/* roulang page: index */
:root{
  --brand:#1F5BE0;
  --brand-dark:#16408F;
  --brand-soft:#EDF2FE;
  --accent:#12A594;
  --accent-soft:#E4F6F3;
  --accent-deep:#0B6F64;
  --cta:#FF7A2F;
  --cta-dark:#E8641C;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --t1:#101828;
  --t2:#475467;
  --t3:#8896AB;
  --footer:#0F1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(16,24,40,.05),0 10px 24px -14px rgba(23,64,143,.20);
  --sh-2:0 2px 4px rgba(16,24,40,.06),0 18px 36px -18px rgba(23,64,143,.28);
  --t:180ms ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t2);
  background:var(--bg);
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{color:var(--t1);margin:0;letter-spacing:0}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.26;font-weight:700}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head p{margin:10px 0 0;max-width:620px;color:var(--t2)}
.link-more{font-weight:600;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"→";transition:transform var(--t)}
.link-more:hover::after{transform:translateX(4px)}
.text-link{font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link::after{content:"→";transition:transform var(--t)}
.text-link:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
.text-link:hover::after{transform:translateX(4px)}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-stuck{box-shadow:0 6px 20px -12px rgba(23,64,143,.35)}
.header-main{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;font-weight:700;
}
.brand-text{font-size:18px;font-weight:700;color:var(--t1);white-space:nowrap}
.brand-text:hover{color:var(--brand-dark)}
.header-search{flex:1 1 auto;max-width:520px;margin:0 auto;position:relative}
.header-search input{
  width:100%;height:44px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#F1F5FB;
  padding:0 48px 0 42px;font-size:15px;color:var(--t1);
  transition:border-color var(--t),background var(--t),box-shadow var(--t);
}
.header-search input::placeholder{color:var(--t3)}
.header-search input:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,91,224,.15);
}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--t3);pointer-events:none}
.search-submit{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border:0;border-radius:9px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--t),transform var(--t);
}
.search-submit:hover{background:var(--brand-dark)}
.search-submit:active{transform:translateY(-50%) scale(.96)}
.header-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--cta);color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  cursor:pointer;transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.btn-main:hover{background:var(--cta-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-main:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.2)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid var(--brand);background:transparent;color:var(--brand);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background var(--t),color var(--t),transform var(--t);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.btn-solid:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-solid:active{transform:translateY(0) scale(.99)}
.btn-solid:focus-visible,.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.2)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform var(--t);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* pill row */
.pill-row{border-bottom:1px solid var(--line);background:#fff}
.pill-inner{display:flex;align-items:center;gap:10px;height:50px;overflow-x:auto;scrollbar-width:none}
.pill-inner::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  background:#F1F5FB;color:var(--t2);font-size:14px;white-space:nowrap;
  transition:background var(--t),color var(--t),transform var(--t);
}
.pill:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.pill.is-active{background:var(--brand);color:#fff}
.pill.is-active:hover{background:var(--brand-dark);color:#fff}
.mobile-drawer{display:none;border-bottom:1px solid var(--line);background:#fff}
.mobile-drawer.open{display:block}
.mobile-drawer ul{padding:8px 0 16px}
.mobile-drawer li a{display:block;padding:11px 0;color:var(--t2);font-weight:600;border-bottom:1px solid var(--line)}
.mobile-drawer li:last-child a{border-bottom:0}
.mobile-drawer li a:hover{color:var(--brand)}
.mobile-drawer li a.is-active{color:var(--brand)}

/* ============ Hero ============ */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);padding:76px 0 0}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero h1{margin-bottom:20px}
.hero-sub{font-size:17px;line-height:1.8;color:var(--t2);max-width:540px;margin-bottom:28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:13px;color:var(--t3)}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;left:-26px;bottom:-26px;width:180px;height:180px;
  border-radius:24px;background:var(--brand-soft);z-index:0;
}
.hero-visual::after{
  content:"";position:absolute;right:-18px;top:-18px;width:110px;height:110px;
  border-radius:20px;background:var(--accent-soft);z-index:0;
}
.hero-visual img{position:relative;z-index:1;border-radius:20px;box-shadow:var(--sh-2);width:100%;aspect-ratio:4/3;object-fit:cover}
.trust-bar{
  margin-top:56px;border-top:1px solid var(--line);background:transparent;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
}
.trust-item{padding:22px 20px;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-item strong{display:block;font-size:19px;color:var(--t1);font-weight:700}
.trust-item span{font-size:13px;color:var(--t3)}

/* ============ 卖点叙事行 ============ */
.feature-grid{display:grid;grid-template-columns:1fr 2fr;gap:56px;align-items:start}
.feature-sticky{position:sticky;top:120px}
.feature-sticky p{margin-top:14px;color:var(--t2)}
.feature-rows{border-top:1px solid var(--line)}
.feature-row{
  display:grid;grid-template-columns:88px 56px 1fr auto;gap:20px;align-items:center;
  padding:28px 0;border-bottom:1px solid var(--line);transition:background var(--t);
}
.feature-row:hover{background:#FBFCFE}
.feature-index{font-size:34px;font-weight:700;color:#D5DEEE;line-height:1}
.feature-row:hover .feature-index{color:var(--brand)}
.feature-icon{
  width:52px;height:52px;border-radius:14px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;color:var(--accent-deep);
}
.feature-icon svg{width:24px;height:24px}
.feature-row h3{margin-bottom:6px}
.feature-row p{margin:0;font-size:15px;color:var(--t2)}
.feature-row .text-link{white-space:nowrap}

/* ============ 场景演示 ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene.reverse .scene-media{order:2}
.scene-media{position:relative}
.scene-media img{border-radius:var(--r-img);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:var(--sh-1)}
.scene-tag{
  position:absolute;left:14px;top:14px;height:30px;padding:0 13px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-dark);font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;
}
.scene-body h3{margin-bottom:12px}
.scene-body p{margin-bottom:8px}
.scene-body .text-link{margin-top:12px}

/* ============ 社会认同 ============ */
.social{background:var(--brand-soft)}
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.stat-card{
  background:#fff;border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat-card strong{display:block;font-size:32px;line-height:1.2;color:var(--brand);font-weight:700}
.stat-card span{font-size:14px;color:var(--t2)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote-card{
  background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  border:1px solid transparent;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,91,224,.2)}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-soft),var(--accent-soft));
  color:var(--brand-dark);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.quote-head b{display:block;font-size:15px;color:var(--t1)}
.quote-head small{font-size:12px;color:var(--t3)}
.quote-card p{font-size:15px;margin-bottom:0}
.partner-row{
  margin-top:32px;padding-top:24px;border-top:1px solid rgba(31,91,224,.14);
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.partner-row span{font-size:13px;color:var(--t3)}
.partner-logo{
  height:34px;padding:0 16px;border-radius:9px;background:#fff;color:var(--t2);
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;
}

/* ============ 内容列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:#fff;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,91,224,.2)}
.post-thumb{position:relative;display:block;overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px 14px 0 0;transition:transform 320ms ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-badge{
  position:absolute;left:12px;top:12px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-dark);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;
}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a{color:var(--t1)}
.post-body h3 a:hover{color:var(--brand)}
.post-body p{font-size:14px;line-height:1.7;color:var(--t2);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);border-top:1px solid var(--line);padding-top:14px;
}
.post-meta .date{display:inline-flex;align-items:center;gap:6px}
.post-meta svg{width:14px;height:14px}
.post-meta .read{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.post-card:hover .post-meta .read{gap:9px}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.empty-state p{margin:0;color:var(--t2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
  background:#fff;border:0;border-radius:14px !important;margin-bottom:12px;
  box-shadow:var(--sh-1);overflow:hidden;
}
.accordion-button{
  background:#fff;color:var(--t1);font-size:16px;font-weight:600;
  padding:20px 22px;border-radius:14px !important;box-shadow:none !important;
}
.accordion-button:not(.collapsed){
  color:var(--brand-dark);background:#fff;border-left:4px solid var(--brand);padding-left:18px;
}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(31,91,224,.15) !important;border-color:transparent}
.accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;color:var(--t3);
  width:auto;height:auto;line-height:1;transform:none;transition:transform var(--t),color var(--t);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand)}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.75;color:var(--t2)}

