/* roulang page: index */
:root{
  --brand:#2873A0;
  --brand-dark:#195E88;
  --brand-soft:#E7F1F8;
  --accent:#E06E42;
  --accent-dark:#C5532F;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text-main:#1E2A38;
  --text-muted:#5F7487;
  --border:#DEE7EF;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(23,71,100,.06);
  --shadow-hover:0 14px 34px rgba(23,71,100,.12);
  --font-main:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",system-ui,-apple-system,sans-serif;
  --section-space:90px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text-main);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
p{margin:0 0 1rem}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.35;color:var(--text-main);margin-top:0}
button{border:0;background:none}
ul{padding-left:0;margin-bottom:0}
.container{max-width:1200px}
section{position:relative}
.fw-600{font-weight:600}
.text-muted-custom{color:var(--text-muted)}

/* ===== Bootstrap override ===== */
.btn{border:0;border-radius:14px;font-weight:600;letter-spacing:.01em;transition:all .22s ease;padding:12px 24px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn:focus,.btn-ghost:focus,.btn-accent:focus{outline:2px solid var(--accent);outline-offset:3px;box-shadow:none}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(224,110,66,.22)}
.btn-accent:hover,.btn-accent:active{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(224,110,66,.30)}
.btn-ghost{background:var(--surface);color:var(--brand);border:1px solid #BFD3E1}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 8px 16px rgba(40,115,160,.12)}
.btn-lg{padding:15px 30px;font-size:17px}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:1050;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border);
  box-shadow:0 4px 18px rgba(23,71,100,.04);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(40,115,160,.25);
}
.brand-mark i{color:#fff;font-size:19px}
.brand-text{
  font-size:20px;font-weight:700;color:var(--text-main);letter-spacing:.5px;white-space:nowrap;
}
.brand-text small{
  display:block;font-size:11px;font-weight:500;color:var(--text-muted);letter-spacing:.2px
}
.main-nav{display:flex;align-items:center;gap:14px}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0}
.nav-links li a{
  display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--radius-pill);
  color:var(--text-main);font-weight:500;font-size:15px;line-height:1.4;white-space:nowrap;
  transition:background .2s,color .2s
}
.nav-links li a:hover{color:var(--brand-dark);background:#F0F5F9}
.nav-links li.active a{background:var(--brand-soft);color:var(--brand-dark);font-weight:700}
.menu-toggle{
  width:46px;height:46px;border-radius:12px;background:var(--brand-soft);
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;margin-left:auto
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--brand-dark);border-radius:2px;transition:.3s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Footer ===== */
.site-footer{background:#EAF2F7;margin-top:0;padding-top:64px;border-top:1px solid var(--border)}
.footer-brand .brand-logo{margin-bottom:14px}
.footer-col h3{font-size:16px;font-weight:700;color:var(--text-main);margin-bottom:18px}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--text-muted);font-size:15px}
.footer-col ul li a:hover{color:var(--brand-dark)}
.footer-desc{color:var(--text-muted);font-size:15px;line-height:1.8;max-width:320px}
.footer-note{color:var(--text-muted);font-size:14px;line-height:1.8;max-width:300px}
.footer-bottom{border-top:1px solid #D5E4EE;margin-top:48px;padding:22px 0;text-align:center;color:#7B8D9A;font-size:14px}
.footer-link-col{display:flex}
.footer-link-col ul{margin-right:34px}
.footer-contact a{color:var(--brand);font-weight:500}

/* ===== Hero ===== */
.hero{
  background:
    radial-gradient(circle at 88% 22%,rgba(224,110,66,.08),transparent 34%),
    linear-gradient(180deg,#edF4f9 0%,#FFFFFF 100%);
  padding:70px 0 70px;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:54px;align-items:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;padding:7px 16px;border-radius:var(--radius-pill);
  margin-bottom:22px;
}
.kicker i{color:var(--brand)}
.hero h1{font-size:43px;line-height:1.32;letter-spacing:.5px;margin-bottom:26px}
.hero h1 span{color:var(--brand)}
.hero-lead{font-size:17px;color:var(--text-muted);max-width:600px;line-height:1.9;margin-bottom:34px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:42px}
.hero-benefits{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0}
.hero-benefits li{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);
  padding:8px 14px;border-radius:var(--radius-pill);font-size:13px;color:var(--text-main);
  box-shadow:0 4px 12px rgba(23,71,100,.04);
}
.hero-benefits li i{color:var(--accent);font-size:13px}
.hero-visual{
  border-radius:var(--radius-lg);min-height:430px;
  background:linear-gradient(180deg,#cfe1ee 0%,#bcd6e7 100%);
  background-position:center center;background-size:cover;background-repeat:no-repeat;
  box-shadow:0 22px 55px rgba(23,71,100,.17);position:relative;overflow:hidden;
  display:flex;align-items:flex-end;padding:26px;
}
.hero-visual::before{content:"";position:absolute;left:0;right:0;top:0;bottom:0;background:linear-gradient(180deg,rgba(255,255,255,0) 20%,rgba(23,71,100,.55) 100%)}
.hero-float{
  position:absolute;right:22px;top:22px;z-index:3;background:rgba(255,255,255,.94);
  border-radius:14px;box-shadow:0 8px 22px rgba(23,71,100,.25);
  padding:12px 16px;display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--text-main)
}
.hero-float-icon{width:34px;height:34px;flex:none;background:var(--accent);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px}
.hero-visual-caption{position:relative;z-index:2;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-radius:16px;padding:20px 22px;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.hero-visual-caption .caption-title{font-weight:700;font-size:17px;color:var(--text-main);margin-bottom:4px}
.hero-visual-caption .caption-sub{font-size:13px;color:var(--text-muted);line-height:1.6;margin:0}
.hero-blurb{display:block;width:100%;border-radius:12px;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;padding:14px 16px;margin-top:16px}

/* ===== Section base ===== */
.section{padding-top:var(--section-space);padding-bottom:var(--section-space)}
.section-bg{background:var(--bg)}
.section-white{background:#fff}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);border-radius:var(--radius-pill);
  color:var(--brand-dark);font-size:13px;font-weight:700;padding:7px 16px;margin-bottom:14px;letter-spacing:1px;
}
.sec-title{font-size:33px;line-height:1.35;margin-bottom:14px;color:var(--text-main)}
.sec-sub{color:var(--text-muted);font-size:16px;max-width:720px}
.sec-head{margin-bottom:46px}
.sec-head.center{max-width:700px;margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .sec-sub{margin-left:auto;margin-right:auto}

/* ===== Trust bar ===== */
.trust-strip{background:#fff;border-bottom:1px solid var(--border);padding:28px 0;box-shadow:0 6px 16px rgba(23,71,100,.03)}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.trust-item{display:flex;align-items:flex-start;gap:15px;padding:8px 11px}
.trust-item .trust-icon{
  width:48px;height:48px;flex:none;background:var(--brand-soft);border-radius:14px;
  display:flex;align-items:center;justify-content:center;color:var(--brand)
}
.trust-item strong{display:block;font-size:17px;color:var(--text-main);margin-bottom:2px}
.trust-item .trust-desc{font-size:13px;color:var(--text-muted);line-height:1.6;margin:0}
.trust-item .trust-metric{font-size:20px;color:var(--brand-dark);font-weight:800;line-height:1.2}

