/* roulang page: index */
:root{
  --brand:#245CA6;
  --brand-dark:#1B4780;
  --brand-soft:#E7EFFA;
  --brand-soft-2:#F2F7FD;
  --teal:#1B9C8A;
  --teal-soft:#E3F5F1;
  --amber:#E8A04C;
  --amber-soft:#FCF1E2;
  --ink:#142033;
  --muted:#65758B;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:10px;
  --sh-sm:0 2px 8px rgba(20,45,80,.05);
  --sh:0 8px 24px rgba(20,45,80,.08);
  --sh-hover:0 12px 30px rgba(20,45,80,.12);
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:-.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-head{margin-bottom:44px;max-width:780px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block;}
h2.h-sec{font-size:30px;margin-bottom:14px;}
.lead{color:var(--muted);font-size:16.5px;max-width:800px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;box-shadow:0 1px 0 var(--line);}
.brand-row{border-bottom:1px solid var(--line);background:#fff;}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 16px rgba(36,92,166,.28);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.2px;color:var(--ink);}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.4px;margin-top:3px;}
.brand-actions{display:flex;align-items:center;gap:10px;}
.link-quiet{
  font-size:14.5px;color:var(--muted);padding:8px 10px;border-radius:8px;font-weight:500;
}
.link-quiet:hover{color:var(--brand);background:var(--brand-soft-2);}
.channel-row{background:#fff;}
.channel-inner{
  display:flex;align-items:center;gap:6px;
  min-height:50px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;flex:none;
  padding:8px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:#41506a;white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.channel:hover{background:var(--brand-soft-2);color:var(--brand);}
.channel.active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.channel.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--brand);
}
.channel.cta-channel{margin-left:auto;color:var(--brand);font-weight:600;}

/* ---------- buttons ---------- */
.btn-brand,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:600;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  cursor:pointer;white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 6px 16px rgba(36,92,166,.22);}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(36,92,166,.28);}
.btn-brand:active{transform:translateY(0);}
.btn-line{background:#fff;color:var(--brand);border-color:#BFD3EC;}
.btn-line:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn-sm-h{height:40px;padding:0 16px;font-size:14.5px;}
.btn-ghost{background:transparent;color:var(--brand);border-color:transparent;padding:0 6px;height:auto;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px;}
.btn-ghost:hover{color:var(--brand-dark);}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:76px 0 88px;overflow:hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(36,92,166,.07) 0 2px, transparent 2px) 0 0/26px 26px,
    linear-gradient(180deg,#FAFCFE 0%, #F5F8FC 100%);
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(36,92,166,.10);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:40px;line-height:1.24;letter-spacing:-.6px;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;color:var(--muted);max-width:600px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13.5px;color:#41506a;font-weight:500;
}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block;flex:none;}
.hero-visual{position:relative;}
.hero-figure{
  border-radius:20px;overflow:hidden;background:var(--brand-soft);
  box-shadow:var(--sh-hover);border:1px solid #fff;
}
.hero-figure img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-badge{
  position:absolute;left:-16px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:14px 18px;box-shadow:var(--sh);max-width:280px;
}
.hero-badge strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px;}
.hero-badge span{font-size:13px;color:var(--muted);line-height:1.6;display:block;}

/* ---------- story ---------- */
.story{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.story-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start;}
.story p+p{margin-top:16px;}
.story p{color:#41506a;}
.story-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);border:1px solid var(--line);}
.story-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.point-list{margin-top:26px;display:grid;gap:16px;}
.point{
  display:flex;gap:14px;padding:16px 18px;background:var(--brand-soft-2);
  border:1px solid var(--line);border-radius:var(--r-md);
}
.point-ico{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;flex:none;color:var(--brand);
}
.point-ico svg{width:18px;height:18px;}
.point h4{font-size:16px;margin-bottom:3px;}
.point p{font-size:14.5px;color:var(--muted);line-height:1.65;}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.bento-side{display:grid;gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.card-media{overflow:hidden;background:var(--brand-soft);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px 24px 24px;}
.tag{
  display:inline-flex;align-items:center;border-radius:999px;padding:4px 12px;
  font-size:12.5px;font-weight:600;background:var(--teal-soft);color:#12796B;letter-spacing:.2px;
}
.tag.blue{background:var(--brand-soft);color:var(--brand);}
.tag.amber{background:var(--amber-soft);color:#A96A15;}
.card h3{font-size:21px;margin:12px 0 8px;line-height:1.4;}
.card p{color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-top:14px;}
.bento .card:first-child h3{font-size:25px;}
.bento .card:first-child p{-webkit-line-clamp:3;}

/* ---------- channels grid ---------- */
.chan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.chan-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;
  box-shadow:var(--sh-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;height:100%;
}
.chan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#BFD3EC;}
.chan-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.chan-ico svg{width:22px;height:22px;}
.chan-card h3{font-size:18px;margin-bottom:8px;}
.chan-card p{font-size:14.5px;color:var(--muted);flex:1;}
.chan-card .more{font-size:14px;font-weight:600;color:var(--brand);margin-top:16px;display:inline-flex;align-items:center;gap:6px;}

/* ---------- trust ---------- */
.trust{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.trust-item{display:flex;gap:14px;}
.trust-item .ti-ico{
  width:40px;height:40px;border-radius:11px;background:var(--brand-soft-2);border:1px solid var(--line);
  color:var(--brand);display:flex;align-items:center;justify-content:center;flex:none;
}
.trust-item .ti-ico svg{width:19px;height:19px;}
.trust-item h4{font-size:16px;margin-bottom:2px;}
.trust-item p{font-size:14px;color:var(--muted);line-height:1.6;}

/* ---------- latest / cms ---------- */
.latest-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
.latest-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);
}
.latest-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.latest-feature .lf-body{padding:24px;}
.latest-feature h3{font-size:20px;margin:12px 0 10px;}
.latest-feature p{font-size:14.5px;color:var(--muted);}
.post-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);}
.post-item{
  display:block;padding:22px 24px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.post-item:last-child{border-bottom:none;}
.post-item:hover{background:var(--brand-soft-2);}
.post-item h3{font-size:17.5px;line-height:1.45;margin-bottom:6px;color:var(--ink);}
.post-item:hover h3{color:var(--brand);}
.post-item p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:13px;color:var(--muted);}
.empty-state{
  border:1.5px dashed #BFD3EC;background:var(--brand-soft-2);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
}
.empty-state .empty-ico{
  width:52px;height:52px;border-radius:14px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:var(--brand);
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand);color:#fff;border-radius:22px;padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;max-width:460px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{
  flex:1;min-width:220px;height:46px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.12);color:#fff;padding:0 16px;font-size:15px;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.65);}
.cta-form input:focus{outline:none;background:#fff;color:var(--ink);border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.32);}
.cta-form input:focus::placeholder{color:#93A3B8;}
.cta-form button{
  height:46px;padding:0 24px;border-radius:var(--r-sm);border:none;cursor:pointer;
  background:#fff;color:var(--brand);font-weight:700;font-size:15px;
  transition:transform .18s ease,background .18s ease;
}
.cta-form button:hover{transform:translateY(-1px);background:var(--amber-soft);color:#8A5310;}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.75);width:100%;}
.form-note.ok{color:#B8F0E5;font-weight:600;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:28px;margin-bottom:14px;}
.faq-aside p{color:var(--muted);font-size:15.5px;margin-bottom:22px;}
.accordion-item{border:1px solid var(--line)!important;border-radius:var(--r-md)!important;margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--sh-sm);}
.accordion-button{
  font-size:16.5px;font-weight:600;color:var(--ink);background:#fff;padding:20px 22px;
  box-shadow:none!important;border-radius:var(--r-md)!important;
}
.accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand);}
.accordion-button::after{
  content:"";background-image:none!important;width:12px;height:12px;flex:none;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg);transition:transform .22s ease;margin-left:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.accordion-body{padding:4px 22px 22px;color:#41506a;font-size:15px;line-height:1.8;}