/* ============ CTA 带 ============ */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px;text-align:center;box-shadow:var(--sh-1);
}
.cta-band h2{margin-bottom:12px}
.cta-band p{max-width:560px;margin:0 auto 26px;color:var(--t2)}

/* ============ Footer ============ */
.site-footer{background:var(--footer);color:#B9C3D6;padding:64px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;color:#8E9CB5;margin:16px 0 20px;max-width:280px}
.qr-box{
  width:88px;height:88px;border-radius:12px;background:#182741;border:1px solid #223252;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11px;color:#7C8CA8;line-height:1.4;
}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#B9C3D6;font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;border-top:1px solid #1E2C48;padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8CA8;
}

/* ============ 固定转化条 ============ */
.float-card{
  position:fixed;right:24px;bottom:24px;z-index:1040;width:320px;
  background:#fff;border-radius:14px;box-shadow:0 10px 30px -12px rgba(23,64,143,.4),0 1px 2px rgba(16,24,40,.06);
  border:1px solid var(--line);padding:18px 20px;
}
.float-card b{display:block;font-size:14px;color:var(--t1);font-weight:600;margin-bottom:4px}
.float-card small{display:block;font-size:12px;color:var(--t3);margin-bottom:12px}
.float-card .row-actions{display:flex;align-items:center;gap:14px}
.float-card .btn-main{height:38px;padding:0 16px;font-size:14px}
.mobile-bar{display:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container{width:96%;padding:0 20px}
  .header-search{max-width:420px}
}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual::before,.hero-visual::after{display:none}
  .trust-bar{grid-template-columns:repeat(2,1fr)}
  .trust-item:nth-child(2n){border-right:0}
  .trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .feature-grid{grid-template-columns:1fr;gap:28px}
  .feature-sticky{position:static}
  .feature-row{grid-template-columns:64px 48px 1fr;gap:16px}
  .feature-row .text-link{grid-column:3;margin-top:6px}
  .scene{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .scene.reverse .scene-media{order:0}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .float-card{display:none}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;
    height:56px;background:var(--brand);align-items:center;justify-content:space-between;
    gap:12px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-bar .mb-text{color:#fff;font-size:14px;font-weight:600}
  .mobile-bar .mb-btn{
    height:36px;padding:0 16px;border-radius:9px;background:#fff;color:var(--brand);
    font-size:14px;font-weight:700;display:inline-flex;align-items:center;
  }
  .mobile-bar .mb-link{color:rgba(255,255,255,.85);font-size:13px}
  body{padding-bottom:72px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .header-main{height:auto;flex-wrap:wrap;padding:10px 0;gap:12px}
  .header-main .brand{order:1}
  .nav-toggle{display:flex;order:2;margin-left:auto}
  .header-cta{order:3;display:none}
  .header-search{order:4;flex:0 0 100%;max-width:none;margin:0}
  .hero{padding:44px 0 0}
  .hero-sub{font-size:16px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{flex:1 1 auto;justify-content:center}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .post-grid{grid-template-columns:1fr}
  .stat-cards{grid-template-columns:1fr;gap:14px}
  .cta-band{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .scene-body h3{font-size:18px}
}
@media (max-width:419.98px){
  body{font-size:15px}
  h1{font-size:26px}
  h2{font-size:22px}
  .container{padding:0 16px}
  .feature-index{font-size:26px}
  .feature-row{grid-template-columns:52px 40px 1fr;gap:12px}
  .feature-icon{width:40px;height:40px;border-radius:11px}
}

/* roulang page: category1 */
:root{
  --primary:#1F5BE0;
  --primary-dark:#16408F;
  --primary-soft:#EDF2FE;
  --accent:#12A594;
  --accent-soft:#E6F6F3;
  --orange:#FF7A2F;
  --orange-dark:#E56519;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --line-strong:#DCE3EF;
  --ink:#101828;
  --text:#475467;
  --muted:#8896AB;
  --footer-bg:#0F1A2E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --radius-img:14px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(16,24,40,.05), 0 10px 24px -14px rgba(23,64,143,.20);
  --shadow-hover:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -18px rgba(23,64,143,.28);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-bottom:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.26;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),text-decoration-color var(--ease);}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.20);border-radius:8px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (max-width:1199px){ .container{width:96%;} }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(23,64,143,.30);}
.header-main{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-size:18px;
  font-weight:700;
}
.brand:hover{color:var(--primary);}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:var(--primary);
  color:#fff;font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-mark::before{content:"";display:none;}
.brand-text{white-space:nowrap;}
.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:520px;
  margin:0 auto;
  height:44px;
  display:flex;
  align-items:center;
  background:#F1F5FB;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-input);
  padding:0 6px 0 40px;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,91,224,.15);
}
.nav-search .search-icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--muted);
}
.nav-search input{
  flex:1 1 auto;
  height:100%;
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted);}
.search-submit{
  width:34px;height:34px;border:0;border-radius:9px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--ease),transform var(--ease);
}
.search-submit:hover{background:var(--primary-dark);}
.search-submit:active{transform:scale(.96);}
.header-cta{
  flex:0 0 auto;
  height:44px;
  display:inline-flex;align-items:center;
  padding:0 18px;
  border-radius:var(--radius-btn);
  background:var(--orange);
  color:#fff;font-size:15px;font-weight:600;
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.header-cta:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow);}
.nav-toggle{
  display:none;
  width:40px;height:40px;margin-left:auto;
  border:1px solid var(--line-strong);
  border-radius:10px;background:#fff;
  align-items:center;justify-content:center;
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.pill-row{border-top:1px solid var(--line);background:#FBFCFE;}
.pill-inner{
  display:flex;
  align-items:center;
  gap:10px;
  padding-top:10px;
  padding-bottom:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.pill-inner::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;
  height:32px;
  display:inline-flex;align-items:center;
  padding:0 14px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--text);
  background:#fff;
  border:1px solid var(--line);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.pill:hover{background:var(--primary-soft);color:var(--primary);border-color:#D6E1FB;}
.pill.is-active{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:active{transform:scale(.99);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow);}
.btn-outline{background:#fff;color:var(--primary);border-color:#C9D8F7;}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-1px);}
.btn-orange{background:var(--orange);color:#fff;}
.btn-orange:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.text-link::after{content:"→";transition:transform var(--ease);}
.text-link:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px;}
.text-link:hover::after{transform:translateX(3px);}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb-bar ol{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:12px 0;font-size:13.5px;color:var(--muted);
}
.breadcrumb-bar li+li::before{content:"/";margin-right:8px;color:#C3CCDD;}
.breadcrumb-bar a{color:var(--text);}
.breadcrumb-bar a:hover{color:var(--primary);}
.breadcrumb-bar [aria-current]{color:var(--muted);}

/* ---------- 页面头 ---------- */
.page-hero{padding:56px 0 64px;background:#fff;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;margin-bottom:16px;
  border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  font-size:12.5px;font-weight:600;
}
.hero-copy h1{margin-bottom:16px;}
.hero-copy .lead{font-size:16.5px;line-height:1.8;color:var(--text);max-width:38em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:12px 28px;
  margin-top:28px;padding-top:20px;
  border-top:1px solid var(--line);
}
.trust-row li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
}
.trust-row li::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--accent);flex:0 0 auto;
}
.hero-media{position:relative;}
.hero-media::before{
  content:"";position:absolute;right:-16px;top:-16px;
  width:120px;height:120px;border-radius:24px;
  background:var(--primary-soft);
  z-index:0;
}
.hero-media img{
  position:relative;z-index:1;
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-soft{background:var(--primary-soft);}
.section-plain{background:#fff;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:15.5px;color:var(--text);}