/* ===== Channel entry cards ===== */
.channel-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.channel-card{
  background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow);
  overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .3s,transform .3s;height:100%;
}
.channel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-6px)}
.channel-card .coverbox{height:230px;position:relative;overflow:hidden;background:#D7E5ED}
.channel-card .coverbox img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.channel-card:hover .coverbox img{transform:scale(1.04)}
.channel-card .channel-icon{
  position:absolute;left:22px;bottom:-20px;width:54px;height:54px;border-radius:16px;
  background:var(--brand);box-shadow:0 10px 18px rgba(40,115,160,.28);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;
}
.channel-card:nth-child(2) .channel-icon{background:var(--accent);box-shadow:0 10px 18px rgba(224,110,66,.28)}
.channel-card .channel-body{padding:38px 26px 28px;flex:1;display:flex;flex-direction:column}
.channel-card h3{font-size:22px;margin-bottom:12px}
.channel-card p{color:var(--text-muted);font-size:15px;flex:1}
.channel-more{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:8px;font-size:15px}
.channel-more:hover{color:var(--brand-dark);gap:12px}
.channel-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;margin-bottom:4px}
.tag{
  background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:600;
  border-radius:var(--radius-pill);padding:4px 10px;
}
.tag-accent{background:#fdeDu6;color:var(--accent-dark)}

/* ===== Guide steps ===== */
.guide-box{position:relative}
.steps-content{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:28px;position:relative}
.step-item{position:relative;padding:24px 18px 18px}
.step-num{
  font-size:50px;font-weight:800;line-height:1;color:var(--brand-soft);
  display:block;margin-bottom:14px;font-style:normal;
}
.step-item:hover .step-num{color:var(--brand)}
.step-icon{
  width:49px;height:49px;border-radius:15px;background:var(--surface);
  box-shadow:0 8px 22px rgba(23,71,100,.11);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:20px;margin:6px 0 18px;
}
.step-item h3{font-size:19px;margin-bottom:8px}
.step-item p{color:var(--text-muted);font-size:14px;line-height:1.7;margin:0}
.step-arrow{
  position:absolute;top:78px;right:-23px;z-index:2;color:#C7D9E6;font-size:19px;
  display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:#fff;
  box-shadow:0 5px 14px rgba(23,71,100,.08);
}
.anchor-point{position:relative;display:flex;flex-direction:column}
.anchor-card{
  background:var(--surface);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow);
  display:flex;gap:18px;align-items:flex-start;transition:box-shadow .3s,transform .3s;height:100%;
}
.anchor-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.anchor-num{
  font-size:16px;font-weight:800;color:var(--accent);background:#fff0eb;border-radius:10px;
  min-width:42px;height:36px;display:flex;align-items:center;justify-content:center;flex:none;
}

/* ===== Scene / proof ===== */
.scene-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:stretch}
.scene-visual{
  border-radius:var(--radius-lg);overflow:hidden;min-height:360px;position:relative;
  background:#B8D7E9;box-shadow:var(--shadow);
}
.scene-visual .scene-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.scene-visual-caption{
  position:absolute;left:22px;right:22px;bottom:22px;background:rgba(255,255,255,.95);
  border-radius:16px;padding:20px 22px;backdrop-filter:blur(8px);
}
.scene-visual-caption strong{display:block;font-size:18px;color:var(--text-main);margin-bottom:6px}
.scene-visual-caption p{font-size:14px;color:var(--text-muted);margin:0;line-height:1.7}
.scene-list{display:flex;flex-direction:column;gap:20px}
.scene-card{
  background:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow);
  padding:26px;transition:box-shadow .3s,transform .3s;flex:1;
}
.scene-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.scene-card .scene-kicker{font-size:12px;letter-spacing:1px;color:var(--brand);font-weight:700;text-transform:uppercase;margin-bottom:7px}
.scene-card h3{font-size:18px;margin-bottom:10px;line-height:1.5}
.scene-card p{color:var(--text-muted);font-size:14px;margin-bottom:16px}
.scene-link{font-size:14px;font-weight:600;color:var(--brand)}
.scene-link i{margin-left:6px;transition:.3s}
.scene-link:hover{color:var(--accent)}
.scene-link:hover i{margin-left:10px;color:var(--accent)}

/* ===== Latest content / CMS ===== */
.latest-panel{background:var(--bg);border-radius:28px;padding:28px;}
.latest-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.main-feature{
  background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--border);transition:box-shadow .3s,transform .3s;
}
.main-feature:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.feature-cover{height:240px;background:#D7E5ED;background-image:url('/assets/images/coverpic/cover-6.webp');background-size:cover;background-position:center}
.feature-content{padding:24px}
.feature-content .date-badge{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:13px;margin-bottom:10px}
.feature-content .date-badge i{color:var(--accent)}
.feature-content h3{font-size:21px;line-height:1.5;margin:12px 0 10px}
.feature-content h3 a:hover{color:var(--brand-dark)}
.feature-content .post-summary{color:var(--text-muted);font-size:15px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.small-post-list{display:flex;flex-direction:column;gap:14px}
.small-post-card{
  background:var(--surface);border-radius:var(--radius-md);padding:18px 20px;display:flex;justify-content:space-between;
  gap:16px;align-items:center;box-shadow:var(--shadow);transition:box-shadow .3s,transform .3s;
}
.small-post-card:hover{box-shadow:var(--shadow-hover);transform:translateX(3px)}
.small-post-card .sp-copy{min-width:0}
.small-post-card .sp-tag{font-size:11px;font-weight:700;color:var(--brand);letter-spacing:.4px;text-transform:uppercase}
.small-post-card h4{font-size:17px;font-weight:600;line-height:1.55;margin:6px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.small-post-card .sp-meta{color:var(--text-muted);font-size:13px;display:flex;align-items:center;gap:6px}
.post-more-link{color:var(--brand);font-weight:600;font-size:13px;white-space:nowrap;flex-shrink:0}
.post-more-link i{margin-left:4px}
.post-more-link:hover{color:var(--accent)}
.empty-state{
  border-radius:var(--radius-lg);background:#fff;border:1px dashed var(--border);
  padding:42px 24px;text-align:center;color:var(--text-muted);box-shadow:inset 0 2px 8px rgba(23,71,100,.03);
}
.empty-state .empty-icon{width:64px;height:64px;border-radius:20px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:26px}
.empty-state p{margin-bottom:6px;font-size:15px}
.empty-state .empty-sub{font-size:13px;opacity:.75}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .accordion-item{
  border:0;border-radius:var(--radius-md) !important;overflow:hidden;margin-bottom:16px;
  background:var(--surface);box-shadow:var(--shadow);
}
.faq-wrap .accordion-button{
  background:var(--surface);color:var(--text-main);font-weight:600;font-size:17px;
  box-shadow:none;padding:22px 26px 22px 24px;border-radius:var(--radius-md) !important;
}
.faq-wrap .accordion-button::after{
  background:none;width:auto;height:auto;margin-left:18px;flex-shrink:0;
  content:"\2B";font-weight:300;font-size:26px;color:var(--brand);transition:transform .3s ease;
}
.faq-wrap .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-wrap .accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-dark)}
.faq-wrap .accordion-button:hover{background:#f1f7fb}
.faq-wrap .accordion-body{padding:8px 26px 24px 24px;color:var(--text-muted);font-size:15px;line-height:1.8;background:#fff}
.faq-wrap .accordion-body .inner{max-width:760px}
.faq-note{margin-top:6px;color:var(--text-muted);font-size:11px;text-align:center}

/* ===== Summary section after cms */ 
.newsletter-card{
  background:var(--brand-soft);border-radius:var(--radius-lg);padding:26px 30px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.newsletter-card p{margin:0;color:var(--brand-dark)}

/* ===== CTA ===== */
.cta-section{background:#fff;padding:38px 0 74px}
.cta-banner{
  background:var(--brand-soft);
  border-radius:28px;padding:54px 52px;display:grid;grid-template-columns:1fr auto;
  align-items:center;gap:28px;position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;opacity:.16;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;mix-blend-mode:multiply;
}
.cta-banner .cta-copy{position:relative;z-index:2}
.cta-banner .kicker-light{display:inline-block;background:rgba(255,255,255,.9);color:var(--brand-dark);border-radius:var(--radius-pill);font-size:13px;padding:5px 13px;font-weight:700;margin-bottom:14px}
.cta-banner h2{font-size:28px;margin:0 0 10px;position:relative;z-index:2}
.cta-banner p{color:#33566c;max-width:600px;margin:0;position:relative;z-index:2}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.cta-actions .btn{margin-left:0}

