 20px 20px;}
.link-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;}
.link-card p{font-size:14px;color:var(--c-text-2);line-height:1.7;margin-bottom:12px;}
.link-card .more{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.link-card:hover .more i{transform:translateX(4px);}
.link-card .more i{transition:transform var(--t);}

/* ============ CTA 带状 ============ */
.cta-band{
  background:var(--c-primary);
  color:#fff;
  border-radius:var(--r-lg);
  padding:56px 48px;
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:36px;
  align-items:center;
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:16px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);}
.cta-band .btn-primary:hover{background:#EAF1F9;color:var(--c-primary-dark);}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-line);
  padding:72px 0 0;
  margin-top:104px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand .brand{font-size:20px;margin-bottom:16px;justify-self:start;display:inline-flex;}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:300px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-text);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{
  display:grid;
  grid-template-columns:18px 1fr;
  gap:10px;
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.7;
}
.footer-contact i{color:var(--c-primary);padding-top:5px;}
.footer-form{display:flex;gap:10px;margin-top:18px;}
.footer-form input{
  flex:1;
  height:44px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  font-size:14px;
  color:var(--c-text);
  background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.footer-form input::placeholder{color:#9AA9B8;}
.footer-form input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,92,158,.12);
}
.form-note{font-size:13px;color:var(--c-text-2);margin-top:10px;}
.form-note.is-ok{color:var(--c-primary-dark);}
.form-note.is-err{color:#C0553F;}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:22px 0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--c-text-2);
}
.legal{display:flex;gap:18px;flex-wrap:wrap;}
.legal a{color:var(--c-text-2);}
.legal a:hover{color:var(--c-primary);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 20px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:block;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .brand{font-size:19px;}
  .page-hero{min-height:340px;}
  .hero-inner{padding:56px 0;}
  .page-hero h1{font-size:32px;}
  .section{padding:72px 0;}
  .section-tight{padding:60px 0;}
  .narrative{grid-template-columns:1fr;gap:36px;}
  .narrative-media{position:static;aspect-ratio:16/9;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps-line{display:none;}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;}
  .cta-band{grid-template-columns:1fr;padding:44px 32px;}
  .site-footer{margin-top:72px;}
}

@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .brand{font-size:17px;gap:8px;}
  .brand svg{width:20px;height:20px;}
  .page-hero{min-height:300px;background-position:center;}
  .page-hero::before{background:linear-gradient(180deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 70%,rgba(255,255,255,.7) 100%);}
  .hero-inner{padding:44px 0;}
  .page-hero h1{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:14px;font-size:13.5px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:34px;}
  .section-head h2{font-size:23px;}
  .narrative-item{grid-template-columns:1fr;gap:8px;}
  .narrative-num{font-size:18px;}
  .checklist{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .link-grid{grid-template-columns:1fr;}
  table.compare th,table.compare td{padding:14px 16px;font-size:14px;}
  .cta-band{padding:34px 22px;gap:24px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:520px){
  .brand{font-size:16px;}
  .page-hero h1{font-size:23px;}
  .section-head h2{font-size:21px;}
  .faq-q{font-size:15px;padding:17px 16px;}
  .faq-a{padding:0 16px 18px;}
}