/* roulang page: index */
:root{
  --bs-primary:#1F51D6;
  --bs-primary-rgb:31,81,214;
  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-body-color:#0E1A2B;
  --bs-body-bg:#F5F7FB;
  --bs-link-color:#1F51D6;
  --bs-link-hover-color:#173FA8;
  --bs-border-radius:10px;
  --brand:#1F51D6;
  --brand-dark:#173FA8;
  --brand-soft:#E8EFFD;
  --accent:#0FA98C;
  --accent-soft:#E3F6F2;
  --highlight:#F2994A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --ink-2:#43536B;
  --ink-3:#7A879C;
  --line:#E4E9F3;
  --line-2:#CFD8EA;
  --dark:#0E1A2B;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-xl:24px;
  --sh1:0 1px 2px rgba(14,26,43,.04),0 4px 12px rgba(14,26,43,.05);
  --sh2:0 2px 6px rgba(14,26,43,.05),0 14px 34px rgba(31,81,214,.10);
  --sh3:0 6px 18px rgba(14,26,43,.08),0 24px 48px rgba(31,81,214,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{max-width:1200px;padding-left:32px;padding-right:32px;}
@media (min-width:1400px){.container{max-width:1280px;}}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
p{margin:0 0 1em;}
.section{padding:96px 0;}
.section-alt{background:#FFFFFF;}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  line-height:1.6;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.section-head h2{font-size:clamp(24px,2.8vw,36px);line-height:1.28;font-weight:700;}
.section-head .section-sub{font-size:clamp(16px,1.4vw,19px);line-height:1.8;color:var(--ink-2);margin-top:16px;margin-bottom:0;}
.section-head.left{text-align:left;margin-left:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh1);}
.nav-inner{
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,#3C6BE8 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;
  box-shadow:0 4px 12px rgba(31,81,214,.25);
}
.brand-text{font-size:17.5px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;}
.brand-text:hover{color:var(--brand);}
.nav-channels{display:flex;align-items:center;gap:6px;margin-left:8px;}
.channel-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:8px 12px;border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--brand);
  transition:width .2s ease;
}
.channel-link:hover{color:var(--brand);background:#FAFBFE;}
.channel-link:hover::after{width:16px;}
.channel-link.active{color:var(--brand);}
.channel-link.active::after{width:16px;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{
  position:relative;width:210px;height:40px;
}
.nav-search i{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  color:var(--ink-3);font-size:13px;
}
.nav-search input{
  width:100%;height:40px;
  border:1px solid transparent;background:#F5F7FB;
  border-radius:var(--r-btn);
  padding:0 12px 0 34px;
  font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search input:focus{
  outline:none;background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,81,214,.12);
}
.link-login{
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:8px 4px;
}
.link-login:hover{color:var(--brand);}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;
  border:1px solid var(--brand);
  border-radius:999px;
  font-size:15px;font-weight:600;
  padding:10px 22px;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(31,81,214,.25);}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand);
  border:1px solid var(--line-2);
  border-radius:999px;
  font-size:15px;font-weight:600;
  padding:10px 22px;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-outline-brand:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.btn-solid-lg{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;
  padding:13px 28px;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-solid-lg:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,81,214,.22);}
.btn-ghost-lg{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink);border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;
  padding:13px 28px;
  transition:background .2s ease,border-color .2s ease,transform .2s ease,color .2s ease;
}
.btn-ghost-lg:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;color:var(--ink);
  align-items:center;justify-content:center;font-size:17px;
}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-drawer .offcanvas-title{font-size:16px;font-weight:700;}
.drawer-search{position:relative;margin-bottom:20px;}
.drawer-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--ink-3);font-size:13px;}
.drawer-search input{
  width:100%;height:44px;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:0 12px 0 34px;font-size:14px;background:#F9FAFD;
}
.drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,81,214,.12);}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-links a{
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:12px 10px;border-radius:10px;
}
.drawer-links a:hover,.drawer-links a.active{background:var(--brand-soft);color:var(--brand);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:88px 0 72px;
  background-color:#F5F7FB;
  background-image:radial-gradient(rgba(31,81,214,.10) 1px,transparent 1px);
  background-size:22px 22px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(245,247,251,.86) 60%,#F5F7FB 100%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;margin-bottom:22px;
  box-shadow:var(--sh1);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;font-weight:700;
  margin-bottom:22px;
}
.hero .hero-sub{
  font-size:clamp(16px,1.4vw,19px);
  line-height:1.8;color:var(--ink-2);
  max-width:560px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.trust-bar{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;flex-wrap:wrap;gap:24px;
}
.trust-item{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-2);
}
.trust-item i{color:var(--accent);font-size:14px;}
.hero-visual{position:relative;}
.hero-figure{
  border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh2);background:#E9EEF8;
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:-22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh2);
  padding:16px 20px;display:flex;align-items:center;gap:14px;
  max-width:260px;
}
.float-card .fc-icon{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.float-card .fc-num{font-size:19px;font-weight:700;line-height:1.2;}
.float-card .fc-label{font-size:12.5px;color:var(--ink-3);line-height:1.6;}