/* ---------- footer ---------- */
.site-footer{background:#EEF4FB;border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-text small{color:var(--muted);}
.footer-brand p{font-size:14.5px;color:var(--muted);margin-top:16px;max-width:320px;line-height:1.7;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink);letter-spacing:.3px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14.5px;color:var(--muted);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width: 1199.98px){
  .brand-text small{display:none;}
}
@media (max-width: 991.98px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .story-grid{grid-template-columns:1fr;gap:36px;}
  .bento{grid-template-columns:1fr;}
  .chan-grid{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .latest-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  h2.h-sec{font-size:26px;}
}
@media (max-width: 767.98px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:16px;}
  .brand-text strong{font-size:16px;}
  .brand-actions .link-quiet{display:none;}
  .hero-badge{left:8px;right:8px;bottom:-14px;max-width:none;}
  .chan-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;border-radius:18px;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .bento .card:first-child h3{font-size:21px;}
  .card h3{font-size:18.5px;}
  .accordion-button{font-size:15.5px;padding:16px 18px;}
  .accordion-body{padding:0 18px 18px;}
  .btn-brand,.btn-line{height:44px;padding:0 18px;font-size:15px;}
}
@media (max-width: 519.98px){
  .hero h1{font-size:26px;line-height:1.32;}
  .hero-actions .btn-brand,.hero-actions .btn-line{width:100%;}
  .cta-form input{min-width:0;}
  .cta-form button{width:100%;}
}

/* roulang page: article */
:root{
  --brand:#245CA6;
  --brand-dark:#1B4680;
  --brand-soft:#EAF1FA;
  --brand-soft-2:#F3F8FE;
  --ink:#142033;
  --ink-2:#22303F;
  --muted:#65758B;
  --teal:#1B9C8A;
  --teal-soft:#E4F5F2;
  --teal-ink:#12786B;
  --warm:#E8A04C;
  --warm-soft:#FCF1E2;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(20,45,80,.08);
  --shadow-hover:0 12px 30px rgba(20,45,80,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,h5{margin:0 0 .6em;font-weight:700;line-height:1.32;color:var(--ink);letter-spacing:.2px;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.3em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  box-shadow:0 1px 0 var(--line);
}
.brand-row{
  position:relative;
  border-bottom:1px solid var(--line);
  background:#fff;
}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:42px;
  height:42px;
  flex:0 0 42px;
  border-radius:12px;
  background:linear-gradient(135deg,#3570BE 0%,#245CA6 100%);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:19px;
  font-weight:700;
  letter-spacing:0;
  box-shadow:0 6px 14px rgba(36,92,166,.24);
}
.brand-text strong{
  display:block;
  font-size:18px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:.3px;
}
.brand-text small{
  display:block;
  margin-top:2px;
  font-size:12px;
  line-height:1.3;
  color:var(--muted);
  letter-spacing:.5px;
}
.brand-actions{
  display:flex;
  align-items:center;
  gap:18px;
}
.link-quiet{
  font-size:14.5px;
  color:#46566B;
  padding:6px 2px;
  border-radius:6px;
}
.link-quiet:hover{color:var(--brand);background:var(--brand-soft);}

.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:1px solid var(--brand);
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;
  box-shadow:0 6px 16px rgba(36,92,166,.22);
}
.btn-brand:hover{
  background:var(--brand-dark);
  border-color:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(36,92,166,.28);
}
.btn-brand:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,92,166,.24);}
.btn-sm-h{height:40px;padding:0 18px;font-size:14.5px;}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  background:#fff;
  color:var(--brand);
  border:1px solid #C6D8EE;
  font-size:15px;
  font-weight:600;
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-ghost:hover{
  background:var(--brand-soft);
  border-color:var(--brand);
  color:var(--brand-dark);
  transform:translateY(-1px);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:14.5px;
  font-weight:600;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.nav-toggle .bars{
  display:inline-block;
  width:16px;
  height:11px;
  border-top:2px solid currentColor;
  border-bottom:2px solid currentColor;
  position:relative;
}
.nav-toggle .bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:50%;
  transform:translateY(-50%);
  border-top:2px solid currentColor;
}

.channel-row{
  background:#fff;
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:6px;
  min-height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel{
  flex:0 0 auto;
  white-space:nowrap;
  padding:8px 15px;
  border-radius:999px;
  font-size:15px;
  color:#46566B;
  font-weight:500;
  line-height:1.5;
  border:1px solid transparent;
}
.channel:hover{
  color:var(--brand);
  background:var(--brand-soft);
}
.channel.active{
  color:var(--brand);
  background:var(--brand-soft);
  font-weight:700;
  box-shadow:inset 0 -2px 0 var(--brand);
}
.channel.cta-channel{
  margin-left:auto;
  color:var(--brand);
  border-color:#C6D8EE;
  font-weight:600;
}
.channel.cta-channel:hover{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
}

/* ---------- 页面主体 ---------- */
.page-main{
  padding:36px 0 76px;
}
.breadcrumb-bar{
  display:flex;
  align-items:center;
  flex-wrap:nowrap;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
  margin-bottom:22px;
  overflow:hidden;
}
.breadcrumb-bar a{color:var(--muted);}
.breadcrumb-bar a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb-bar .sep{color:#B7C5D8;flex:0 0 auto;}
.crumb-current{
  flex:1 1 auto;
  min-width:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--ink);
  font-weight:600;
}

.article-head{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:34px 38px 30px;
  box-shadow:var(--shadow);
  margin-bottom:26px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:var(--teal-soft);
  color:var(--teal-ink);
  line-height:1.6;
}
.tag-blue{
  background:var(--brand-soft);
  color:var(--brand);
}
.article-title{
  font-size:40px;
  line-height:1.28;
  margin:16px 0 18px;
  letter-spacing:.2px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  font-size:13.5px;
  color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C0CDDF;}

.read-hint{
  display:flex;
  gap:12px;
  align-items:flex-start;
  margin:26px 0 0;
  padding:14px 18px;
  border-radius:12px;
  background:var(--brand-soft-2);
  border:1px solid #D8E6F7;
  color:#3B4C63;
  font-size:14px;
  line-height:1.7;
}
.read-hint .hint-icon{
  flex:0 0 22px;
  width:22px;
  height:22px;
  border-radius:50%;
  background:var(--brand);
  color:#fff;
  font-size:12.5px;
  font-weight:700;
  display:grid;
  place-items:center;
  margin-top:2px;
}
.read-hint p{margin:0;}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 322px;
  gap:30px;
  align-items:start;
}

.article-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:34px 38px 38px;
  box-shadow:var(--shadow);
}
.article-body{
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-2);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > :first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:26px;
  margin:36px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  line-height:1.4;
}
.article-body h3{font-size:20.5px;margin:28px 0 12px;}
.article-body h4{font-size:17.5px;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--brand);}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  background:var(--brand-soft);
  border-left:4px solid var(--brand);
  border-radius:0 12px 12px 0;
  color:#2B3B50;
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:20px 0;width:auto;max-width:100%;}
.article-body figure{margin:22px 0;}
.article-body figcaption{
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 13px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--brand-soft);font-weight:600;color:var(--ink);}
.article-body code{
  background:#EEF4FB;
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
  color:var(--brand-dark);
}