/* ===== Custom responsive ===== */
@media (max-width:1199px){
  .hero h1 {font-size:36px}
  .sec-title{font-size:29px}
}
@media (max-width:991px){
  :root{--section-space:64px}
  .menu-toggle{display:flex}
  .main-nav{
    position:absolute;top:100%;left:0;width:100%;
    background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
    box-shadow:0 16px 28px rgba(23,71,100,.08);padding:18px;flex-direction:column;align-items:stretch;gap:12px;
  }
  .main-nav:not(.show){display:none}
  .nav-links{flex-direction:column;align-items:stretch;gap:6px}
  .nav-links li a{display:flex;padding:12px 18px;border-radius:11px;font-size:17px}
  .nav-links li.active a{background:var(--brand-soft)}
  .header-cta{display:none}
  .hero{padding-top:54px;padding-bottom:46px}
  .hero-grid{grid-template-columns:1fr;gap:39px}
  .hero h1{font-size:34px}
  .channel-grid,.scene-grid{grid-template-columns:1fr}
  .latest-wrap{grid-template-columns:1fr}
  .steps-content{grid-template-columns:1fr;gap:14px;max-width:470px}
  .step-arrow{transform:rotate(90deg);right:auto;left:50%;margin-left:-20px;top:auto;bottom:-3px}
  .anchor-point .step-arrow{margin-left:0}
  .trust-item{flex-direction:column;align-items:flex-start;padding:10px 4px}
  .cta-banner{grid-template-columns:1fr;padding:36px 28px}
  .cta-banner p,.cta-actions{justify-content:flex-start}
  .hero-visual{min-height:350px}
  .footer-hero{grid-template-columns:1fr}
}
@media (max-width:767px){
  .topic-card-grid{grid-template-columns:1fr}
  .brand-text{font-size:18px}
  .sec-title{font-size:26px}
  .hero h1{font-size:29px}
  .trust-grid{grid-template-columns:1fr;gap:18px}
  .trust-item{flex-direction:row}
  .latest-panel{padding:14px}
  .main-feature .feature-cover{height:194px}
  .small-post-card{align-items:flex-start}
  .small-post-card .sp-meta-wrap{display:none}
  .footer-grid{grid-template-columns:1fr}
  .steps-content{max-width:100%}
  .cta-banner h2{font-size:24px}
  .scene-visual{min-height:265px}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .hero-lead{font-size:15px}
  .hero-visual{min-height:310px}
  .hero-btns .btn{width:100%}
  .hero-btns .btn-ghost{margin-top:2px}
  .channel-card .coverbox{height:185px}
  .sec-head{margin-bottom:34px}
  .feature-content h3{font-size:18px}
  .footer-bottom{font-size:13px}
  .btn{padding:11px 18px;font-size:15px}
}
@media (max-width:400px){
  .brand-mark{width:38px;height:38px}
  .brand-text{font-size:16px}
  .site-header .container{height:68px}
  .hero h1{font-size:23px}
}

/* roulang page: article */
:root {
  --brand: #2873A0;
  --brand-dark: #195E88;
  --brand-soft: #E7F1F8;
  --accent: #E06E42;
  --accent-dark: #cc5b34;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text-main: #1E2A38;
  --text-muted: #5F7487;
  --border: #DEE7EF;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 8px 24px rgba(23, 71, 100, 0.06);
  --shadow-hover: 0 14px 34px rgba(23, 71, 100, 0.12);
  --font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

img {
  max-width: 100%;
  vertical-align: middle;
}

.container {
  max-width: 1200px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1080;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.navbar-site {
  padding: 10px 0;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: opacity .2s ease;
}

.brand-logo:hover {
  opacity: .86;
  color: inherit;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(145deg, #2873A0 0%, #195E88 100%);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 8px 18px rgba(40, 115, 160, 0.25);
  flex: 0 0 auto;
}

.brand-text {
  display: block;
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: .02em;
}

.brand-text small {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: .08em;
}

.main-nav {
  gap: 8px;
}

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

.nav-links li a {
  display: block;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-main);
  text-decoration: none;
  transition: all .2s ease;
}

.nav-links li a:hover {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.nav-links li.active a {
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 600;
}

.header-cta {
  margin-left: 12px;
  padding: 10px 22px;
  font-size: 14px;
  border-radius: 999px;
}

.navbar-toggler {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 10px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(40, 115, 160, 0.18);
  border-color: var(--brand);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23195E88' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 1.3em;
  height: 1.3em;
}

.btn {
  border-radius: 14px;
  padding: 12px 26px;
  font-weight: 600;
  font-family: var(--font-family);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .25s ease;
}

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

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: none;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 8px 20px rgba(224, 110, 66, 0.22);
}

.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(224, 110, 66, 0.3);
}

.btn-outline-brand {
  background: var(--surface);
  border: 1px solid #C4DAE8;
  color: var(--brand-dark);
}

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

.article-hero {
  position: relative;
  padding: 68px 0 96px;
  background: linear-gradient(180deg, #F0F7FC 0%, #fafdff 60%, #F5F8FB 100%);
  overflow: hidden;
}

.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  background-position: right center;
  opacity: .16;
  pointer-events: none;
}

.article-hero .container {
  position: relative;
  z-index: 2;
}

.crumb-nav {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  row-gap: 6px;
  margin-bottom: 26px;
}

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

.crumb-nav a:hover {
  color: var(--brand);
}

.crumb-nav .crumb-sep {
  margin: 0 12px;
  font-style: normal;
  color: #ACC4D6;
}

.crumb-nav .bc-current {
  color: var(--text-main);
  font-weight: 500;
  max-width: 340px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero-inner {
  max-width: 920px;
}

.article-title {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 22px;
  letter-spacing: -.01em;
}

.article-lead {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 820px;
  margin: 0 0 24px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  color: var(--text-muted);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item i {
  color: var(--brand);
  font-size: 14px;
}

.meta-divider {
  color: #B9CDDE;
}

.article-main {
  position: relative;
  z-index: 5;
  margin-top: -58px;
  padding-bottom: 20px;
}

.article-card {
  background: var(--surface);
  border: 1px solid rgba(222, 231, 239, .8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 50px 58px;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.article-content {
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.9;
}

.article-content > * + * {
  margin-top: 0;
}

.article-content p {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.9;
  color: #273544;
}

.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.4;
  margin: 40px 0 16px;
}

.article-content h2 {
  font-size: 24px;
  border-left: 4px solid var(--accent);
  padding-left: 18px;
}

.article-content h3 {
  font-size: 20px;
  padding-top: 8px;
}

.article-content h4 {
  font-size: 17px;
  color: var(--brand-dark);
}

.article-content a {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-color: rgba(40, 115, 160, .35);
  text-underline-offset: 4px;
}

.article-content a:hover {
  color: var(--brand-dark);
  text-decoration-color: currentColor;
}

.article-content ul,
.article-content ol {
  margin: 0 0 26px;
  padding-left: 26px;
}

.article-content li {
  margin-bottom: 9px;
  line-height: 1.85;
}

.article-content blockquote {
  margin: 28px 0;
  padding: 22px 26px;
  background: var(--brand-soft);
  border-left: 4px solid var(--brand);
  border-radius: 0 14px 14px 0;
  color: var(--text-main);
  font-size: 16px;
}

.article-content img {
  border-radius: var(--radius);
  margin: 18px 0;
  height: auto;
  box-shadow: var(--shadow-sm);
  background: var(--brand-soft);
}