/* ---------- 流程时间轴 ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.timeline{position:relative;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:48px minmax(0,1fr);
  gap:20px;
  padding-bottom:32px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:not(:last-child)::after{
  content:"";
  position:absolute;left:23px;top:52px;bottom:4px;
  width:2px;background:#DCE3EF;
}
.tl-dot{
  width:48px;height:48px;border-radius:50%;
  background:var(--primary-soft);
  border:1px solid #D6E1FB;
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.tl-body h3{margin-bottom:8px;font-size:18px;}
.tl-body p{font-size:15px;line-height:1.75;color:var(--text);max-width:36em;}
.tl-note{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:10px;font-size:13px;color:var(--accent);
  background:var(--accent-soft);
  padding:5px 12px;border-radius:999px;
}
.side-panel{display:flex;flex-direction:column;gap:16px;}
.side-panel > h3{font-size:16px;color:var(--muted);font-weight:600;letter-spacing:.02em;}
.side-card{
  background:var(--primary-soft);
  border-radius:var(--radius-card);
  padding:20px;
}
.side-card h4{font-size:15.5px;margin-bottom:6px;}
.side-card p{font-size:14px;line-height:1.7;color:var(--text);}
.side-panel .text-link{margin-top:4px;}

/* ---------- 图文块 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
}
.split-copy h2{margin-bottom:16px;}
.split-copy p{font-size:15.5px;margin-bottom:20px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:grid;grid-template-columns:28px minmax(0,1fr);
  gap:14px;align-items:start;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list .num{
  width:28px;height:28px;border-radius:9px;
  background:var(--accent-soft);color:#0C7A6C;
  font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list strong{display:block;color:var(--ink);font-size:15.5px;font-weight:600;margin-bottom:2px;}
.check-list span{font-size:14px;color:var(--text);line-height:1.7;}

/* ---------- 常见卡点对照 ---------- */
.pair-list{border-top:1px solid var(--line);}
.pair-row{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:24px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.pair-row dt{
  font-size:15.5px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.pair-row dt::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--orange);flex:0 0 auto;
}
.pair-row dd{margin:0;font-size:14.5px;line-height:1.75;color:var(--text);}

/* ---------- 继续了解 ---------- */
.more-grid{
  display:grid;
  grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:40px;
  align-items:start;
}
.more-links{display:flex;flex-direction:column;}
.more-links a{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  font-size:16px;font-weight:600;
  transition:color var(--ease),padding var(--ease);
}
.more-links a:hover{color:var(--primary);padding-left:10px;}
.more-links a span{font-size:13px;font-weight:400;color:var(--muted);}

/* ---------- 提示条 ---------- */
.notice-bar{
  display:flex;gap:12px;align-items:flex-start;
  border-left:4px solid var(--accent);
  background:#fff;
  border-radius:0 14px 14px 0;
  padding:16px 20px;
  font-size:14.5px;
  color:var(--text);
}
.notice-bar strong{color:var(--ink);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  padding:64px 0;
  background:#fff;
  border-top:1px solid var(--line);
}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:24px;
}
.cta-inner h2{margin-bottom:8px;}
.cta-inner p{font-size:15.5px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#B9C4D8;padding:64px 0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));
  gap:32px;
}
.site-footer .brand{color:#fff;margin-bottom:16px;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-mark{background:var(--primary);}
.footer-brand p{font-size:14px;line-height:1.75;color:#93A1BB;max-width:34em;}
.qr-box{
  margin-top:20px;
  width:132px;height:92px;
  border:1px dashed rgba(255,255,255,.24);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:#7C8AA6;text-align:center;
  line-height:1.5;
}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#B9C4D8;font-size:14px;}
.footer-col a:hover{color:#7FA6FF;}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7C8AA6;
}

/* ---------- 固定转化条 ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:90;}
.float-cta-card{
  width:340px;
  background:#fff;
  border-radius:14px;
  box-shadow:0 2px 6px rgba(16,24,40,.08), 0 20px 40px -20px rgba(23,64,143,.35);
  padding:16px;
  display:flex;flex-direction:column;gap:10px;
}
.float-cta-card strong{font-size:15px;color:var(--ink);}
.float-cta-card .float-text{font-size:13px;color:var(--text);line-height:1.6;}
.float-cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.float-link{font-size:13.5px;font-weight:600;color:var(--primary);}
.float-link:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- 响应式 ---------- */
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:-1;}
  .hero-media::before{display:none;}
  .flow-grid{grid-template-columns:1fr;gap:32px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .more-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:56px 0;}
  .page-hero{padding:40px 0 48px;}
}
@media (max-width:767px){
  .header-main{flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:10px;min-height:60px;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;margin:0;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .pill-inner{display:none;}
  .pill-row.is-open .pill-inner{
    display:flex;flex-direction:column;align-items:stretch;
    padding-top:8px;padding-bottom:12px;
  }
  .pill-row.is-open .pill{justify-content:flex-start;height:40px;border-radius:10px;}
  .pair-row{grid-template-columns:1fr;gap:8px;}
  .float-cta{right:0;left:0;bottom:0;}
  .float-cta-card{
    width:100%;border-radius:0;flex-direction:row;align-items:center;
    justify-content:space-between;gap:12px;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    box-shadow:0 -6px 18px -12px rgba(16,24,40,.35);
  }
  .float-cta-card .float-text{display:none;}
  .float-cta-card strong{display:none;}
  .float-cta-actions{width:100%;justify-content:space-between;gap:10px;}
  body{padding-bottom:72px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:26px;line-height:1.32;}
  h2{font-size:22px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .tl-item{grid-template-columns:40px minmax(0,1fr);gap:14px;}
  .tl-dot{width:40px;height:40px;font-size:15px;}
  .tl-item:not(:last-child)::after{left:19px;}
  .site-footer{padding:48px 0 20px;}
}

/* roulang page: article */
:root{
  --primary:#1F5BE0;
  --primary-dark:#16408F;
  --primary-light:#EDF2FE;
  --accent:#12A594;
  --accent-light:#E6F7F4;
  --warm:#FF7A2F;
  --warm-dark:#E8621A;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --line-strong:#DCE3EF;
  --title:#101828;
  --text:#475467;
  --muted:#8896AB;
  --footer:#0F1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(16,24,40,.05), 0 10px 24px -14px rgba(23,64,143,.20);
  --sh-2:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -18px rgba(23,64,143,.28);
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t)}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--title);line-height:1.3;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform var(--t),background-color var(--t),border-color var(--t),color var(--t),box-shadow var(--t);--bs-btn-border-radius:10px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.20)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:scale(.99) translateY(0)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--title)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:#fff;transform:translateY(-1px)}
.btn-warm{background:var(--warm);border-color:var(--warm);color:#fff}
.btn-warm:hover{background:var(--warm-dark);border-color:var(--warm-dark);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-more{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"→";transition:transform var(--t)}
.link-more:hover::after{transform:translateX(3px)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(16,24,40,.45)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--title);white-space:nowrap}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 auto}
.brand:hover{color:var(--primary)}
.nav-search{position:relative;flex:1 1 auto;max-width:520px;margin:0 auto;display:flex;align-items:center}
.nav-search .search-icon{position:absolute;left:14px;width:18px;height:18px;color:var(--muted);pointer-events:none}
.nav-search input{
  width:100%;height:44px;border-radius:var(--r-input);
  border:1px solid var(--line-strong);background:#F1F5FB;
  padding:0 48px 0 42px;font-size:15px;color:var(--title);
  transition:background-color var(--t),border-color var(--t),box-shadow var(--t);
}
.nav-search input::placeholder{color:#9AA8BD}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,91,224,.15)}
.nav-search button{position:absolute;right:6px;width:34px;height:34px;border:0;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;cursor:pointer;transition:background-color var(--t)}
.nav-search button:hover{background:var(--primary-dark)}
.nav-search button svg{width:16px;height:16px}
.header-cta{flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:11px;background:#fff;cursor:pointer;padding:0;place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--title);border-radius:2px;margin:3px auto}
.pill-row{background:var(--surface);border-bottom:1px solid var(--line)}
.pill-row .pill-inner{display:flex;gap:10px;align-items:center;overflow-x:auto;padding-top:10px;padding-bottom:12px;scrollbar-width:none}
.pill-row .pill-inner::-webkit-scrollbar{display:none}
.pill{display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;font-size:14px;color:var(--text);background:#F1F5FB;white-space:nowrap;transition:background-color var(--t),color var(--t)}
.pill:hover{background:var(--primary-light);color:var(--primary)}
.pill.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 24px 18px}
.mobile-drawer a{display:block;padding:11px 0;font-size:15px;color:var(--text);border-bottom:1px solid var(--line)}
.mobile-drawer a:last-child{border-bottom:0}
.mobile-drawer.is-open{display:block}