.article-foot-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
}

/* ---------- 侧栏 ---------- */
.side-col{min-width:0;}
.side-sticky{position:sticky;top:142px;}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 22px 18px;
  box-shadow:var(--shadow);
  margin-bottom:20px;
}
.side-card h3{
  font-size:16px;
  margin:0 0 14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:4px;
  height:15px;
  border-radius:2px;
  background:var(--brand);
}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{margin-bottom:6px;}
.side-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:9px 12px;
  border-radius:var(--radius-sm);
  color:#3B4C63;
  font-size:14.5px;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.side-list a:hover{
  background:var(--brand-soft);
  color:var(--brand);
  transform:translateX(2px);
}
.side-list a .arrow{color:#A8B8CD;font-size:13px;}
.side-list a:hover .arrow{color:var(--brand);}

.side-note{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
  margin:0;
}
.side-meta{list-style:none;margin:0;padding:0;font-size:14px;color:var(--muted);}
.side-meta li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:8px 0;
  border-bottom:1px dashed #E4EDF7;
}
.side-meta li:last-child{border-bottom:0;}
.side-meta b{color:var(--ink);font-weight:600;}

.side-help{
  background:linear-gradient(160deg,#F2F8FF 0%,#EAF1FA 100%);
  border:1px solid #D5E4F6;
}
.side-help p{font-size:14px;color:#3B4C63;margin-bottom:14px;}
.side-help .btn-brand{width:100%;height:44px;font-size:14.5px;}

/* ---------- 相关频道推荐 ---------- */
.section{padding:56px 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:28px;
  margin:0;
}
.section-head p{
  margin:6px 0 0;
  color:var(--muted);
  font-size:14.5px;
}
.section-head .head-link{
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
}
.section-head .head-link:hover{text-decoration:underline;text-underline-offset:3px;}

.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.rec-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:#C8DAEF;
}
.rec-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EAF1FA;
}
.rec-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.rec-body h3{
  font-size:18px;
  line-height:1.45;
  margin:0;
}
.rec-body p{
  margin:0;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.7;
}
.rec-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:12px;
  border-top:1px solid #EEF4FB;
  font-size:13.5px;
  color:var(--muted);
}
.rec-foot .go{color:var(--brand);font-weight:600;}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin-top:56px;
  background:var(--brand-soft);
  border:1px solid #D5E4F6;
  border-radius:var(--radius-lg);
  padding:34px 38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:24px;
  margin:0 0 8px;
}
.cta-band p{
  margin:0;
  color:#3B4C63;
  font-size:15px;
  max-width:620px;
}
.cta-band .cta-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed #B9CDE6;
  background:var(--brand-soft-2);
  border-radius:var(--radius);
  padding:48px 28px;
  text-align:center;
}
.empty-state .empty-icon{
  width:52px;
  height:52px;
  margin:0 auto 16px;
  border-radius:14px;
  background:#fff;
  border:1px solid #D5E4F6;
  display:grid;
  place-items:center;
  color:var(--brand);
  font-size:22px;
  font-weight:700;
}
.empty-state h2{font-size:20px;margin:0 0 8px;}
.empty-state p{color:var(--muted);font-size:14.5px;margin:0 0 20px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#EEF4FB;
  border-top:1px solid var(--line);
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand .brand{margin-bottom:4px;}
.footer-brand p{
  margin:16px 0 0;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  max-width:330px;
}
.footer-col h4{
  font-size:15px;
  margin:0 0 14px;
  color:var(--ink);
  letter-spacing:.4px;
}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14.5px;
  color:#43536A;
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid #DCE6F2;
  font-size:13.5px;
  color:var(--muted);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{font-size:13.5px;color:var(--muted);}
.fb-links a:hover{color:var(--brand);}

#latest{scroll-margin-top:140px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
  .article-title{font-size:36px;}
}

@media (max-width:991.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-sticky{position:static;}
  .side-col{display:block;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .article-head{padding:28px 26px;}
  .article-card{padding:28px 26px 30px;}
  .article-title{font-size:32px;}
  .section{padding:44px 0 0;}
}

@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-inner{min-height:66px;}
  .brand-text strong{font-size:16.5px;}
  .brand-text small{font-size:11.5px;}
  .brand-mark{width:38px;height:38px;flex-basis:38px;border-radius:11px;font-size:17px;}
  .nav-toggle{display:inline-flex;}
  .brand-actions{
    position:absolute;
    top:70px;
    left:16px;
    right:16px;
    z-index:80;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:14px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:var(--shadow-hover);
  }
  .brand-actions.open{display:flex;}
  .brand-actions .link-quiet{
    padding:10px 12px;
    border-radius:10px;
    font-size:15px;
  }
  .brand-actions .btn-brand{width:100%;}
  .channel{font-size:14px;padding:7px 13px;}
  .channel-inner{min-height:48px;}
  .page-main{padding:24px 0 56px;}
  .article-title{font-size:28px;}
  .article-head{padding:22px 20px;}
  .article-card{padding:22px 20px 26px;}
  .article-body{font-size:16px;line-height:1.8;}
  .article-body h2{font-size:22px;margin:30px 0 14px;}
  .article-body h3{font-size:19px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .breadcrumb-bar{font-size:13px;margin-bottom:16px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:26px 22px;margin-top:40px;}
  .cta-band h2{font-size:21px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn-brand,
  .cta-band .cta-actions .btn-ghost{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:23px;}
  .article-foot-actions .btn-brand,
  .article-foot-actions .btn-ghost{flex:1 1 auto;}
}

@media (max-width:575.98px){
  body{font-size:16px;}
  .brand-text small{display:none;}
  .article-title{font-size:25px;}
  .read-hint{font-size:13.5px;padding:12px 14px;}
  .side-card{padding:18px;}
  .empty-state{padding:36px 18px;}
}

/* roulang page: category1 */
:root{
  --brand:#245CA6;
  --brand-600:#1E4F8F;
  --brand-700:#183F73;
  --brand-soft:#E8F0FA;
  --brand-line:#CFE0F4;
  --teal:#1B9C8A;
  --teal-soft:#E4F5F1;
  --amber:#E8A04C;
  --amber-soft:#FDF1E3;
  --ink:#142033;
  --ink-soft:#3D4C61;
  --muted:#65758B;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --radius-xl:20px;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(20,45,80,.06);
  --shadow:0 8px 24px rgba(20,45,80,.08);
  --shadow-hover:0 12px 30px rgba(20,45,80,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,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:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.sec-head{max-width:780px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,3vw,30px);font-weight:700;letter-spacing:.2px;line-height:1.35}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.8}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:var(--teal-soft);color:#137468;font-size:13px;font-weight:600;letter-spacing:.3px}
.eyebrow.blue{background:var(--brand-soft);color:var(--brand-700)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;box-shadow:0 1px 0 rgba(20,45,80,.06)}
.brand-row{background:#fff;border-bottom:1px solid var(--line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand-mark{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;
  background:linear-gradient(135deg,#2C67B4,#1D4C8C);
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:20px;
  box-shadow:0 6px 16px rgba(36,92,166,.28);
}
.brand-text strong{display:block;font-size:18.5px;font-weight:700;line-height:1.25;letter-spacing:.2px}
.brand-text small{display:block;font-size:12px;color:var(--muted);letter-spacing:.4px;margin-top:2px}
.brand-actions{display:flex;align-items:center;gap:6px}
.link-quiet{font-size:14.5px;color:var(--ink-soft);padding:8px 12px;border-radius:8px;transition:background .2s ease,color .2s ease}
.link-quiet:hover{color:var(--brand);background:var(--brand-soft)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  border:1px solid transparent;transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,92,166,.22)}
.btn-brand:active{background:var(--brand-700);transform:translateY(0)}
.btn-sm-h{height:40px;padding:0 18px;font-size:14.5px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  background:#fff;color:var(--brand);border:1px solid var(--brand-line);
  font-weight:600;font-size:15px;transition:background .2s ease,border-color .2s ease,transform .2s ease,color .2s ease;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-700);transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;
  color:var(--ink-soft);font-size:14px;font-weight:600;
}
.nav-toggle:hover{border-color:var(--brand-line);color:var(--brand);background:var(--brand-soft)}
.mobile-panel{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  box-shadow:var(--shadow);padding:14px;margin-bottom:16px;
}
.mobile-panel a{
  display:block;padding:11px 12px;border-radius:8px;color:var(--ink-soft);font-size:15px;
}
.mobile-panel a:hover{background:var(--brand-soft);color:var(--brand)}
.mobile-panel .mobile-cta{margin-top:8px;background:var(--brand);color:#fff;text-align:center;font-weight:600}
.mobile-panel .mobile-cta:hover{background:var(--brand-600);color:#fff}