.article-content table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  font-size: 14.5px;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
}

.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 11px 14px;
}

.article-content th {
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 600;
}

.article-content iframe {
  max-width: 100%;
  border-radius: 14px;
  border: 0;
  aspect-ratio: 16 / 9;
}

.article-content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 38px 0;
}

.article-card-bottom {
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.article-card-bottom .bottom-label {
  font-size: 14px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-empty-card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-lg);
  padding: 80px 40px;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.article-empty-card h1 {
  font-size: 32px;
  color: var(--text-main);
  margin: 18px 0 12px;
  font-weight: 700;
}

.article-empty-card p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 440px;
  margin: 0 auto 26px;
}

.empty-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 22px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 24px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--brand-dark);
  background: var(--brand-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.related-section {
  padding: 96px 0 24px;
}

.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.related-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.related-head .btn {
  flex: 0 0 auto;
}

.related-main-card {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  background: var(--surface);
  border: 1px solid rgba(222, 231, 239, .9);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  height: 100%;
  min-height: 100%;
}

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

.related-main-cover {
  overflow: hidden;
  background: var(--brand-soft);
  min-height: 190px;
}

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

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

.related-main-content {
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tag {
  display: inline-flex;
  align-items: center;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 4px 12px;
  width: fit-content;
  margin-bottom: 14px;
}

.related-main-content h3 {
  font-size: 19px;
  line-height: 1.5;
  font-weight: 650;
  color: var(--text-main);
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-main-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-more {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.link-more i {
  transition: transform .2s ease;
}

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

.related-mini-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface);
  border: 1px solid rgba(222, 231, 239, .9);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
  flex: 1 1 0;
}

.related-mini-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.mini-card-text {
  flex: 1;
  min-width: 0;
}

.mini-card-text h3 {
  font-size: 15.5px;
  font-weight: 650;
  line-height: 1.5;
  margin: 8px 0 6px;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mini-card-text p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-mini-card .mini-thumb {
  width: 96px;
  height: 78px;
  object-fit: cover;
  border-radius: 12px;
  background: var(--brand-soft);
  flex: 0 0 auto;
}

.cta-section {
  padding: 90px 0 100px;
}

.cta-box {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--brand-soft);
  overflow: hidden;
  padding: 56px 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.png");
  background-size: cover;
  background-position: center;
  opacity: .16;
  pointer-events: none;
}

.cta-copy {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.cta-copy h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin: 0 0 14px;
  letter-spacing: -.01em;
}

.cta-copy p {
  font-size: 15px;
  color: var(--text-muted);
  margin: 0 0 26px;
  max-width: 620px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer {
  background: #1B2E3F;
  color: #C1D3E1;
  padding-top: 20px;
}

.footer-hero {
  padding: 48px 0 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .brand-logo {
  color: #fff;
}

.footer-brand .brand-mark {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  box-shadow: none;
}

.footer-brand .brand-text {
  color: #fff;
  font-size: 20px;
}

.footer-brand .brand-text small {
  color: #A3C1D8;
  font-size: 12px;
}

.footer-desc {
  font-size: 14px;
  color: #9FB7C9;
  margin-top: 18px;
  line-height: 1.85;
  max-width: 400px;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-col ul a {
  color: #AEC7DA;
  font-size: 14px;
  text-decoration: none;
  display: inline-block;
  transition: all .2s ease;
}

.footer-col ul a:hover {
  color: #fff;
  transform: translateX(4px);
}

.footer-note {
  color: #8FA9BD;
  font-size: 13.5px;
  line-height: 1.8;
  margin: 0;
}

.footer-bottom {
  padding: 24px 0 30px;
  text-align: center;
  font-size: 13px;
  color: #7895AA;
}

@media (max-width: 991.98px) {
  :root {
    --section-space: 60px;
  }

  .navbar-collapse.main-nav {
    margin-top: 12px;
    padding: 18px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin-bottom: 16px;
  }

  .nav-links li a {
    padding: 14px 18px;
    font-size: 16px;
  }

  .header-cta {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }

  .article-card {
    padding: 44px 32px;
  }

  .related-main-card {
    grid-template-columns: 1fr;
  }

  .related-main-cover img {
    min-height: 210px;
  }

  .cta-box {
    padding: 46px 32px;
  }

  .cta-box::before {
    opacity: .1;
  }
}

@media (max-width: 767.98px) {
  .article-hero {
    padding: 48px 0 76px;
  }

  .article-title {
    font-size: 30px;
  }

  .crumb-nav .bc-current {
    max-width: 100%;
    white-space: normal;
  }

  .article-card {
    padding: 30px 24px;
    margin: 0 12px;
  }

  .article-main {
    margin-top: -36px;
  }

  .related-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-section {
    padding: 70px 0 76px;
  }

  .cta-box {
    padding: 40px 24px;
    flex-direction: column;
    align-items: flex-start;
  }

  .related-section {
    padding-top: 72px;
  }
}

@media (max-width: 520px) {
  .article-meta {
    gap: 10px;
  }

  .article-meta .meta-divider {
    display: none;
  }

  .article-card {
    padding: 26px 18px;
    border-radius: 18px;
  }

  .article-content {
    font-size: 15.5px;
  }

  .article-content h2 {
    font-size: 20px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .related-main-content {
    padding: 22px 20px;
  }

  .related-mini-card {
    align-items: flex-start;
    flex-direction: column;
    width: 100%;
  }

  .related-mini-card .mini-thumb {
    width: 100%;
    height: 130px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn-outline-brand + .btn {
    margin-left: 0 !important;
  }
}

/* roulang page: category1 */
:root {
      --brand: #2873A0;
      --brand-dark: #195E88;
      --brand-soft: #E7F1F8;
      --accent: #E06E42;
      --bg: #F5F8FB;
      --surface: #FFFFFF;
      --text-main: #1E2A38;
      --text-muted: #5F7487;
      --border: #DEE7EF;
      --radius-sm: 8px;
      --radius-card: 16px;
      --radius-card-lg: 24px;
      --shadow-sm: 0 8px 24px rgba(23, 71, 100, 0.06);
      --shadow-hover: 0 14px 34px rgba(23, 71, 100, 0.12);
      --transition: all .25s ease;
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Inter, system-ui, -apple-system, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text-main);
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.3;
      margin: 0;
    }

    p {
      margin: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    a:hover {
      color: inherit;
      text-decoration: none;
    }

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

    button, input, select, textarea {
      font-family: inherit;
    }

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

    .container {
      max-width: 1200px;
      padding-left: 24px;
      padding-right: 24px;
    }

    section {
      overflow: hidden;
    }

    .section-space {
      padding: 96px 0;
    }

    @media (max-width: 991.98px) {
      .section-space {
        padding: 72px 0;
      }
    }

    @media (max-width: 575.98px) {
      .section-space {
        padding: 56px 0;
      }
    }

    /* ===== header / nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.97);
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(8px);
    }

    .header-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      min-height: 76px;
      gap: 12px;
      padding: 12px 0;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: var(--text-main);
      transition: var(--transition);
    }

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

    .brand-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-size: 18px;
      flex: 0 0 42px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      font-size: 21px;
      font-weight: 700;
      letter-spacing: .2px;
      line-height: 1.2;
    }

    .brand-text small {
      font-size: 11px;
      color: var(--text-muted);
      font-weight: 500;
      letter-spacing: .4px;
      line-height: 1.4;
      margin-top: 3px;
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      column-gap: 8px;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 9px 17px;
      border-radius: 999px;
      color: var(--text-main);
      font-size: 15px;
      font-weight: 500;
      transition: var(--transition);
      white-space: nowrap;
    }

    .nav-links li a:hover,
    .nav-links li a:focus {
      background: var(--brand-soft);
      color: var(--brand-dark);
      outline: none;
    }