/* ---------- Breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:22px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#C6CFDE}
.crumb .current{color:var(--text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article head ---------- */
.article-head{padding:18px 0 26px;border-bottom:1px solid var(--line)}
.badge-soft{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600}
.badge-accent{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--accent-light);color:#0B7F72;font-size:12px;font-weight:600}
.article-head h1{font-size:clamp(26px,3.6vw,38px);font-weight:700;line-height:1.3;margin:16px 0 0;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:16px;font-size:13px;color:var(--muted)}
.article-meta .m-item{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:14px;height:14px}
.article-meta a{color:var(--primary)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6CFDE}

/* ---------- Layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;padding:32px 0 72px;align-items:start}
.article-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:36px 40px;box-shadow:var(--sh-1)}
.article-lead{font-size:16px;color:var(--text);background:var(--primary-light);border-radius:var(--r-card);padding:16px 20px;margin-bottom:26px;border-left:4px solid var(--primary)}

/* ---------- Article body ---------- */
.article-body{max-width:100%;font-size:16px;line-height:1.75;color:var(--text);word-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 16px}
.article-body h2{font-size:24px;font-weight:700;line-height:1.35;color:var(--title);margin:36px 0 14px;padding-left:14px;border-left:4px solid var(--primary)}
.article-body h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--title);margin:26px 0 10px}
.article-body h4{font-size:17px;font-weight:600;color:var(--title);margin:22px 0 8px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;line-height:1.9}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:4px 0}
.article-body strong{color:var(--title)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--primary-dark);text-underline-offset:5px}
.article-body blockquote{margin:22px 0;padding:16px 20px;background:#F8FAFE;border-left:4px solid var(--primary);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--title)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px auto;box-shadow:var(--sh-1)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:22px 0;font-size:14px;white-space:normal}
.article-body th{background:#F1F5FB;color:var(--title);font-weight:600;text-align:left;padding:11px 14px;border:1px solid var(--line-strong);white-space:nowrap}
.article-body td{padding:11px 14px;border:1px solid var(--line);vertical-align:top}
.article-body tr:nth-child(even) td{background:#FAFBFE}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.article-body code{background:#F1F5FB;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--primary-dark)}

/* ---------- Tags / post nav / related ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--muted)}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;font-size:13px;background:#F1F5FB;color:var(--text);transition:background-color var(--t),color var(--t),transform var(--t)}
.tag:hover{background:var(--primary-light);color:var(--primary);transform:translateY(-2px)}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px}
.post-nav-item{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.post-nav-item:hover{transform:translateY(-4px);border-color:rgba(31,91,224,.35);box-shadow:var(--sh-2)}
.post-nav-item .pn-dir{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.post-nav-item .pn-title{display:block;font-size:16px;font-weight:600;color:var(--title);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-block{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.related-block h2{font-size:20px;font-weight:700;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.rel-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(31,91,224,.35);box-shadow:var(--sh-2)}
.rel-cover{aspect-ratio:16/9;overflow:hidden;background:#F1F5FB}
.rel-cover img{width:100%;height:100%;object-fit:cover}
.rel-card .rel-body{padding:14px 16px 18px}
.rel-card h3{font-size:16px;font-weight:600;margin:10px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.notfound{text-align:center;padding:56px 20px}
.notfound .nf-icon{width:64px;height:64px;border-radius:20px;background:var(--primary-light);color:var(--primary);display:grid;place-items:center;margin:0 auto 18px;font-size:26px;font-weight:700}
.notfound h2{font-size:22px;margin-bottom:10px}
.notfound p{font-size:14px;color:var(--muted);margin-bottom:20px}

/* ---------- Sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--primary)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{font-size:14px;color:var(--text);padding:7px 10px;border-radius:8px;border-left:2px solid transparent;transition:background-color var(--t),color var(--t),border-color var(--t)}
.toc-list a:hover{background:var(--primary-light);color:var(--primary);border-left-color:var(--primary)}
.toc-empty{font-size:13px;color:var(--muted)}
.hot-list{display:flex;flex-direction:column;gap:12px}
.hot-list a{display:flex;gap:12px;align-items:flex-start;padding:10px;border-radius:12px;transition:background-color var(--t)}
.hot-list a:hover{background:#F8FAFE}
.hot-thumb{width:56px;height:42px;border-radius:10px;object-fit:cover;flex:0 0 auto;background:#F1F5FB}
.hot-list .hot-title{font-size:14px;font-weight:600;color:var(--title);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-list .hot-tag{font-size:12px;color:var(--muted);margin-top:4px;display:block}
.side-help{background:var(--primary-light);border-color:#D7E2FB}
.side-help p{font-size:13px;color:var(--text);margin-bottom:14px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--primary-light);border-top:1px solid #DCE6FB;border-bottom:1px solid #DCE6FB}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding:52px 0}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px);font-weight:700}
.cta-inner p{font-size:15px;color:var(--text);margin-top:8px;max-width:620px}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer);color:#B7C2D6;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand{color:#fff;font-size:18px;font-weight:700}
.footer-brand .brand:hover{color:#8FB2FF}
.footer-brand .brand-mark{background:var(--primary)}
.footer-brand p{font-size:14px;line-height:1.8;color:#93A1BB;margin:16px 0 18px;max-width:320px}
.qr-box{width:112px;height:112px;border-radius:14px;border:1px dashed #33415C;display:grid;place-items:center;text-align:center;font-size:12px;color:#7C8AA5;line-height:1.7}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:#93A1BB}
.footer-col a:hover{color:#8FB2FF}
.footer-bottom{margin-top:48px;border-top:1px solid #1E2B45;padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7C8AA5}

/* ---------- Float CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;width:320px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-2);padding:18px;z-index:1040}
.float-cta p{font-size:13px;color:var(--text);margin-bottom:12px;line-height:1.7}
.float-cta .fc-actions{display:flex;align-items:center;gap:14px}
.float-cta .fc-actions .btn{height:40px;padding:0 16px;font-size:14px}
.link-plain{font-size:13px;color:var(--primary);font-weight:600}
.link-plain:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{max-width:96%}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding:26px 0 56px}
  .sidebar{position:static}
  .article-card{padding:26px 24px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .header-cta{display:none}
  .nav-search{max-width:none}
}
@media (max-width:767px){
  body{padding-bottom:78px}
  .container{padding:0 16px;max-width:100%}
  .header-inner{min-height:60px;flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:12px}
  .nav-toggle{display:grid;order:3;margin-left:auto}
  .brand{order:1}
  .nav-search{order:4;flex:1 0 100%;max-width:100%;margin:0}
  .brand-text{font-size:16px}
  .pill-row .pill-inner{padding-top:8px;padding-bottom:10px}
  .crumb{padding-top:16px}
  .article-head{padding:14px 0 20px}
  .article-head h1{margin-top:12px}
  .article-card{padding:22px 18px}
  .article-body h2{font-size:21px;margin-top:28px}
  .article-body h3{font-size:18px;margin-top:22px}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{padding:40px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding-top:48px}
  .float-cta{left:0;right:0;bottom:0;width:100%;border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:0 -6px 24px -18px rgba(16,24,40,.5);padding:9px 16px calc(9px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:14px}
  .float-cta p{display:none}
  .float-cta .fc-actions{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .float-cta .fc-actions .btn{height:38px;flex:1 1 auto;max-width:200px}
}
@media (max-width:420px){
  .brand-text{font-size:15px}
  .article-card{padding:18px 15px}
  .article-body{font-size:15px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .cta-inner h2{font-size:20px}
}