.channel-row{background:#fff;border-bottom:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;padding:7px 16px;border-radius:999px;font-size:15px;color:var(--ink-soft);
  transition:background .2s ease,color .2s ease;
}
.channel:hover{background:var(--brand-soft);color:var(--brand)}
.channel.active{background:var(--brand-soft);color:var(--brand-700);font-weight:600}
.channel.cta-channel{margin-left:auto;color:var(--brand);font-weight:600}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B7C5D8}
.crumb .now{color:var(--ink-soft);font-weight:600}

/* ---------- hero ---------- */
.page-hero{padding:56px 0 24px;background:
  radial-gradient(circle at 88% 8%,rgba(36,92,166,.07),transparent 46%),
  radial-gradient(circle at 6% 92%,rgba(27,156,138,.07),transparent 42%);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
.page-hero h1{
  font-size:clamp(28px,4.2vw,40px);font-weight:700;line-height:1.28;letter-spacing:.2px;
  margin:18px 0 0;
}
.page-hero h1 .hl{color:var(--brand)}
.hero-lead{margin-top:18px;color:var(--ink-soft);font-size:16.5px;line-height:1.85;max-width:720px}
.hero-lead + .hero-lead{margin-top:12px;color:var(--muted);font-size:15.5px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.meta-pill{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);font-size:13.5px;box-shadow:var(--shadow-sm);
}
.meta-pill i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block}
.hero-media{position:relative;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow);background:var(--brand-soft);aspect-ratio:16/10}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(232,240,250,.96);border:1px solid var(--brand-line);
  border-radius:var(--radius);padding:14px 16px;font-size:13.5px;color:var(--brand-700);
  box-shadow:var(--shadow-sm);line-height:1.6;
}
.hero-badge strong{display:block;font-size:14.5px;margin-bottom:2px}

/* ---------- filter ---------- */
.filter-wrap{padding:8px 0 0}
.filter-bar{display:flex;gap:10px;overflow-x:auto;padding:10px 0 22px;scrollbar-width:none}
.filter-bar::-webkit-scrollbar{display:none}
.filter-chip{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-soft);font-size:14.5px;transition:all .2s ease;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.filter-chip.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- overview cards ---------- */
.overview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.ov-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.ov-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.ov-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.ov-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.ov-card:hover .ov-media img{transform:scale(1.04)}
.ov-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--teal-soft);color:#137468;font-size:12.5px;font-weight:600;letter-spacing:.3px;
}
.tag.blue{background:var(--brand-soft);color:var(--brand-700)}
.tag.amber{background:var(--amber-soft);color:#A96A16}
.ov-body h3{font-size:21px;font-weight:700;line-height:1.45}
.ov-body p{color:var(--muted);font-size:15px;line-height:1.8}
.mini-list{display:grid;gap:10px;margin-top:4px}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft);line-height:1.7}
.mini-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 3px rgba(36,92,166,.12);
}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  color:var(--brand);padding-top:8px;
}
.card-link:hover{gap:12px;color:var(--brand-700)}
.card-link span.arw{transition:transform .2s ease}

/* ---------- list rows ---------- */
.list-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden}
.list-row{
  display:grid;grid-template-columns:104px 1fr auto;gap:20px;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--line);transition:background .2s ease;
}
.list-row:last-child{border-bottom:none}
.list-row:hover{background:#F7FAFE}
.list-thumb{width:104px;aspect-ratio:16/10;border-radius:var(--radius-sm);overflow:hidden;background:var(--brand-soft)}
.list-thumb img{width:100%;height:100%;object-fit:cover}
.list-main h3{font-size:17.5px;font-weight:700;line-height:1.5}
.list-main p{color:var(--muted);font-size:14.5px;margin-top:6px;line-height:1.75}
.list-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;font-size:12.5px;color:var(--muted);align-items:center}
.list-tags .dot-sep{color:#C3D0E1}
.list-go{
  width:40px;height:40px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--brand-line);color:var(--brand);background:#fff;transition:all .2s ease;
}
.list-row:hover .list-go{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- signal band ---------- */
.signal-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);
  box-shadow:var(--shadow);padding:34px;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.sig-item{display:flex;flex-direction:column;gap:10px}
.sig-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;
}
.sig-item h4{font-size:16px;font-weight:700}
.sig-item p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:48px;align-items:start}
.faq-side h2{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.35}
.faq-side p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.8}
.faq-side .btn-ghost{margin-top:22px}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  margin-bottom:12px;box-shadow:var(--shadow-sm);
}
.accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  background:#fff;color:var(--ink);font-weight:600;font-size:17px;line-height:1.6;
  padding:20px 60px 20px 22px;box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-700)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-button::after{
  background-image:none;content:"+";width:32px;height:32px;flex:0 0 auto;
  display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--brand);font-size:20px;line-height:1;transform:none;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"−";background:var(--brand);border-color:var(--brand);color:#fff;transform:none;
}
.faq-acc .accordion-body{padding:6px 22px 22px;color:var(--muted);font-size:15px;line-height:1.85;background:#fff}
.faq-acc .accordion-body strong{color:var(--ink-soft)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--radius-xl);
  padding:42px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.4;color:var(--brand-700)}
.cta-band p{margin-top:10px;color:#3C567A;font-size:15px;line-height:1.8;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:#EDF3FA;border-top:1px solid var(--line);margin-top:88px;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:18px;max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--ink)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--muted);font-size:14.5px;transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;
  border-top:1px solid var(--line);margin-top:44px;padding-top:22px;font-size:13.5px;color:var(--muted);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:var(--muted);font-size:13.5px}
.fb-links a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .signal-band{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .brand-actions{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .overview-grid{grid-template-columns:1fr}
  .list-row{grid-template-columns:1fr auto;gap:14px;padding:18px}
  .list-thumb{display:none}
  .signal-band{grid-template-columns:1fr;padding:24px;gap:22px}
  .cta-band{padding:28px}
  .footer-grid{grid-template-columns:1fr}
  .brand-text strong{font-size:16.5px}
  .brand-text small{font-size:11px}
  .brand-mark{width:38px;height:38px;font-size:18px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .page-hero{padding:36px 0 12px}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --brand:#245CA6;
  --brand-dark:#1B4780;
  --brand-soft:#E8F0FB;
  --ink:#142033;
  --muted:#65758B;
  --teal:#1B9C8A;
  --teal-soft:#E3F5F1;
  --amber:#E8A04C;
  --amber-soft:#FDF1E2;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow:0 8px 24px rgba(20,45,80,.08);
  --shadow-hover:0 12px 30px rgba(20,45,80,.12);
  --space-y:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--brand-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4,h5{margin:0 0 .6em;font-weight:700;line-height:1.32;letter-spacing:-.2px;color:var(--ink)}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0 0 1em;max-width:820px}
ul,ol{margin:0 0 1em;padding-left:1.2em}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:relative;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.brand-row{background:#fff}
.brand-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:13px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 6px 16px rgba(36,92,166,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text small{font-size:12.5px;color:var(--muted);letter-spacing:.3px;margin-top:2px}
.brand-actions{display:flex;align-items:center;gap:20px}
.link-quiet{font-size:14.5px;color:#3B4A5F;font-weight:500;padding:6px 2px;border-bottom:1px solid transparent}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--brand)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15.5px;font-weight:600;border:1px solid var(--brand);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;
  box-shadow:0 6px 16px rgba(36,92,166,.22);
}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,71,128,.28)}
.btn-brand:active{transform:translateY(0)}
.btn-sm-h{height:42px;padding:0 18px;font-size:15px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 20px;border-radius:var(--r-btn);
  background:#fff;color:var(--brand);border:1px solid #B9CEE9;font-size:15.5px;font-weight:600;
  transition:background-color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  border:1px solid #C9DBF1;color:var(--brand);font-size:14px;font-weight:600;
}
.channel-row{background:#fff;border-top:1px solid transparent;box-shadow:0 6px 18px rgba(20,45,80,.04)}
.channel-inner{display:flex;align-items:center;gap:6px;height:54px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 15px;
  border-radius:999px;font-size:15px;font-weight:500;color:#3B4A5F;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.channel:hover{background:#F0F5FC;color:var(--brand)}
.channel.active{background:var(--brand-soft);color:var(--brand);font-weight:700;box-shadow:inset 0 0 0 1px #C9DBF1}
.channel.cta-channel{margin-left:auto;color:var(--brand);font-weight:600;border:1px solid #C9DBF1}
.channel.cta-channel:hover{background:var(--brand-soft)}
.mobile-brand-menu{background:#fff;border-top:1px solid var(--line)}
.mobile-brand-menu .inner{padding:14px 0 18px;display:flex;flex-wrap:wrap;gap:10px}
.mobile-brand-menu a{display:inline-flex;align-items:center;height:42px;padding:0 16px;border-radius:10px;background:#F2F6FC;font-size:15px;font-weight:500;color:#3B4A5F}
.mobile-brand-menu a.primary{background:var(--brand);color:#fff}