    .nav-links li.active a {
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-weight: 600;
    }

    .toggler-custom {
      display: none;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: #fff;
      color: var(--brand-dark);
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
      padding: 0;
    }

    .toggler-custom:hover {
      border-color: var(--brand);
      color: var(--brand);
      background: var(--brand-soft);
    }

    @media (max-width: 991.98px) {
      .toggler-custom {
        display: inline-flex;
      }

      .main-nav {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        background: #fff;
        border-radius: 18px;
        padding: 14px;
        gap: 8px;
        box-shadow: var(--shadow-hover);
        border: 1px solid var(--border);
      }

      .main-nav.collapse:not(.show) {
        display: none;
      }

      .nav-links {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 2px;
      }

      .nav-links li a {
        display: block;
        padding: 13px 18px;
        border-radius: 12px;
        font-size: 16px;
      }

      .header-cta {
        width: 100%;
        margin-top: 8px;
      }
    }

    @media (min-width: 992px) {
      .main-nav.collapse:not(.show) {
        display: flex;
      }
    }

    /* ===== buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      padding: 12px 24px;
      border: 1px solid transparent;
      font-size: 16px;
      font-weight: 600;
      line-height: 1.5;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

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

    .btn-accent {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
      box-shadow: 0 8px 18px rgba(224, 110, 66, 0.18);
    }

    .btn-accent:hover,
    .btn-accent:focus {
      background: #d45a32;
      color: #fff;
      border-color: #d45a32;
      box-shadow: 0 12px 24px rgba(224, 110, 66, 0.28);
      outline: none;
    }

    .btn-outline-brand {
      background: #fff;
      color: var(--brand);
      border-color: #b9cddd;
    }

    .btn-outline-brand:hover,
    .btn-outline-brand:focus {
      background: var(--brand-soft);
      color: var(--brand-dark);
      border-color: var(--brand);
      outline: none;
    }

    .btn:focus-visible,
    .nav-links li a:focus-visible,
    .brand-logo:focus-visible {
      outline: 3px solid rgba(224, 110, 66, 0.5);
      outline-offset: 2px;
    }

    .header-cta {
      padding: 10px 22px;
      font-size: 15px;
      margin-left: 8px;
    }

    @media (max-width: 575.98px) {
      .btn {
        padding: 12px 20px;
      }

      .header-cta {
        margin-left: 0;
      }
    }

    /* ===== page hero ===== */
    .page-hero {
      position: relative;
      padding: 76px 0 58px;
      background:
        linear-gradient(180deg, rgba(231, 241, 248, 0.82) 0%, rgba(245, 248, 251, 0.92) 100%),
        url("/assets/images/backpic/back-1.png") center / cover no-repeat;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, transparent 60%, rgba(255, 255, 255, 0.5) 100%);
      pointer-events: none;
    }

    .page-hero .container {
      position: relative;
      z-index: 2;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      background: var(--surface);
      border: 1px solid #d7e7f1;
      color: var(--brand-dark);
      padding: 6px 15px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .4px;
    }

    .hero-kicker i {
      color: var(--accent);
    }

    .hero-title {
      margin: 18px 0 16px;
      font-size: 48px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }

    .hero-title span {
      color: var(--brand-dark);
    }

    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 620px;
      line-height: 1.9;
    }

    .hero-actions {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .hero-note {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-top: 24px;
      color: var(--brand-dark);
      font-size: 14px;
      background: rgba(255, 255, 255, 0.72);
      border-radius: 999px;
      padding: 7px 16px;
      width: max-content;
    }

    .hero-note i {
      color: var(--brand);
    }

    .hero-media {
      position: relative;
      margin-left: 24px;
    }

    .hero-media-card {
      background: #fff;
      border-radius: var(--radius-card-lg);
      padding: 10px;
      box-shadow: var(--shadow-hover);
      border: 1px solid #e8eef3;
    }

    .hero-media-card img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      border-radius: 18px;
      background: var(--brand-soft);
    }

    .hero-float {
      margin-top: 12px;
      padding: 14px 16px;
      background: var(--brand-soft);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    .hero-float strong {
      color: var(--brand-dark);
      font-size: 14px;
    }

    .hero-float span {
      font-size: 12px;
      color: var(--text-muted);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      background: var(--accent);
      color: #fff;
      border-radius: 999px;
      padding: 6px 13px;
      font-size: 13px;
      font-weight: 600;
      flex: 0 0 auto;
    }

    @media (max-width: 991.98px) {
      .page-hero {
        padding: 56px 0 48px;
      }

      .hero-title {
        font-size: 38px;
      }

      .hero-media {
        margin-left: 0;
        margin-top: 20px;
      }
    }

    @media (max-width: 575.98px) {
      .hero-title {
        font-size: 32px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-note {
        width: 100%;
        border-radius: 12px;
        padding: 8px 14px;
      }

      .hero-media-card img {
        height: 210px;
      }

      .hero-float {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    /* ===== value strip ===== */
    .value-strip {
      padding: 0;
      background: #fff;
      border-bottom: 1px solid var(--border);
    }

    .strip-inner {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
    }

    .strip-item {
      display: flex;
      gap: 16px;
      align-items: center;
      padding: 26px 28px;
      border-left: 1px solid #edf2f6;
    }

    .strip-item:first-child {
      padding-left: 0;
      border-left: 0;
    }

    .strip-item .strip-ico {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex: 0 0 48px;
    }

    .strip-item strong {
      display: block;
      color: var(--text-main);
      font-size: 16px;
      line-height: 1.4;
    }

    .strip-item span {
      display: block;
      color: var(--text-muted);
      font-size: 13px;
      margin-top: 4px;
      line-height: 1.6;
    }

    @media (max-width: 991.98px) {
      .strip-inner {
        grid-template-columns: 1fr;
      }

      .strip-item,
      .strip-item:first-child {
        padding: 18px 8px;
        border-left: 0;
        border-bottom: 1px solid #edf2f6;
      }

      .strip-item:last-child {
        border-bottom: 0;
      }
    }

    /* ===== section heading ===== */
    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--brand-dark);
      background: var(--brand-soft);
      padding: 4px 14px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .4px;
    }

    .section-kicker i {
      color: var(--accent);
      font-size: 12px;
    }

    .section-title {
      font-size: 34px;
      margin: 14px 0 14px;
      line-height: 1.35;
      letter-spacing: -0.3px;
    }

    .section-text {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.9;
    }

    @media (max-width: 575.98px) {
      .section-title {
        font-size: 27px;
      }
    }

    /* ===== editorial block ===== */
    .editorial-block {
      background: #fff;
    }

    .editorial-soft {
      background: var(--bg);
    }

    .feature-list {
      list-style: none;
      margin-top: 22px;
      display: grid;
      gap: 13px;
    }

    .feature-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: var(--text-main);
      font-size: 15px;
      line-height: 1.7;
    }

    .feature-list li i {
      color: var(--brand);
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--brand-soft);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      margin-top: 5px;
      flex: 0 0 20px;
    }

    .media-frame {
      border-radius: var(--radius-card-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      background: var(--brand-soft);
      border: 1px solid #e5edf3;
      transition: var(--transition);
      position: relative;
    }

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

    .media-frame img {
      width: 100%;
      height: 360px;
      object-fit: cover;
    }

    .media-caption {
      padding: 14px 18px;
      font-size: 13px;
      color: var(--text-muted);
      background: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .media-caption i {
      color: var(--accent);
    }

    @media (max-width: 767.98px) {
      .media-frame img {
        height: 250px;
      }
    }

    /* ===== flow steps ===== */
    .flow-section {
      background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
    }

    .flow-steps {
      display: flex;
      align-items: stretch;
      justify-content: center;
      gap: 0;
      margin-top: 50px;
    }