/* roulang page: category2 */
:root{
  --brand:#1F5BE0;
  --brand-dark:#16408F;
  --brand-soft:#EDF2FE;
  --accent:#12A594;
  --accent-soft:#E6F6F4;
  --cta:#FF7A2F;
  --cta-dark:#E8641D;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --text:#101828;
  --text-body:#475467;
  --text-muted:#8896AB;
  --footer-bg:#0F1A2E;
  --danger:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(16,24,40,.05), 0 10px 24px -14px rgba(23,64,143,.20);
  --sh-2:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -18px rgba(23,64,143,.28);
  --tr:180ms ease;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.26;font-weight:700;color:var(--text);letter-spacing:0;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;color:var(--text);letter-spacing:0;}
h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text);}
h4{font-size:16px;line-height:1.4;font-weight:600;color:var(--text);}
p{font-size:16px;line-height:1.75;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.20);border-radius:6px;}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(23,64,143,.28);}
.header-main{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
  font-weight:700;
}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#3F7BF0);
  color:#fff;
  font-size:16px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.brand-text{font-size:18px;font-weight:700;white-space:nowrap;}

.search-box{
  flex:1 1 auto;
  max-width:520px;
  margin:0 auto;
  position:relative;
  display:flex;
  align-items:center;
  background:#F1F5FB;
  border:1px solid #DCE3EF;
  border-radius:var(--r-input);
  height:44px;
  padding:0 6px 0 14px;
  transition:border-color var(--tr),background var(--tr),box-shadow var(--tr);
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,91,224,.15);
}
.search-box .search-ico{flex-shrink:0;color:var(--text-muted);}
.search-box input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  height:42px;
  padding:0 10px;
  font-size:15px;
  color:var(--text);
}
.search-box input::placeholder{color:var(--text-muted);}
.search-box input:focus{outline:none;}
.search-submit{
  flex-shrink:0;
  width:34px;height:34px;
  border:0;
  border-radius:9px;
  background:var(--brand);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background var(--tr),transform var(--tr);
}
.search-submit:hover{background:var(--brand-dark);}
.search-submit:active{transform:scale(.96);}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--cta);color:#fff;box-shadow:0 8px 18px -10px rgba(255,122,47,.65);}
.btn-primary:hover{background:var(--cta-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:#fff;color:var(--brand);border-color:#C7D7F8;}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0) scale(.99);}
.btn-solid{background:var(--brand);color:#fff;box-shadow:0 8px 18px -10px rgba(31,91,224,.6);}
.btn-solid:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0) scale(.99);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--text);
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

.pill-row{
  border-top:1px solid var(--line);
  background:#FBFCFE;
}
.pill-inner{
  display:flex;
  align-items:center;
  gap:10px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
}
.pill-inner::-webkit-scrollbar{display:none;}
.pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-body);
  background:transparent;
  border:1px solid transparent;
  white-space:nowrap;
  transition:background var(--tr),color var(--tr),border-color var(--tr);
}
.pill:hover{background:var(--brand-soft);color:var(--brand-dark);}
.pill.is-active{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:#C7D7F8;
  font-weight:600;
}

.mobile-nav{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:12px 0 16px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--text-body);
  border-bottom:1px solid var(--line);
}
.mobile-nav a.is-active{color:var(--brand);font-weight:600;}
.mobile-nav .btn{width:100%;margin-top:14px;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  padding:14px 0;
  font-size:14px;
  color:var(--text-muted);
}
.crumb a{color:var(--text-muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CCDD;}

/* ---------- Section base ---------- */
.section{padding:88px 0;}
.section-sm{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head p{margin-top:14px;color:var(--text-body);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.link-more:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  padding:56px 0 64px;
  background:#fff;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:380px;height:380px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(31,91,224,.14),rgba(31,91,224,0) 70%);
  pointer-events:none;
}
.page-head-inner{position:relative;max-width:820px;}
.page-head h1{margin-bottom:18px;}
.page-head h1 .hl{color:var(--brand);}
.page-lead{
  font-size:17px;
  color:var(--text-body);
  max-width:700px;
}
.page-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand);
}
.tag-teal{background:var(--accent-soft);color:#0B7C70;}

/* ---------- Stat cards ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.stat-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,91,224,.2);}
.stat-num{
  font-size:40px;
  line-height:1.1;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--text-muted);}
.stat-label{
  margin-top:6px;
  font-size:14px;
  font-weight:600;
  color:var(--text);
}
.stat-card p{margin-top:12px;font-size:14px;line-height:1.7;color:var(--text-body);}
.stat-ico{
  width:38px;height:38px;
  border-radius:11px;
  background:var(--accent-soft);
  color:#0B7C70;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
}

/* ---------- Media rows ---------- */
.media-stack{display:flex;flex-direction:column;gap:64px;}
.media-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.media-row.is-reverse .media-figure{order:2;}
.media-figure{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.media-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  transition:transform 400ms ease;
}
.media-row:hover .media-figure img{transform:scale(1.02);}
.fig-badge{
  position:absolute;
  left:16px;
  top:16px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(255,255,255,.94);
  color:var(--brand);
  font-size:12px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  font-variant-numeric:tabular-nums;
}
.media-body h3{margin-bottom:14px;}
.media-body p{font-size:15.5px;margin-bottom:10px;}
.media-body .link-more{margin-top:12px;}

/* ---------- Checklist ---------- */
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text-body);
}
.check-list li .dot{
  flex-shrink:0;
  width:20px;height:20px;
  margin-top:2px;
  border-radius:6px;
  background:var(--brand-soft);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  font-weight:700;
}

/* ---------- Tip bar ---------- */
.tip-bar{
  display:flex;
  gap:16px;
  align-items:flex-start;
  border:1.5px solid var(--accent);
  background:var(--accent-soft);
  border-radius:var(--r-card);
  padding:22px 24px;
}
.tip-bar .tip-ico{
  flex-shrink:0;
  width:36px;height:36px;
  border-radius:11px;
  background:#fff;
  color:#0B7C70;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.tip-bar h3{font-size:17px;margin-bottom:6px;color:#0B5F56;}
.tip-bar p{font-size:15px;color:#12564F;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand-soft);
  border-radius:var(--r-lg);
  padding:56px 40px;
  text-align:center;
}
.cta-band h2{max-width:620px;margin:0 auto 16px;}
.cta-band p{max-width:620px;margin:0 auto 28px;color:var(--text-body);}
.cta-band .btn-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--footer-bg);
  color:#A9B4C8;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#2C6BEE,#1F5BE0);}
.footer-brand p{font-size:14px;line-height:1.75;color:#8E9CB4;max-width:300px;}
.qr-box{
  margin-top:20px;
  width:118px;height:118px;
  border:1px dashed #33415C;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  color:#7A879F;
  line-height:1.5;
  padding:8px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#A9B4C8;}
.footer-col a:hover{color:#5B93FF;}
.footer-bottom{
  border-top:1px solid #22304A;
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#7A879F;
}