/* ---------- page band ---------- */
.page-band{
  position:relative;
  background-image:linear-gradient(180deg,rgba(245,248,252,.94),rgba(245,248,252,.99)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:36px 0 56px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:26px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B7C5D8}
.crumb .current{color:#8A99AD}
.cat-hero{max-width:860px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--teal-soft);color:#12796B;font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:18px;
}
.cat-hero h1{font-size:40px;margin-bottom:16px}
.cat-hero h1 .thin{color:var(--brand)}
.cat-lead{font-size:17.5px;color:#39485C;max-width:800px;margin-bottom:14px}
.cat-desc{font-size:15.5px;color:var(--muted);max-width:800px;margin-bottom:26px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:#3B4A5F;font-size:14px;font-weight:500;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease,transform .18s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.tag.accent{background:var(--brand-soft);border-color:#C9DBF1;color:var(--brand);font-weight:600}

/* ---------- main layout ---------- */
.section{padding:var(--space-y) 0}
.section.tight{padding:64px 0}
.topic-wrap{padding:64px 0 88px}
.topic-layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:36px;align-items:start}

/* sticky toc */
.toc-card{
  position:sticky;top:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:22px 20px;
}
.toc-card h2{font-size:15px;letter-spacing:.6px;color:var(--muted);text-transform:uppercase;font-weight:700;margin-bottom:14px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:15px;color:#39485C;font-weight:500;
}
.toc-list a:hover{background:#F2F6FC;color:var(--brand)}
.toc-list a .dot{width:6px;height:6px;border-radius:50%;background:#C3D3E6;flex:0 0 6px}
.toc-list a:hover .dot{background:var(--brand)}
.toc-note{
  margin-top:18px;padding:14px 14px;border-radius:12px;background:var(--amber-soft);
  border:1px dashed #F0CFA4;font-size:13.5px;line-height:1.7;color:#7A5626;
}
.toc-note strong{display:block;color:#8A5D1E;margin-bottom:4px;font-size:14px}
.toc-actions{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.toc-actions .btn-brand,.toc-actions .btn-ghost{width:100%;height:44px;font-size:15px}

/* content blocks */
.block{margin-bottom:56px}
.block:last-child{margin-bottom:0}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.block-head h2{font-size:28px;margin-bottom:6px}
.block-head p{font-size:15px;color:var(--muted);margin:0;max-width:620px}
.block-link{font-size:14.5px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(36,92,166,.35);padding-bottom:2px}
.block-link:hover{border-bottom-color:var(--brand)}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:22px}
.main-card{
  grid-row:span 2;display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.main-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.main-card .thumb{overflow:hidden}
.main-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.main-card:hover img{transform:scale(1.04)}
.main-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.main-card h3{font-size:23px;margin:0}
.main-card p{font-size:15px;color:var(--muted);margin:0}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:#8A99AD}

.side-card{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.side-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9DBF1}
.side-card .thumb{flex:0 0 116px;border-radius:12px;overflow:hidden}
.side-card img{width:100%;height:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .4s ease}
.side-card:hover img{transform:scale(1.05)}
.side-card .body{display:flex;flex-direction:column;gap:6px;justify-content:center;min-width:0}
.side-card h3{font-size:16.5px;margin:0;line-height:1.45}
.side-card p{font-size:13.5px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--teal-soft);color:#12796B;font-size:12.5px;font-weight:600;
}
.badge-blue{background:var(--brand-soft);color:var(--brand)}
.badge-amber{background:var(--amber-soft);color:#8A5D1E}

/* topic list */
.topic-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.topic-item{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:18px;align-items:center;
  padding:20px 16px;border-bottom:1px solid var(--line);border-radius:12px;
  transition:background-color .18s ease,transform .18s ease;
}
.topic-item:hover{background:#F7FAFE;transform:translateX(3px)}
.topic-item .thumb{border-radius:12px;overflow:hidden;aspect-ratio:4/3}
.topic-item img{width:100%;height:100%;object-fit:cover}
.topic-item h3{font-size:18px;margin:0 0 6px}
.topic-item p{font-size:14px;color:var(--muted);margin:0;max-width:560px}
.topic-item .go{
  display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 16px;
  border-radius:10px;border:1px solid #C9DBF1;background:#fff;color:var(--brand);
  font-size:14px;font-weight:600;white-space:nowrap;transition:background-color .18s ease,border-color .18s ease;
}
.topic-item:hover .go{background:var(--brand);border-color:var(--brand);color:#fff}

/* rules block */
.rules-card{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:28px;
}
.rules-card h3{font-size:20px;margin-bottom:14px}
.rules-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:16px}
.rules-list li{display:flex;gap:14px;align-items:flex-start}
.rules-list .num{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;background:var(--brand-soft);
  color:var(--brand);font-weight:700;font-size:14px;display:grid;place-items:center;
}
.rules-list strong{display:block;font-size:16px;margin-bottom:2px}
.rules-list span{font-size:14px;color:var(--muted);line-height:1.7}
.rules-img{border-radius:14px;overflow:hidden;align-self:start}
.rules-img img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* faq */
.faq-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:10px 24px;box-shadow:var(--shadow)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;transition:color .18s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q::after{
  content:"+";flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-size:18px;font-weight:700;
  display:grid;place-items:center;line-height:1;transition:background-color .18s ease,color .18s ease;
}
.faq-q:not(.collapsed){color:var(--brand)}
.faq-q:not(.collapsed)::after{content:"−";background:var(--brand);color:#fff}
.faq-a{padding:0 4px 22px;font-size:15.5px;color:#43536A;line-height:1.8;max-width:760px}
.faq-a p:last-child{margin-bottom:0}