    .flow-item {
      flex: 1 1 0;
      background: var(--surface);
      border: 1px solid #e9f0f5;
      border-radius: 18px;
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

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

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--accent);
      color: #fff;
      font-weight: 700;
      font-size: 15px;
      margin-bottom: 18px;
    }

    .flow-item h3 {
      font-size: 19px;
      margin-bottom: 8px;
    }

    .flow-item p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .flow-connector {
      flex: 0 0 86px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand);
      position: relative;
    }

    .flow-connector::before {
      content: "";
      position: absolute;
      top: 50%;
      left: 30px;
      right: 30px;
      border-top: 2px dashed #b7d4e5;
    }

    .flow-connector span {
      position: relative;
      z-index: 2;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: #fff;
      border: 1px solid #d5e4ed;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
    }

    @media (max-width: 991.98px) {
      .flow-steps {
        flex-direction: column;
        gap: 0;
      }

      .flow-item {
        width: 100%;
      }

      .flow-connector {
        height: 56px;
        flex: 0 0 56px;
        width: 100%;
      }

      .flow-connector::before {
        left: 50%;
        right: auto;
        top: 4px;
        bottom: 4px;
        border-top: 0;
        border-left: 2px dashed #b7d4e5;
        width: 0;
      }

      .flow-connector span {
        transform: rotate(90deg);
      }
    }

    /* ===== topic guide ===== */
    .topic-guide-section {
      padding: 96px 0;
      background: var(--bg);
    }

    @media (max-width: 575.98px) {
      .topic-guide-section {
        padding: 56px 0;
      }
    }

    .topic-card {
      background: #fff;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid #eaf0f4;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }

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

    .topic-media {
      overflow: hidden;
      background: var(--brand-soft);
      position: relative;
    }

    .topic-media img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform .5s ease;
    }

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

    .topic-card-lg .topic-media img {
      height: 310px;
    }

    .topic-card-sm .topic-media img {
      height: 150px;
    }

    .topic-body {
      padding: 24px 24px 26px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .topic-tag {
      align-self: flex-start;
      background: var(--brand-soft);
      color: var(--brand-dark);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      padding: 5px 12px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 13px;
    }

    .topic-tag i {
      color: var(--accent);
    }

    .topic-body h3 {
      font-size: 20px;
      margin-bottom: 10px;
      color: var(--text-main);
      transition: var(--transition);
    }

    .topic-card:hover h3 {
      color: var(--brand-dark);
    }

    .topic-body p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .card-link {
      margin-top: auto;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--brand);
      font-size: 14px;
      font-weight: 600;
      transition: var(--transition);
    }

    .topic-card:hover .card-link {
      color: var(--accent);
      gap: 11px;
    }

    /* horizontal wide card */
    .topic-wide-card {
      display: flex;
      align-items: center;
      background: #fff;
      border-radius: 18px;
      padding: 16px;
      gap: 20px;
      border: 1px solid #eaf0f4;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      min-height: 118px;
    }

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

    .wide-card-icon {
      width: 54px;
      height: 54px;
      border-radius: 14px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 21px;
      flex: 0 0 54px;
    }

    .topic-wide-card h3 {
      font-size: 17px;
      margin: 2px 0 4px;
      transition: var(--transition);
    }

    .topic-wide-card:hover h3 {
      color: var(--brand-dark);
    }

    .topic-wide-card p {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .wide-card-arrow {
      margin-left: auto;
      font-size: 18px;
      color: var(--brand);
      transition: var(--transition);
    }

    .topic-wide-card:hover .wide-card-arrow {
      color: var(--accent);
      transform: translateX(4px);
    }

    @media (max-width: 767.98px) {
      .topic-card-lg .topic-media img {
        height: 230px;
      }

      .topic-media img {
        height: 190px;
      }
    }

    @media (max-width: 575.98px) {
      .topic-wide-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
      }

      .wide-card-arrow {
        margin-left: 0;
      }
    }

    /* ===== FAQ ===== */
    .faq-block {
      background: #fff;
    }

    .faq-block .section-title {
      text-align: center;
    }

    .faq-sub {
      text-align: center;
      color: var(--text-muted);
      margin: 0 auto 48px;
      max-width: 680px;
      font-size: 16px;
    }

    .accordion-custom {
      max-width: 860px;
      margin: 0 auto;
    }

    .accordion-custom .accordion-item {
      background: var(--surface);
      border: 1px solid #e8eef3;
      border-radius: 18px;
      overflow: hidden;
      margin-bottom: 14px;
      box-shadow: var(--shadow-sm);
    }

    .accordion-custom .accordion-item:hover {
      box-shadow: var(--shadow-hover);
    }

    .accordion-custom .accordion-header {
      margin: 0;
    }

    .accordion-custom .accordion-button {
      background: #fff;
      color: var(--text-main);
      font-weight: 600;
      font-size: 16px;
      padding: 20px 24px;
      border: 0;
      box-shadow: none;
    }

    .accordion-custom .accordion-button.collapsed,
    .accordion-custom .accordion-button:not(.collapsed) {
      background: #fff;
      color: var(--text-main);
    }

    .accordion-custom .accordion-button:not(.collapsed) {
      color: var(--brand-dark);
      background: var(--brand-soft);
    }

    .accordion-custom .accordion-button:hover {
      color: var(--brand-dark);
      background: #f0f7fb;
    }

    .accordion-custom .accordion-button::after {
      width: 22px;
      height: 22px;
      background-size: contain;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235F7487' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
      transition: transform .3s ease;
      opacity: .8;
    }

    .accordion-custom .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
      filter: invert(30%) sepia(28%) saturate(600%) hue-rotate(170deg);
    }

    .accordion-custom .accordion-button:focus-visible {
      box-shadow: 0 0 0 3px rgba(40, 115, 160, 0.2);
    }

    .accordion-custom .accordion-body {
      padding: 0 24px 22px;
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.9;
      background: var(--brand-soft);
      border-radius: 0 0 18px 18px;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 80px 0;
      background: var(--bg);
    }

    .cta-inner {
      position: relative;
      border-radius: 28px;
      overflow: hidden;
      background:
        linear-gradient(100deg, rgba(255, 255, 255, 0.98) 12%, rgba(255, 255, 255, 0.78) 100%),
        url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
      border: 1px solid #e7eef4;
      box-shadow: var(--shadow-sm);
      padding: 64px 56px;
    }

    .cta-inner h2 {
      font-size: 32px;
      color: var(--text-main);
      letter-spacing: -0.2px;
      max-width: 700px;
      margin-bottom: 16px;
    }

    .cta-inner p {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.8;
      max-width: 700px;
    }

    .cta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 22px 0 30px;
    }

    .cta-tag {
      background: rgba(231, 241, 248, 0.9);
      border-radius: 999px;
      padding: 7px 15px;
      color: var(--brand-dark);
      font-size: 13px;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

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

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

    @media (max-width: 767.98px) {
      .cta-inner {
        padding: 38px 24px;
      }

      .cta-inner h2 {
        font-size: 27px;
      }
    }

    /* ===== footer ===== */
    .site-footer {
      background: var(--brand-soft);
      border-top: 1px solid #d8e6ef;
      padding-top: 64px;
    }

    .footer-brand {
      padding-right: 20px;
    }

    .footer-brand .brand-logo {
      margin-bottom: 16px;
    }

    .footer-brand .brand-text {
      font-size: 20px;
    }

    .footer-brand .brand-text small {
      color: #6c8394;
    }

    .footer-desc {
      color: #5a7182;
      font-size: 14px;
      line-height: 1.85;
      margin-top: 10px;
      max-width: 360px;
    }

    .footer-col h3 {
      color: #29445a;
      font-size: 16px;
      font-weight: 600;
      margin: 4px 0 18px;
    }