/* ---------- Floating convert bar ---------- */
.float-convert{
  position:fixed;
  right:24px;
  bottom:24px;
  width:320px;
  max-width:calc(100% - 48px);
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh-2);
  padding:16px;
  z-index:90;
}
.float-convert .fc-title{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:4px;
}
.float-convert .fc-desc{
  font-size:13px;
  color:var(--text-muted);
  line-height:1.6;
  margin-bottom:12px;
}
.float-convert .fc-actions{
  display:flex;
  align-items:center;
  gap:14px;
}
.float-convert .btn{height:40px;padding:0 16px;font-size:14px;}
.fc-link{font-size:13px;color:var(--brand);font-weight:600;}
.fc-link:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{max-width:96%;}
}
@media (max-width:991px){
  .pill-row{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-header{display:none;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-grid .stat-card:last-child{grid-column:1 / -1;}
  .media-row{grid-template-columns:1fr;gap:24px;}
  .media-row.is-reverse .media-figure{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .header-main{
    flex-wrap:wrap;
    height:auto;
    padding:12px 0;
    gap:12px;
  }
  .header-main .brand{order:1;}
  .header-actions{order:2;margin-left:auto;}
  .search-box{order:3;flex:0 0 100%;max-width:none;margin:0;height:42px;}
  .search-box input{height:40px;}
  .page-head{padding:36px 0 44px;}
  .page-lead{font-size:15.5px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-grid .stat-card:last-child{grid-column:auto;}
  .media-stack{gap:44px;}
  .section{padding:56px 0;}
  .section-sm{padding:40px 0;}
  .cta-band{padding:40px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}

  .float-convert{
    left:0;right:0;bottom:0;
    width:auto;max-width:none;
    border-radius:0;
    border:0;
    border-top:1px solid #22304A;
    background:var(--brand);
    box-shadow:0 -8px 24px -12px rgba(23,64,143,.5);
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    display:flex;
    align-items:center;
    gap:12px;
  }
  .float-convert .fc-text{flex:1;min-width:0;}
  .float-convert .fc-title{color:#fff;font-size:13px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .float-convert .fc-desc{display:none;}
  .float-convert .fc-actions{flex-shrink:0;}
  .float-convert .btn{
    height:36px;
    background:var(--cta);
    padding:0 14px;
    font-size:13px;
  }
  .fc-link{color:#fff;font-size:13px;white-space:nowrap;}
}
@media (max-width:419px){
  h1{font-size:26px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  p{font-size:15px;}
  .container{padding-left:16px;padding-right:16px;}
  .stat-num{font-size:34px;}
  .brand-text{font-size:16px;}
  .btn{height:44px;padding:0 16px;font-size:14px;}
  .float-convert .fc-title{display:none;}
}

/* roulang page: category3 */
:root{
  --brand:#1F5BE0;
  --brand-dark:#16408F;
  --brand-light:#EDF2FE;
  --teal:#12A594;
  --teal-light:#E4F6F3;
  --orange:#FF7A2F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --ink:#101828;
  --body:#475467;
  --muted:#8896AB;
  --footer:#0F1A2E;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --r-lg:20px;
  --shadow:0 1px 2px rgba(16,24,40,.05), 0 10px 24px -14px rgba(23,64,143,.20);
  --shadow-hover:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -18px rgba(23,64,143,.28);
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--t),text-decoration-color var(--t)}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:0;font-weight:700}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.26}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.20);border-radius:8px}
.container{width:100%;max-width:1248px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(23,64,143,.35)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;padding-top:10px;padding-bottom:10px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:520px;position:relative;
  display:flex;align-items:center;
  background:#F1F5FB;border:1px solid #E3EAF6;border-radius:var(--r-input);
  height:44px;padding:0 6px 0 14px;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.nav-search:focus-within{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,91,224,.15);
}
.nav-search .search-icon{color:var(--muted);font-size:14px;margin-right:10px}
.nav-search input{
  flex:1 1 auto;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--ink);height:100%;
}
.nav-search input::placeholder{color:var(--muted)}
.search-submit{
  border:0;background:var(--brand);color:#fff;
  width:34px;height:34px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--t);
}
.search-submit:hover{background:var(--brand-dark)}
.header-cta{
  flex:0 0 auto;height:44px;padding:0 20px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--orange);color:#fff;font-weight:600;font-size:15px;
  border-radius:var(--r-btn);white-space:nowrap;
  transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.header-cta:hover{background:#E96617;color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(255,122,47,.7)}
.header-cta:active{transform:translateY(0) scale(.99)}
.nav-toggle{
  display:none;border:1px solid var(--line);background:#fff;
  width:44px;height:44px;border-radius:var(--r-btn);
  color:var(--ink);font-size:17px;cursor:pointer;
}
.pill-row{border-top:1px solid var(--line);background:#fff}
.pill-inner{
  display:flex;align-items:center;gap:10px;
  padding-top:10px;padding-bottom:10px;
  flex-wrap:wrap;
}
.pill{
  display:inline-flex;align-items:center;
  height:32px;padding:0 16px;border-radius:999px;
  background:#F1F5FB;color:var(--body);
  font-size:14px;white-space:nowrap;
  transition:background var(--t),color var(--t);
}
.pill:hover{background:var(--brand-light);color:var(--brand);text-decoration:none}
.pill.is-active{background:var(--brand-light);color:var(--brand);font-weight:600}

/* ---------- Page head ---------- */
.page-head{
  background-image:linear-gradient(rgba(246,248,252,.90),rgba(246,248,252,.95)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:28px 0 52px;
}
.breadcrumb-line{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb-line a{color:var(--muted)}
.breadcrumb-line a:hover{color:var(--brand)}
.breadcrumb-line .sep{color:#C3CCDC}
.head-badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:12px;font-weight:600;
}
.badge-teal{background:var(--teal-light);color:#0B7C6E}
.page-head h1{max-width:900px}
.page-head .lead{
  max-width:760px;margin-top:18px;font-size:17px;line-height:1.7;color:var(--body);
}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-main{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 22px -14px rgba(22,64,143,.8)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid #C9D7F5}
.btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);text-decoration:none;transform:translateY(-1px)}
.btn-main:active,.btn-ghost:active{transform:translateY(0) scale(.99)}

/* ---------- Section basics ---------- */
section{padding:88px 0}
section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--body)}
.section-label{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand);
  margin-bottom:12px;
}

/* ---------- Feature grid (staggered) ---------- */
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;align-items:start;
}
.feature-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;gap:12px;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(31,91,224,.20)}
.feature-card--wide{grid-column:span 2;padding:0;overflow:hidden;gap:0}
.feature-card--wide .card-media{aspect-ratio:16/9;overflow:hidden}
.feature-card--wide .card-media img{width:100%;height:100%;object-fit:cover}
.feature-card--wide .card-body{padding:24px;display:flex;flex-direction:column;gap:12px}
.icon-tile{
  width:44px;height:44px;border-radius:12px;
  background:var(--teal-light);color:#0B7C6E;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.icon-tile.blue{background:var(--brand-light);color:var(--brand)}
.feature-card h3{font-size:18px}
.feature-card p{font-size:15px;color:var(--body);margin:0}
.mini-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--body)}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:2px;background:var(--teal);
}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);margin-top:auto;
}
.arrow-link i{font-size:12px;transition:transform var(--t)}
.arrow-link:hover{color:var(--brand-dark);text-decoration:none}
.arrow-link:hover i{transform:translateX(3px)}

/* ---------- Scenario blocks ---------- */
.scenario{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:32px 0;
}
.scenario + .scenario{border-top:1px solid var(--line)}
.scenario.reverse .scenario-media{order:2}
.scenario-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow)}
.scenario-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scenario-tag{
  position:absolute;left:14px;top:14px;
  background:rgba(15,26,46,.78);color:#fff;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
}
.scenario-body h3{font-size:22px;margin-bottom:14px}
.scenario-body p{font-size:15.5px}
.scenario-list{display:flex;flex-direction:column;gap:10px;margin:18px 0 20px}
.scenario-list li{
  display:flex;gap:10px;font-size:15px;color:var(--body);align-items:flex-start;
}
.scenario-list li i{color:var(--teal);font-size:14px;margin-top:5px}