/* enter cta card */
.enter-card{
  background:#EAF2FC;border:1px solid #C9DBF1;border-radius:var(--r-card);
  padding:34px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.enter-card h2{font-size:26px;margin-bottom:8px}
.enter-card p{margin:0;color:#4A5B72;font-size:15.5px;max-width:560px}
.enter-actions{display:flex;gap:12px;flex-wrap:wrap}

/* cta band */
.cta-band{background:#EAF2FC;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;margin-bottom:6px}
.cta-inner p{margin:0;color:#4A5B72;font-size:15.5px}

/* footer */
.site-footer{background:#F0F5FB;border-top:1px solid var(--line);padding:64px 0 24px;color:#3B4A5F}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:14.5px;color:var(--muted);margin:16px 0 0;line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:16px;font-weight:700;letter-spacing:.3px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:#4A5B72}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #DBE6F2;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#7C8CA0;
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap}
.fb-links a{color:#7C8CA0}
.fb-links a:hover{color:var(--brand)}

/* responsive */
@media (max-width:1199.98px){
  .topic-layout{gap:26px}
  .rules-card{grid-template-columns:minmax(0,1fr) 250px}
}
@media (max-width:991.98px){
  :root{--space-y:72px}
  h1,.cat-hero h1{font-size:33px}
  .feature-grid{grid-template-columns:1fr}
  .main-card{grid-row:auto}
  .topic-layout{grid-template-columns:1fr;gap:22px}
  .toc-card{position:static}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}
  .toc-list a{white-space:nowrap;background:#F2F6FC;padding:9px 14px}
  .toc-list a .dot{display:none}
  .rules-card{grid-template-columns:1fr}
  .rules-img{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .brand-actions{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:767.98px){
  .container{padding:0 16px}
  :root{--space-y:60px}
  h1,.cat-hero h1{font-size:29px}
  h2,.block-head h2{font-size:24px}
  .cat-lead{font-size:16px}
  .page-band{padding:26px 0 40px}
  .topic-wrap{padding:40px 0 60px}
  .topic-item{grid-template-columns:72px minmax(0,1fr);gap:14px;padding:16px 10px}
  .topic-item .go{display:none}
  .side-card{flex-direction:column}
  .side-card .thumb{flex:0 0 auto;width:100%}
  .side-card img{aspect-ratio:16/9}
  .enter-card{padding:24px}
  .faq-wrap{padding:6px 16px}
  .faq-q{font-size:16px;padding:18px 2px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:44px 0}
}
@media (max-width:519.98px){
  .brand-text small{display:none}
  .brand-text strong{font-size:16px}
  .brand-mark{width:40px;height:40px;flex:0 0 40px;font-size:18px}
  .channel{font-size:14px;padding:0 13px}
  .enter-actions .btn-brand,.enter-actions .btn-ghost{width:100%}
}

/* roulang page: category3 */
:root{
  --brand:#245CA6;
  --brand-dark:#1B4784;
  --brand-light:#E8F0FA;
  --brand-line:#CFE0F4;
  --teal:#1B9C8A;
  --teal-light:#E4F5F2;
  --amber:#E8A04C;
  --amber-light:#FDF1E3;
  --amber-line:#F3D9B8;
  --ink:#142033;
  --muted:#65758B;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(20,45,80,.08);
  --shadow-hover:0 12px 30px rgba(20,45,80,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
p{margin:0 0 16px}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
h1{font-size:40px;letter-spacing:-.4px}
h2{font-size:30px;letter-spacing:-.2px}
h3{font-size:22px}
h4{font-size:18px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:800px;margin-bottom:40px}
.section-head p{color:var(--muted);margin:14px 0 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow-teal{color:#137a6c;background:var(--teal-light)}

/* ---------- header ---------- */
.site-header{position:relative;z-index:50;background:#fff}
.brand-row{background:#fff;border-bottom:1px solid var(--line)}
.brand-inner{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;min-height:72px;gap:12px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;
  border-radius:13px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 16px rgba(36,92,166,.28);
}
.brand-text strong{display:block;font-size:17px;font-weight:700;line-height:1.35;letter-spacing:.2px}
.brand-text small{display:block;font-size:12px;color:var(--muted);line-height:1.5;letter-spacing:.3px}
.brand-actions{display:flex;align-items:center;gap:20px}
.link-quiet{font-size:15px;color:#3B4A60;font-weight:500}
.link-quiet:hover{color:var(--brand)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,92,166,.28)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;
  border:1px solid var(--brand);cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;
  border:1px solid var(--line);cursor:pointer;transition:background .2s ease,border-color .2s ease;
}
.btn-soft:hover{background:var(--brand-light);border-color:var(--brand-line);color:var(--brand)}
.btn-sm-h{height:40px;padding:0 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--brand);
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-menu{padding:8px 0 18px;border-top:1px solid var(--line);margin-top:10px}
.mobile-menu a{display:block;padding:11px 4px;font-size:15px;color:#3B4A60;font-weight:500;border-bottom:1px solid #EEF3FA}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu a:hover{color:var(--brand)}
.channel-row{background:#fff;border-bottom:1px solid var(--line)}
.channel-inner{
  display:flex;align-items:center;gap:6px;
  height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;color:#3B4A60;font-size:15px;font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.channel:hover{background:var(--brand-light);color:var(--brand)}
.channel.active{background:var(--brand-light);color:var(--brand);font-weight:700}
.channel.cta-channel{margin-left:auto;color:var(--brand);font-weight:600}
.channel.cta-channel:hover{background:var(--brand);color:#fff}

/* ---------- hero ---------- */
.page-hero{padding:56px 0 72px;background:#fff;border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:26px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#B4C2D4}
.crumbs .current{color:var(--muted)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:start}
.hero-copy h1{margin-bottom:18px}
.hero-lead{font-size:18px;line-height:1.75;color:#33445C;margin:0}
.hero-desc{font-size:16px;color:var(--muted);margin:16px 0 0}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#fff}
.hero-figure img{width:100%;height:340px;object-fit:cover}
.hero-badge{
  position:absolute;left:18px;bottom:18px;
  background:#fff;border-radius:var(--radius);border:1px solid var(--line);
  padding:12px 16px;box-shadow:0 8px 20px rgba(20,45,80,.12);
  display:flex;align-items:center;gap:12px;
}
.hero-badge .dot{width:10px;height:10px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(27,156,138,.16)}
.hero-badge strong{display:block;font-size:14px;line-height:1.4}
.hero-badge span{font-size:12.5px;color:var(--muted)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;background:var(--brand-light);color:var(--brand);
  font-size:13px;font-weight:600;
}
.chip.teal{background:var(--teal-light);color:#137a6c}
.chip.is-current{background:var(--brand);color:#fff}