    .footer-col ul {
      list-style: none;
    }

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

    .footer-col ul li a {
      color: #5a7182;
      font-size: 14px;
      position: relative;
      transition: var(--transition);
    }

    .footer-col ul li a:hover {
      color: var(--brand-dark);
      padding-left: 5px;
    }

    .footer-note {
      color: #5a7182;
      font-size: 14px;
      line-height: 1.85;
      margin-bottom: 4px;
    }

    .footer-bottom {
      background: rgba(255, 255, 255, 0.78);
      padding: 20px 0;
      margin-top: 48px;
      color: #698092;
      font-size: 13px;
      text-align: center;
      border-top: 1px solid #d7e5ed;
    }

    @media (max-width: 767.98px) {
      .site-footer {
        padding-top: 46px;
      }

      .footer-bottom {
        margin-top: 32px;
      }
    }

/* roulang page: category2 */
:root {
  --brand: #2873A0;
  --brand-dark: #195E88;
  --brand-soft: #E7F1F8;
  --accent: #E06E42;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text-main: #1E2A38;
  --text-muted: #5F7487;
  --border: #DEE7EF;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 8px 24px rgba(23, 71, 100, 0.06);
  --shadow-hover: 0 14px 34px rgba(23, 71, 100, 0.12);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --section-space: 90px;
}
html, body {
  overflow-x: hidden;
}
body {
  font-family: var(--font-cn);
  background-color: var(--surface);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
}
* {
  box-sizing: border-box;
}
*, *::before, *::after {
  margin: 0;
  padding: 0;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}
a:hover {
  color: var(--brand-dark);
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
}
section {
  position: relative;
}
.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}
.section-light {
  background: var(--bg);
}
.section-head {
  max-width: 860px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head .kicker,
.page-hero .kicker {
  display: inline-flex;
  align-items: center;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 20px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: .02em;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
}
h1, h2, h3, h4 {
  color: var(--text-main);
}
h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
}
h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  padding: 13px 28px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all .25s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(224, 110, 66, 0.2);
}
.btn-accent:hover,
.btn-accent:active {
  background: #D65E34;
  border-color: #D65E34;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(224, 110, 66, 0.3);
}
.btn-ghost {
  background: transparent;
  border-color: var(--brand);
  color: var(--brand);
}
.btn-ghost:hover,
.btn-ghost:active {
  background: var(--brand-soft);
  color: var(--brand-dark);
  border-color: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-lg {
  padding: 15px 34px;
  font-size: 17px;
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
  border-radius: 10px;
}
.kicker {
  letter-spacing: .03em;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.tag-accent {
  background: var(--accent);
  color: #fff;
}
.tag-muted {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
/* ----- 导航 ----- */
.site-header {
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--border);
  min-height: 72px;
  padding: 0;
  z-index: 1080;
}
.site-header .container {
  position: relative;
  min-height: 72px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--brand), var(--brand-dark));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(40, 115, 160, .25);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand-text small {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 3px;
  letter-spacing: .08em;
  white-space: nowrap;
}
.navbar {
  --bs-navbar-padding-y: 0;
  --bs-navbar-padding-x: 0;
}
.main-nav {
  gap: 8px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  margin-right: 12px;
}
.nav-links a,
.header-cta {
  font-size: 15px;
  font-weight: 600;
}
.nav-links li a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 6px 16px;
  color: var(--text-main);
  border-radius: 999px;
}
.nav-links li a:hover {
  color: var(--brand-dark);
  background: var(--brand-soft);
}
.nav-links li.active a {
  background: var(--brand-soft);
  color: var(--brand-dark);
}
.header-cta {
  margin-left: 10px;
  border-radius: 12px;
  padding: 10px 22px;
}
.navbar-toggler {
  border: 0;
  background: transparent;
  box-shadow: none;
  height: 44px;
  width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  color: var(--brand-dark);
}
.navbar-toggler:hover,
.navbar-toggler:focus {
  box-shadow: none;
  background: var(--brand-soft);
}
.navbar-toggler svg {
  width: 26px;
  height: 26px;
}
/* ----- 页内Hero ----- */
.page-hero {
  padding: 70px 0 80px;
  background:
    linear-gradient(115deg, rgba(255,255,255,.98) 0%, rgba(247,250,253,.93) 55%, rgba(231,241,248,.88) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-bottom: 1px solid rgba(222, 231, 239, .6);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb-path {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb-path a {
  color: var(--text-muted);
}
.breadcrumb-path a:hover {
  color: var(--brand);
}
.breadcrumb-path i {
  font-style: normal;
  color: var(--text-muted);
  margin: 0 2px;
}
.page-hero h1 {
  margin: 18px 0 24px;
  font-size: 44px;
  color: var(--text-main);
}
.page-hero h1 .slash {
  color: var(--accent);
  margin: 0 8px;
  font-weight: 700;
}
.hero-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 30px;
}
.page-hero .hero-action {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-panel {
  position: relative;
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(222,231,239,.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  padding: 12px;
  overflow: hidden;
  backdrop-filter: blur(6px);
}
.hero-panel img {
  border-radius: calc(var(--radius-lg) - 10px);
  height: 300px;
  object-fit: cover;
  width: 100%;
}
.hero-panel-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 10px 4px 6px;
}
.hero-panel-caption strong {
  font-size: 15px;
  color: var(--text-main);
  display: block;
}
.hero-panel-caption small {
  color: var(--text-muted);
  font-size: 13px;
}
.hero-badge {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(224,110,66,.25);
}
/* ----- 图文交错区块 ----- */
.sport-split-wrap {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}
.sport-split {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 52px;
  align-items: center;
}
.sport-split + .sport-split {
  margin-top: 78px;
}
.sport-split.copy-right .split-copy {
  grid-column: 1 / 7;
  order: 1;
}
.sport-split.copy-right .split-media {
  grid-column: 7 / 13;
  order: 2;
}
.sport-split.copy-left .split-media {
  grid-column: 1 / 6;
  order: 1;
}
.sport-split.copy-left .split-copy {
  grid-column: 6 / 13;
  order: 2;
}
.split-media {
  position: relative;
}
.split-media::after {
  content: "";
  position: absolute;
  right: -16px;
  bottom: -16px;
  width: 150px;
  height: 150px;
  background: var(--brand-soft);
  border-radius: 40px;
  z-index: -1;
}
.split-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--bg);
  box-shadow: var(--shadow);
}
.split-copy h2 {
  font-size: 31px;
  margin: 16px 0 18px;
}
.split-copy p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 16px;
}
.split-list {
  margin: 20px 0 28px;
}
.split-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-main);
  padding: 8px 0;
  font-size: 15px;
  line-height: 1.7;
}
.split-list .li-ic {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 5px;
  font-weight: 700;
}
/* ----- 流程步骤 ----- */
.process-section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  background: var(--bg);
}
.process-steps {
  display: flex;
  gap: 0;
  align-items: center;
  margin-top: 44px;
}
.process-step {
  position: relative;
  flex: 1;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 28px 32px;
}
.process-step .step-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(224, 110, 66, .1);
  width: 48px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  margin-bottom: 18px;
}
.process-step h3 {
  margin-bottom: 8px;
}
.process-step p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 0;
}
.process-arrow {
  width: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #abc2d3;
}
.process-arrow .arrow-dash {
  width: 100%;