/* ---------- Spec table list ---------- */
.spec-wrap{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:8px 28px;box-shadow:var(--shadow);
}
.spec-row{
  display:grid;grid-template-columns:230px 1fr;gap:28px;
  padding:24px 0;border-bottom:1px solid var(--line);align-items:start;
}
.spec-row:last-child{border-bottom:0}
.spec-label{display:flex;flex-direction:column;gap:8px}
.spec-label strong{color:var(--ink);font-size:16px}
.spec-label .tag{
  display:inline-flex;width:fit-content;
  padding:3px 10px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:12px;font-weight:600;
}
.spec-label .tag.teal{background:var(--teal-light);color:#0B7C6E}
.spec-desc{font-size:15px}
.spec-desc p{margin-bottom:10px}
.spec-desc a{font-weight:600;font-size:14px}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand);color:#fff;padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.82);max-width:620px;margin:0}
.btn-cta-light{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:#fff;color:var(--brand);font-weight:600;font-size:15px;
  transition:transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-cta-light:hover{color:var(--brand-dark);text-decoration:none;transform:translateY(-1px);box-shadow:0 16px 28px -16px rgba(0,0,0,.5)}
.btn-cta-light:active{transform:translateY(0) scale(.99)}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer);color:#A9B4C7;padding:64px 0 0;font-size:14px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin:16px 0 20px;font-size:14px;line-height:1.75;color:#A9B4C7;max-width:320px}
.qr-box{
  width:120px;height:120px;border-radius:12px;
  border:1px dashed #2C3B56;background:#131F36;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#7C8AA3;line-height:1.6;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#A9B4C7;font-size:14px}
.footer-col a:hover{color:var(--brand);text-decoration:none}
.footer-bottom{
  border-top:1px solid #1D2A44;
  padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8AA3;
}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:320px;max-width:calc(100vw - 32px);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 12px 32px -12px rgba(16,24,40,.28);
  padding:16px 18px;display:flex;flex-direction:column;gap:10px;
}
.float-cta-text{font-size:14px;color:var(--ink);font-weight:600;margin:0}
.float-cta-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;border-radius:var(--r-btn);
  background:var(--orange);color:#fff;font-weight:600;font-size:14px;
  transition:background var(--t);
}
.float-cta-btn:hover{background:#E96617;color:#fff;text-decoration:none}
.float-cta-link{font-size:13px;color:var(--muted)}
.float-cta-link:hover{color:var(--brand);text-decoration:none}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .container{max-width:96%}
}
@media (max-width:991.98px){
  .header-inner{flex-wrap:wrap;gap:12px}
  .nav-search{order:3;flex:1 1 100%;max-width:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-cta{margin-left:auto}
  .pill-inner{display:none;gap:8px;padding-top:12px;padding-bottom:14px}
  .pill-inner.is-open{display:flex;flex-wrap:wrap}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-card--wide{grid-column:span 2}
  .scenario{grid-template-columns:1fr;gap:28px}
  .scenario.reverse .scenario-media{order:0}
  .spec-row{grid-template-columns:1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
}
@media (max-width:767.98px){
  .header-inner{min-height:60px}
  .brand-text{font-size:16px}
  .header-cta{height:40px;padding:0 14px;font-size:14px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--wide{grid-column:span 1}
  .page-head{padding:20px 0 40px}
  section{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  body{padding-bottom:76px}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;max-width:none;
    border-radius:0;border:0;border-top:1px solid var(--line);
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:var(--brand);
  }
  .float-cta-text{color:#fff;font-size:13px}
  .float-cta-btn{background:#fff;color:var(--brand);height:38px;padding:0 16px;font-size:13px}
  .float-cta-btn:hover{background:#EDF2FE;color:var(--brand-dark)}
  .float-cta-link{color:rgba(255,255,255,.82);font-size:13px}
  .float-cta-link:hover{color:#fff}
  .spec-wrap{padding:4px 18px}
}
@media (max-width:419.98px){
  body{font-size:15px}
  .brand-text{font-size:15px}
  .pill{height:30px;padding:0 12px;font-size:13px}
  .btn-main,.btn-ghost{width:100%;justify-content:center}
  .float-cta-text{display:none}
}

/* roulang page: category4 */
:root{
  --brand:#1F5BE0;
  --brand-dark:#16408F;
  --brand-soft:#EDF2FE;
  --teal:#12A594;
  --teal-soft:#E6F6F4;
  --orange:#FF7A2F;
  --orange-dark:#E6621B;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E6EBF4;
  --text:#101828;
  --body:#475467;
  --muted:#8896AB;
  --footer:#0F1A2E;
  --danger:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:14px;
  --r-lg:22px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.05), 0 10px 24px -14px rgba(23,64,143,.20);
  --shadow-md:0 2px 4px rgba(16,24,40,.06), 0 18px 36px -18px rgba(23,64,143,.28);
  --t:180ms ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color var(--t),text-decoration-color var(--t)}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{color:var(--text);letter-spacing:0;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,textarea,select,button{font-family:inherit;font-size:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,91,224,.20)}
.container,.container-fluid{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;--bs-gutter-x:0}
@media (max-width:1199px){.container,.container-fluid{width:96%;max-width:none;padding-left:16px;padding-right:16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(23,64,143,.35)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:700;color:var(--text);white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.search-box{
  flex:1 1 auto;max-width:520px;margin:0 auto;
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 6px 0 14px;
  background:#F1F5FB;border:1px solid #E2E9F5;border-radius:var(--r-input);
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,91,224,.15)}
.search-ico{color:var(--muted);flex:0 0 auto;display:flex}
.search-box input{
  flex:1 1 auto;border:0;background:transparent;outline:none;
  height:100%;font-size:14px;color:var(--text);min-width:0;
}
.search-box input::placeholder{color:var(--muted)}
.search-btn{
  flex:0 0 auto;width:34px;height:34px;border:0;border-radius:9px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--t),transform var(--t);
}
.search-btn:hover{background:var(--brand-dark)}
.search-btn:active{transform:scale(.97)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--orange);color:#fff;font-size:14px;font-weight:600;
  border:0;cursor:pointer;transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.btn-cta:hover{background:var(--orange-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-cta:active{transform:translateY(0) scale(.99)}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;color:var(--text);
}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

.pill-row{background:#fff;border-bottom:1px solid var(--line)}
.pill-inner{display:flex;gap:8px;align-items:center;padding-top:8px;padding-bottom:10px;overflow-x:auto;scrollbar-width:none}
.pill-inner::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;height:32px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:999px;font-size:13px;font-weight:500;
  color:var(--body);background:#F1F5FB;border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.pill:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none}
.pill.is-active{background:var(--brand);color:#fff;border-color:var(--brand)}
.pill.is-active:hover{background:var(--brand-dark);color:#fff}

.mobile-menu{display:none;background:#fff;border-bottom:1px solid var(--line);padding:8px 0 14px}
.mobile-menu.is-open{display:block}
.mobile-menu a{
  display:block;padding:11px 20px;color:var(--body);font-size:15px;border-radius:10px;
}
.mobile-menu a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none}
.mobile-menu a.is-active{color:var(--brand);font-weight:600;background:var(--brand-soft)}