/* ---------- steps ---------- */
.step-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.step-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px 22px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:var(--brand-light);
  color:var(--brand);font-weight:700;font-size:15px;margin-bottom:14px;
}
.step-item h3{font-size:18px;margin-bottom:8px}
.step-item p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- detail grid ---------- */
.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:36px;align-items:start}
.timeline{display:grid;gap:4px}
.tl-item{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:22px;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item:not(:last-child)::before{
  content:"";position:absolute;left:27px;top:64px;bottom:0;width:2px;background:var(--line);
}
.tl-badge{
  width:56px;height:56px;border-radius:16px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;position:relative;z-index:1;
  box-shadow:0 8px 18px rgba(36,92,166,.22);
}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 26px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.tl-body h3{font-size:20px;margin-bottom:10px}
.tl-body p{font-size:15.5px;color:#3A4A60;margin:0 0 12px}
.tl-body p:last-child{margin-bottom:0}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--bg);border:1px solid var(--line);
  color:var(--muted);font-size:12.5px;font-weight:500;
}
.tag.teal{background:var(--teal-light);border-color:#BFE6DF;color:#137a6c}
.aside-stack{position:sticky;top:24px;display:grid;gap:18px}
.note-card{
  background:var(--brand-light);border:1px solid var(--brand-line);
  border-radius:var(--radius-lg);padding:22px 22px;
}
.note-card h4{font-size:16px;margin-bottom:10px;color:var(--brand-dark)}
.note-card p{font-size:14.5px;color:#33455E;margin:0 0 10px}
.note-card p:last-child{margin-bottom:0}
.note-card.warm{background:var(--amber-light);border-color:var(--amber-line)}
.note-card.warm h4{color:#9A5F17}
.note-card.teal{background:var(--teal-light);border-color:#BFE6DF}
.note-card.teal h4{color:#137a6c}
.note-card ul{display:grid;gap:9px;margin-top:6px}
.note-card ul li{
  position:relative;padding-left:18px;font-size:14.5px;color:#33455E;line-height:1.7;
}
.note-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.55;
}
.note-card.teal ul li::before{background:var(--teal)}
.note-card.warm ul li::before{background:var(--amber)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.check-card .ico{
  width:44px;height:44px;border-radius:13px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;margin-bottom:16px;
}
.check-card h3{font-size:18px;margin-bottom:8px}
.check-card p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:48px;align-items:start}
.faq-layout .section-head{margin-bottom:0}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  margin-bottom:12px;background:#fff;box-shadow:0 4px 14px rgba(20,45,80,.05);
}
.faq-accordion .accordion-button{
  font-size:16px;font-weight:600;color:var(--ink);background:#fff;
  padding:18px 20px;box-shadow:none;border:0;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){background:var(--brand-light);color:var(--brand-dark)}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(36,92,166,.18);z-index:2}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;transform:none;
  width:26px;height:26px;flex:0 0 26px;margin-left:auto;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;
  color:var(--brand);font-size:17px;font-weight:400;line-height:1;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";transform:none;background:var(--brand);color:#fff;border-color:var(--brand);
}
.faq-accordion .accordion-body{
  padding:4px 20px 22px;font-size:15.5px;color:#3A4A60;line-height:1.8;
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);color:var(--ink);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:var(--ink);border-color:var(--brand-line)}
.rel-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-light)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-media img{transform:scale(1.05)}
.rel-body{padding:22px 22px 24px}
.rel-body h3{font-size:18px;margin:10px 0 8px}
.rel-body p{font-size:14.5px;color:var(--muted);margin:0}
.rel-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:14px}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand);color:#fff;border-radius:20px;
  padding:44px 44px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:28px;align-items:center;box-shadow:0 16px 40px rgba(36,92,166,.28);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15.5px;max-width:640px}
.cta-band .btn-row{margin-top:0}
.cta-band .btn-white{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  background:#fff;color:var(--brand);font-weight:700;font-size:15px;
  border:1px solid #fff;transition:background .2s ease,transform .2s ease,color .2s ease;
}
.cta-band .btn-white:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.cta-band .btn-ghost-w{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  background:transparent;color:#fff;font-weight:600;font-size:15px;
  border:1px solid rgba(255,255,255,.65);transition:background .2s ease,color .2s ease;
}
.cta-band .btn-ghost-w:hover{background:rgba(255,255,255,.14);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:#14263F;color:#C7D5E6;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 44px;
}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text small{color:#8FA5BF}
.footer-brand p{font-size:14.5px;color:#9FB3CB;margin:18px 0 0;max-width:360px;line-height:1.8}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14.5px;color:#A9BDD4}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:#8FA5BF;
}
.fb-links{display:flex;flex-wrap:wrap;gap:20px}
.fb-links a{color:#9FB3CB}
.fb-links a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:40px}
  .detail-grid{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
}
@media (max-width:991.98px){
  h1{font-size:34px}
  h2{font-size:27px}
  .section{padding:68px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure img{height:280px}
  .step-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .detail-grid{grid-template-columns:1fr}
  .aside-stack{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .nav-toggle{display:inline-flex}
  .brand-actions .link-quiet{display:none}
  .cta-band{grid-template-columns:1fr;padding:36px 32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding:0 16px}
  h1{font-size:29px}
  h2{font-size:24px}
  h3{font-size:19px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 56px}
  .hero-lead{font-size:16.5px}
  .brand-inner{min-height:66px}
  .brand-text strong{font-size:15.5px}
  .brand-text small{font-size:11.5px}
  .brand-mark{width:40px;height:40px;flex:0 0 40px;font-size:18px;border-radius:12px}
  .channel-inner{height:48px}
  .channel{font-size:14.5px;padding:0 14px}
  .aside-stack{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:44px minmax(0,1fr);gap:16px}
  .tl-badge{width:44px;height:44px;border-radius:13px;font-size:15px}
  .tl-item:not(:last-child)::before{left:21px;top:52px}
  .tl-body{padding:20px}
  .step-strip{grid-template-columns:1fr}
  .cta-band{padding:30px 24px;border-radius:16px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519.98px){
  .btn-row .btn-brand,.btn-row .btn-outline,.btn-row .btn-soft{width:100%}
  .hero-figure img{height:220px}
  .hero-badge{left:12px;right:12px;bottom:12px}
}

/* roulang page: category4 */
:root{
  --brand:#245CA6;
  --brand-600:#1F4F91;
  --brand-700:#1B4680;
  --brand-050:#EAF1FA;
  --brand-100:#D8E6F7;
  --ink:#142033;
  --ink-2:#33415C;
  --muted:#65758B;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#DCE6F2;
  --teal:#1B9C8A;
  --teal-050:#E6F6F3;
  --amber:#E8A04C;
  --amber-050:#FDF2E4;
  --r-lg:18px;
  --r:14px;
  --r-btn:10px;
  --shadow:0 8px 24px rgba(20,45,80,.08);
  --shadow-h:0 12px 30px rgba(20,45,80,.12);
  --section-y:92px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;letter-spacing:-.01em;margin:0;line-height:1.35;}
h1{font-size:clamp(28px,3.6vw,42px);line-height:1.28;}
h2{font-size:clamp(24px,2.4vw,30px);}
h3{font-size:21px;}
h4{font-size:17px;}
p{margin:0 0 1em;max-width:820px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;box-shadow:0 1px 0 rgba(20,45,80,.06);}
.brand-row{background:#fff;}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;flex-wrap:wrap;}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(140deg,#2E6BBE,#245CA6);color:#fff;display:grid;place-items:center;font-weight:700;font-size:20px;box-shadow:0 6px 14px rgba(36,92,166,.28);flex:0 0 42px;}
.brand-text{display:flex;flex-direction:column;line-height:1.22;}
.brand-text strong{font-size:18px;letter-spacing:.01em;}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.02em;}
.brand-actions-wrap{margin-left:auto;}
.brand-actions{display:flex;align-items:center;gap:20px;}
.link-quiet{color:var(--ink-2);font-size:15px;font-weight:500;position:relative;}
.link-quiet:hover{color:var(--brand);}
.link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;}
.link-quiet:hover::after{transform:scaleX(1);}
.btn-brand{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);background:var(--brand);color:#fff;font-weight:600;font-size:15px;border:1px solid var(--brand);cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease;white-space:nowrap;}
.btn-brand:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(36,92,166,.24);}
.btn-brand:active{transform:translateY(0);background:var(--brand-700);}
.btn-sm-h{height:40px;padding:0 18px;font-size:14.5px;}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);background:#fff;color:var(--brand);border:1px solid var(--brand-100);font-weight:600;font-size:15px;cursor:pointer;transition:.18s;}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand);color:var(--brand-700);}
.menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:16px;cursor:pointer;}
.menu-toggle:hover{background:var(--brand-050);color:var(--brand);border-color:var(--brand-100);}
.channel-row{background:#fff;border-top:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;color:var(--ink-2);font-size:15px;white-space:nowrap;transition:background .18s ease,color .18s ease;}
.channel:hover{background:var(--brand-050);color:var(--brand);}
.channel.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.channel.cta-channel{margin-left:auto;color:var(--brand);border:1px solid var(--brand-100);}
.channel.cta-channel:hover{background:var(--brand-050);}