  border-top: 2px dashed #a9c3d6;
  position: relative;
}
.process-arrow .arrow-dash::after {
  content: "";
  position: absolute;
  right: 0;
  top: -5px;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 10px solid #a9c3d6;
  transform: rotate(180deg);
}
/* ----- 栏目主题带 ----- */
.topic-cover {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  background: var(--bg);
}
.topic-cover .container {
  position: relative;
}
.topic-panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.topic-panel .row {
  margin: 0;
}
.topic-panel .col-lg-6 {
  padding: 0;
}
.topic-panel img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  background: var(--bg);
}
.topic-copy {
  padding: 42px 48px;
}
.topic-copy h3 {
  font-size: 27px;
  margin: 12px 0 16px;
}
.topic-copy p {
  color: var(--text-muted);
  line-height: 1.85;
}
.pill-set {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.pill-set span {
  background: var(--brand-soft);
  color: var(--brand-dark);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 600;
  transition: .2s;
}
.pill-set span:hover {
  background: var(--brand);
  color: #fff;
}
/* ----- 内容推荐卡 ----- */
.recommend-section {
  padding: var(--section-space) 0;
  background: var(--surface);
}
.recommend-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.rec-card {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow .25s, transform .25s;
}
.rec-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.rec-card .rec-thumb {
  width: 150px;
  min-width: 150px;
  height: 132px;
  border-radius: 15px;
  overflow: hidden;
  background: var(--bg);
}
.rec-card .rec-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rec-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.rec-info .tag {
  align-self: flex-start;
  margin-bottom: 10px;
}
.rec-info h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  margin-bottom: 6px;
}
.rec-info p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}
.rec-info .rec-foot {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  gap: 4px;
}
.rec-info .rec-foot:hover {
  color: var(--accent);
}
/* ----- FAQ ----- */
.faq-zone {
  background: var(--bg);
  padding: var(--section-space) 0;
}
.faq-zone .container {
  max-width: 900px;
}
.accordion.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.accordion-item {
  border: 0;
  background: transparent;
  border-radius: 20px !important;
  overflow: hidden;
}
.accordion-item .accordion-header {
  background: var(--surface);
}
.accordion-button {
  background: var(--surface);
  border: 1px solid transparent;
  box-shadow: none;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  padding: 22px 28px;
  border-radius: 20px !important;
}
.accordion-button:not(.collapsed) {
  color: var(--brand-dark);
  background: var(--surface);
  box-shadow: none;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-color: var(--brand-soft);
  border-bottom: 1px solid var(--border);
}
.accordion-button:not(.collapsed)::after {
  filter: none;
  transform: rotate(45deg);
  opacity: .75;
}
.accordion-button::after {
  width: 1.1rem;
  height: 1.1rem;
  background-size: 1.1rem;
  opacity: .65;
}
.accordion-button:focus {
  box-shadow: none;
  border-color: var(--brand-soft);
}
.accordion-button:not(.collapsed):hover,
.accordion-button:hover {
  background: #FBFCFE;
}
.accordion-body {
  background: var(--surface);
  color: var(--text-muted);
  line-height: 1.85;
  font-size: 15px;
  padding: 22px 30px 28px;
  border: 1px solid var(--brand-soft);
  border-top: 0;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
}
/* ----- CTA ----- */
.cta-section {
  background: var(--brand-soft);
  padding: 80px 0;
}
.cta-section .container {
  position: relative;
}
.cta-panel {
  background:
    linear-gradient(100deg, rgba(231,241,248,.94), rgba(255,255,255,.88)),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: var(--shadow);
  padding: 60px 54px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 36px;
}
.cta-panel h2 {
  font-size: 30px;
  font-weight: 700;
  margin: 12px 0 14px;
}
.cta-panel p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0;
}
.cta-actions {
  margin-left: auto;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
/* ----- Footer ----- */
.site-footer {
  background: var(--brand-soft);
  padding: 66px 0 0;
}
.footer-hero {
  padding-bottom: 46px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.footer-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
  margin: 22px 0 0;
  max-width: 360px;
}
.footer-col h3 {
  color: var(--text-main);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: .02em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  padding-left: 0;
  position: relative;
}
.footer-col ul li a:hover {
  color: var(--brand-dark);
}
.footer-col ul li a::before {
  content: "";
  width: 5px;
  height: 5px;
  background: #B9CAD8;
  border-radius: 50%;
  position: absolute;
  left: -14px;
  top: 13px;
}
.footer-note {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
}
.footer-bottom {
  border-top: 1px solid rgba(222, 231, 239, .8);
  padding: 22px 0;
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}
.footer-bottom a {
  color: var(--text-muted);
}
/* ----- 响应式 ----- */
@media (max-width: 1199.98px) {
  .nav-links a {
    padding: 5px 12px;
    font-size: 14px;
  }
  .topic-copy {
    padding: 32px 34px;
  }
  .hero-panel img {
    height: 250px;
  }
}
@media (max-width: 991.98px) {
  :root {
    --section-space: 64px;
  }
  .site-header,
  .site-header .container {
    min-height: 66px;
  }
  .navbar-collapse {
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--border);
    padding-bottom: 20px;
  }
  .nav-links {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    margin: 14px 0;
  }
  .nav-links li a {
    justify-content: flex-start;
    width: 100%;
    border-radius: 12px;
    padding: 12px 18px;
    font-size: 16px;
  }
  .header-cta {
    margin: 6px 0 0;
    width: 100%;
  }
  .page-hero {
    padding: 48px 0;
  }
  .page-hero h1,
  .sport-split.copy-right .split-copy h2 {
    font-size: 30px;
  }
  .hero-panel {
    margin-top: 30px;
  }
  .sport-split,
  .sport-split + .sport-split {
    display: block;
    margin-top: 60px;
  }
  .sport-split .split-media {
    margin-top: 30px;
  }
  .sport-split.copy-left .split-copy,
  .sport-split.copy-right .split-copy {
    margin-bottom: 22px;
  }
  .split-media::after {
    display: none;
  }
  .process-steps {
    flex-direction: column;
    align-items: stretch;
  }
  .process-arrow {
    width: 100%;
    height: 44px;
  }
  .process-arrow .arrow-dash {
    width: 0;
    height: 100%;
    border-top: 0;
    border-left: 2px dashed #a9c3d6;
    margin: 0 auto;
  }
  .process-arrow .arrow-dash::after {
    left: 50%;
    top: auto;
    bottom: 0;
    transform: rotate(90deg);
    margin-left: -5px;
  }
  .recommend-cards {
    grid-template-columns: 1fr;
  }
  .topic-panel img {
    max-height: 280px;
  }
  .cta-section {
    padding: 60px 0;
  }
  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 30px;
  }
  .cta-actions {
    margin-left: 0;
  }
}
@media (max-width: 767.98px) {
  .brand-text {
    font-size: 18px;
  }
  .brand-text small {
    font-size: 11px;
  }
  .brand-mark {
    width: 38px;
    height: 38px;
  }
  .page-hero h1 {
    font-size: 28px;
    line-height: 1.35;
  }
  .page-hero h1 .slash {
    margin: 0 3px;
  }
  .hero-lead {
    font-size: 16px;
  }
  h2,
  .section-head h2 {
    font-size: 26px;
  }
  .section-head p {
    font-size: 15px;
  }
  .split-copy h2 {
    font-size: 25px;
  }
  .split-media img,
  .hero-panel img {
    height: 210px;
  }
  .topic-copy {
    padding: 28px 24px;
  }
  .topic-copy h3 {
    font-size: 22px;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .accordion-button {
    font-size: 16px;
    padding: 18px 18px;
  }
  .accordion-body {
    padding: 16px 20px 22px;
  }
  .cta-panel {
    padding: 34px 24px;
  }
  .cta-panel h2 {
    font-size: 25px;
  }
  .footer-hero {
    padding-bottom: 28px;
  }
}
@media (max-width: 520px) {
  .recommend-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .rec-card {
    flex-direction: column;
  }
  .rec-card .rec-thumb {
    width: 100%;
    min-width: 0;
    height: 190px;
  }
  .btn-lg {
    width: 100%;
    padding: 14px 18px;
  }
  .page-hero .hero-action {
    width: 100%;
  }
  .page-hero .hero-action .btn {
    flex: 1 1 100%;
  }
  .footer-col {
    margin-bottom: 24px;
  }
}