/* ---------- breadcrumb & page head ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:20px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C4CEDE}
.page-head{padding:18px 0 44px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.eyebrow-badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;background:var(--teal-soft);color:#0B7A6D;
  font-size:12px;font-weight:600;margin-bottom:16px;
}
.eyebrow-badge i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:block}
.page-head h1{
  font-size:clamp(30px,4.6vw,46px);line-height:1.26;font-weight:700;max-width:900px;
}
.page-head .lede{max-width:760px;margin-top:16px;font-size:17px;line-height:1.75;color:var(--body)}
.topic-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.topic-pills a{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--body);font-size:14px;font-weight:500;box-shadow:var(--shadow-sm);
  transition:border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.topic-pills a:hover{border-color:rgba(31,91,224,.35);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none}
.topic-pills a .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);opacity:.65}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:32px;max-width:820px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700}
.section-head p{margin-top:12px;font-size:15px;color:var(--body)}

/* ---------- help layout ---------- */
.help-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start}
.faq-group{scroll-margin-top:150px}
.faq-group + .faq-group{margin-top:36px}
.faq-group-title{
  font-size:19px;font-weight:600;margin-bottom:14px;
  display:flex;align-items:center;gap:10px;
}
.faq-group-title::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--brand);display:block}

.faq-acc .accordion-item{
  border:1px solid transparent;background:var(--surface);
  border-radius:14px;box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.faq-acc .accordion-item:hover{border-color:rgba(31,91,224,.20);box-shadow:var(--shadow-md)}
.faq-acc .accordion-button{
  display:flex;align-items:center;width:100%;
  background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:600;line-height:1.55;
  padding:18px 54px 18px 20px;box-shadow:none;
  transition:background var(--t),color var(--t),box-shadow var(--t);
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand);background:var(--brand-soft);box-shadow:inset 4px 0 0 var(--brand);
}
.faq-acc .accordion-button:focus{box-shadow:none;border:0}
.faq-acc .accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(31,91,224,.20)}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:20px;top:50%;margin:0;
  width:16px;height:16px;transform:translateY(-50%);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231F5BE0'><path d='M8 1.4a.95.95 0 0 1 .95.95v4.7h4.7a.95.95 0 1 1 0 1.9h-4.7v4.7a.95.95 0 1 1-1.9 0v-4.7h-4.7a.95.95 0 1 1 0-1.9h4.7v-4.7A.95.95 0 0 1 8 1.4Z'/></svg>");
  background-repeat:no-repeat;background-position:center;background-size:16px 16px;
  transition:transform var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.q-no{
  flex:0 0 auto;width:26px;height:26px;margin-right:10px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.faq-acc .accordion-button:not(.collapsed) .q-no{background:#fff}
.faq-acc .accordion-body{padding:6px 20px 22px 20px;font-size:15px;line-height:1.75;color:var(--body)}
.faq-acc .accordion-body p + p{margin-top:12px}
.faq-acc .accordion-body ul{margin-top:10px}
.faq-acc .accordion-body li{
  position:relative;padding-left:18px;line-height:1.9;
}
.faq-acc .accordion-body li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--teal);
}

/* ---------- ask card ---------- */
.ask-card{
  position:sticky;top:130px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.ask-title{font-size:19px;font-weight:600}
.ask-sub{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:var(--body);font-weight:500;margin-bottom:6px}
.ctrl{
  width:100%;height:44px;padding:0 14px;border:1px solid #DCE3EF;border-radius:var(--r-input);
  background:#fff;color:var(--text);font-size:14px;outline:none;
  transition:border-color var(--t),box-shadow var(--t);
}
textarea.ctrl{height:auto;padding:11px 14px;line-height:1.7;resize:vertical;min-height:110px}
.ctrl::placeholder{color:var(--muted)}
.ctrl:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,91,224,.15)}
.ctrl.is-error{border-color:var(--danger)}
.err{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.err.is-show{display:block}
.btn-primary-full{
  width:100%;height:48px;margin-top:20px;border:0;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary-full:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary-full:active{transform:translateY(0) scale(.99)}
.form-note{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7}
.form-ok{
  margin-top:14px;padding:10px 12px;border-radius:10px;
  background:var(--teal-soft);color:#0B7A6D;font-size:13px;line-height:1.7;
}

/* ---------- self check block ---------- */
.selfcheck{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;
}
.selfcheck-media{position:relative}
.selfcheck-media img{border-radius:var(--r-img);box-shadow:var(--shadow-sm);width:100%;object-fit:cover;aspect-ratio:4/3}
.selfcheck-media .tag{
  position:absolute;left:16px;top:16px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand);font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;
}
.check-list{margin-top:24px;border-top:1px solid var(--line)}
.check-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.check-item .idx{
  flex:0 0 auto;font-size:20px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.4;min-width:34px;
}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:14px;line-height:1.75;color:var(--body)}
.selfcheck .link-more{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:14px;font-weight:600}

/* ---------- support strip ---------- */
.support-strip{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.support-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.support-cell{padding:26px 24px;border-right:1px solid var(--line)}
.support-cell:last-child{border-right:0}
.support-cell .tt{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--text)}
.support-cell .tt i{width:30px;height:30px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.support-cell p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--body)}
.support-cell .meta{margin-top:10px;font-size:12px;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand);border-radius:24px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 20px 40px -28px rgba(23,64,143,.7);
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.82);margin-top:12px;font-size:15px;max-width:620px}
.btn-light-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;
  border:0;cursor:pointer;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),color var(--t);
}
.btn-light-cta:hover{color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(0,0,0,.45);text-decoration:none}
.btn-light-cta:active{transform:translateY(0) scale(.99)}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:#A9B4C7;padding:64px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.75;color:#A9B4C7;max-width:300px}
.qr-box{
  margin-top:18px;width:112px;height:112px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.24);background:rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;line-height:1.6;color:#8C99AF;
}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#A9B4C7}
.footer-col a:hover{color:var(--brand);text-decoration:none}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8C99AF;
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;width:300px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 12px 32px -16px rgba(16,24,40,.4);
  padding:16px 16px 14px;
}
.float-cta p{font-size:13px;color:var(--body);line-height:1.7;margin-bottom:12px}
.float-cta .btn-cta{width:100%;height:42px}
.float-cta .float-link{display:block;margin-top:10px;text-align:center;font-size:13px;color:var(--muted)}
.float-cta .float-link:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .selfcheck{gap:32px}
}
@media (max-width:991.98px){
  .header-inner{flex-wrap:wrap;height:auto;padding-top:12px;padding-bottom:12px;gap:12px}
  .search-box{order:3;max-width:none;flex:1 1 100%;margin:0}
  .header-actions{margin-left:auto}
  .hamburger{display:flex}
  .help-layout{grid-template-columns:1fr}
  .ask-card{position:static;top:auto}
  .selfcheck{grid-template-columns:1fr}
  .selfcheck-media{order:-1}
  .support-row{grid-template-columns:1fr}
  .support-cell{border-right:0;border-bottom:1px solid var(--line)}
  .support-cell:last-child{border-bottom:0}
  .section{padding:64px 0}
  .cta-band{padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  body{padding-bottom:78px}
  .header-inner{height:60px;padding-top:10px;padding-bottom:10px}
  .brand-text{font-size:16px}
  .header-actions .btn-cta{display:none}
  .page-head{padding:14px 0 34px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    display:flex;align-items:center;gap:12px;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    box-shadow:0 -8px 24px -16px rgba(16,24,40,.45);
  }
  .float-cta p{display:none}
  .float-cta .btn-cta{flex:1 1 auto;width:auto;height:44px;margin:0}
  .float-cta .float-link{margin-top:0;flex:0 0 auto;text-align:right;padding:0 4px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-band{border-radius:18px;padding:30px 22px}
  .btn-light-cta{width:100%}
}
@media (max-width:419.98px){
  body{font-size:15px}
  .page-head h1{font-size:26px}
  .faq-acc .accordion-button{font-size:15px;padding:16px 48px 16px 16px}
  .faq-acc .accordion-body{padding:4px 16px 18px}
  .topic-pills a{height:34px;font-size:13px;padding:0 12px}
}