/* ---------- page hero ---------- */
.page-hero{position:relative;padding:42px 0 54px;background:linear-gradient(180deg,#EFF5FD 0%,rgba(245,248,252,0) 100%);overflow:hidden;}
.page-hero::before{content:"";position:absolute;right:-140px;top:-120px;width:560px;height:560px;border-radius:50%;background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;opacity:.12;pointer-events:none;}
.page-hero::after{content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;border:1px solid var(--brand-100);opacity:.6;pointer-events:none;}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.breadcrumb-line a{color:var(--muted);}
.breadcrumb-line a:hover{color:var(--brand);}
.breadcrumb-line .sep{color:#AEBCCE;}
.breadcrumb-line .current{color:var(--muted);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:var(--teal-050);color:#157F71;font-size:13px;font-weight:600;letter-spacing:.02em;}
.page-hero h1{margin-top:16px;max-width:860px;}
.page-lead{font-size:17px;color:var(--ink-2);max-width:800px;margin-top:16px;}
.hero-note{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:22px 24px;}
.hero-note h2{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.hero-note h2 i{color:var(--brand);}
.hero-note ol{list-style:none;counter-reset:hn;display:grid;gap:12px;}
.hero-note li{counter-increment:hn;display:flex;gap:12px;font-size:14.5px;color:var(--ink-2);line-height:1.6;}
.hero-note li::before{content:counter(hn);flex:0 0 24px;width:24px;height:24px;border-radius:8px;background:var(--brand-050);color:var(--brand);font-size:12.5px;font-weight:700;display:grid;place-items:center;margin-top:2px;}
.channel-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14.5px;transition:.18s;}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050);}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

/* ---------- sections ---------- */
.section{padding:var(--section-y) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:36px;}
.section-head h2{margin-bottom:12px;}
.section-sub{color:var(--muted);font-size:16px;}

/* ---------- resource cards ---------- */
.res-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.res-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.res-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#C7D9EF;}
.res-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050);}
.res-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.res-card:hover .res-thumb img{transform:scale(1.05);}
.res-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1;}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--teal-050);color:#157F71;font-size:12.5px;font-weight:600;align-self:flex-start;}
.tag-blue{background:var(--brand-050);color:var(--brand);}
.res-body h3{font-size:17.5px;}
.res-body p{font-size:14.5px;color:var(--muted);margin:0;}
.card-link{margin-top:auto;padding-top:6px;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.card-link i{font-size:12px;transition:transform .2s ease;}
.res-card:hover .card-link i{transform:translateX(3px);}

/* ---------- contact form ---------- */
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:26px 26px 24px;position:sticky;top:100px;}
.contact-card h2{font-size:21px;margin-bottom:8px;}
.contact-card .form-intro{font-size:14.5px;color:var(--muted);margin-bottom:20px;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.form-control,.form-select{display:block;width:100%;height:46px;border-radius:10px;border:1px solid var(--line);background-color:#FBFDFF;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;}
.form-select{appearance:none;-webkit-appearance:none;padding-right:38px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2365758B' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.65;resize:vertical;}
.form-control::placeholder{color:#9AA9BC;}
.form-control:focus,.form-select:focus{outline:none;border-color:var(--brand);background-color:#fff;box-shadow:0 0 0 3px rgba(36,92,166,.16);}
.form-actions{margin-top:4px;}
.form-actions .btn-brand{width:100%;}
.form-note{margin-top:12px;font-size:13px;color:var(--muted);line-height:1.65;}
.alert-succ{display:none;margin-top:16px;padding:12px 14px;border-radius:10px;border:1px solid #B7E3DA;background:var(--teal-050);color:#136C60;font-size:14px;}
.alert-succ.show{display:block;}

/* ---------- fit list ---------- */
.fit-list{list-style:none;display:grid;gap:14px;}
.fit-item{display:flex;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;}
.fit-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);}
.fit-icon{flex:0 0 40px;width:40px;height:40px;border-radius:10px;background:var(--brand-050);color:var(--brand);display:grid;place-items:center;font-size:16px;}
.fit-item h4{font-size:16px;margin-bottom:2px;}
.fit-item p{font-size:14.5px;color:var(--muted);margin:0;}
.body-copy p{color:var(--ink-2);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);}
.step-num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;font-weight:700;font-size:15px;margin-bottom:14px;}
.step h3{font-size:17.5px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);margin:0;}
.step::after{content:"";position:absolute;right:22px;top:26px;width:22px;height:2px;background:var(--brand-100);}
.step:last-child::after{display:none;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:320px minmax(0,1fr);gap:44px;align-items:start;}
.faq-side h2{margin-bottom:14px;}
.faq-side p{color:var(--muted);font-size:15px;}
.faq-side .btn-ghost{margin-top:18px;}
.accordion-item{border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow);margin-bottom:12px;overflow:hidden;}
.accordion-item:first-of-type,.accordion-item:last-of-type{border-radius:var(--r);}
.accordion-button{width:100%;text-align:left;font-size:16px;font-weight:600;color:var(--ink);background:#fff;padding:18px 52px 18px 20px;border:0;box-shadow:none;transition:background .18s ease,color .18s ease;}
.accordion-button:not(.collapsed){background:var(--brand-050);color:var(--brand);box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px;}
.accordion-button::after{content:"";width:11px;height:11px;background:none;background-image:none;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .2s ease,border-color .2s ease;margin-right:6px;}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--brand);}
.accordion-body{padding:16px 20px 20px;font-size:15.5px;color:var(--ink-2);background:#fff;}

/* ---------- cta ---------- */
.cta-band{background:#E9F1FB;border:1px solid #D2E1F4;border-radius:var(--r-lg);padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{color:var(--ink-2);font-size:15.5px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:#EDF3FA;border-top:1px solid var(--line);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:38px;}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:340px;line-height:1.8;}
.footer-col h4{font-size:15px;margin-bottom:14px;}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col a{color:var(--muted);font-size:14.5px;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:44px;padding-top:20px;font-size:13.5px;color:var(--muted);}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{color:var(--muted);}
.fb-links a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .faq-wrap{grid-template-columns:280px minmax(0,1fr);gap:32px;}
}
@media (max-width:991.98px){
  :root{--section-y:64px;}
  .menu-toggle{display:inline-flex;}
  .brand-inner{min-height:66px;}
  .brand-actions-wrap{flex-basis:100%;margin-left:0;}
  .brand-actions{flex-direction:column;align-items:stretch;gap:6px;padding:12px 0 18px;margin-top:4px;border-top:1px solid var(--line);}
  .brand-actions .link-quiet{padding:10px 2px;font-size:15px;}
  .brand-actions .btn-brand{width:100%;margin-top:6px;}
  .contact-card{position:static;margin-top:24px;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:26px;}
  .hero-note{margin-top:24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
}
@media (max-width:767.98px){
  .steps{grid-template-columns:minmax(0,1fr);}
  .step::after{display:none;}
  .cta-band{padding:28px 24px;border-radius:var(--r);}
  .res-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .res-body{padding:14px 14px 16px;}
  .res-body h3{font-size:16px;}
}
@media (max-width:575.98px){
  :root{--section-y:56px;}
  .container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .page-hero{padding:30px 0 40px;}
  .res-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .channel-inner{height:48px;}
  .contact-card{padding:20px;}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%;}
  .breadcrumb-line{font-size:13px;}
}