/* ---------- feature groups ---------- */
.feature-group{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:48px 0;
  border-top:1px solid var(--line);
}
.feature-group:first-of-type{border-top:none;padding-top:0;}
.feature-group.reverse .fg-media{order:2;}
.feature-group.reverse .fg-body{order:1;}
.fg-media{
  border-radius:var(--r-lg);overflow:hidden;background:#E9EEF8;
  box-shadow:var(--sh1);aspect-ratio:4/3;
}
.fg-media img{width:100%;height:100%;object-fit:cover;}
.fg-index{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.fg-body h3{font-size:clamp(18px,1.8vw,22px);line-height:1.4;font-weight:600;margin-bottom:12px;}
.fg-body>p{color:var(--ink-2);font-size:15.5px;margin-bottom:20px;}
.point-list{display:flex;flex-direction:column;gap:14px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;}
.point-list i{color:var(--brand);font-size:15px;margin-top:5px;flex-shrink:0;}
.point-list strong{display:block;font-size:15px;font-weight:600;color:var(--ink);}
.point-list span{display:block;font-size:14px;color:var(--ink-2);line-height:1.7;}

/* ---------- scenes ---------- */
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:40px 0;
}
.scene-row.reverse .scene-media{order:2;}
.scene-row.reverse .scene-body{order:1;}
.scene-media{border-radius:var(--r-lg);overflow:hidden;background:#E9EEF8;box-shadow:var(--sh1);aspect-ratio:16/10;}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-no{
  font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.08em;margin-bottom:10px;display:block;
}
.scene-body h3{font-size:clamp(18px,1.8vw,22px);font-weight:600;line-height:1.4;margin-bottom:12px;}
.scene-body p{color:var(--ink-2);font-size:15.5px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  transition:color .2s ease,transform .2s ease;
}
.text-link:hover{color:var(--brand-dark);transform:translateX(2px);}

/* ---------- cases ---------- */
.case-large{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:#0E1A2B;color:#fff;padding:48px;min-height:320px;
  display:flex;flex-direction:column;justify-content:flex-end;
  box-shadow:var(--sh2);
}
.case-large::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,26,43,.35) 0%,rgba(14,26,43,.92) 78%);
}
.case-large .case-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.case-large .case-content{position:relative;z-index:1;}
.case-large h3{color:#fff;font-size:clamp(20px,2vw,26px);font-weight:700;margin-bottom:10px;}
.case-large p{color:rgba(255,255,255,.72);font-size:14.5px;margin-bottom:24px;max-width:560px;}
.metric-row{display:flex;flex-wrap:wrap;gap:40px;margin-bottom:22px;}
.metric .m-num{font-size:30px;font-weight:700;line-height:1.1;color:#fff;}
.metric .m-label{font-size:12.5px;color:rgba(255,255,255,.68);margin-top:4px;}
.case-quote{font-size:14px;color:rgba(255,255,255,.72);border-left:3px solid var(--highlight);padding-left:14px;}
.case-small{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh1);
  transition:transform .2s ease,box-shadow .2s ease;
  height:100%;
}
.case-small:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.case-small .cs-tag{
  display:inline-block;font-size:12.5px;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:3px 11px;margin-bottom:14px;
}
.case-small h3{font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.case-small p{font-size:14px;color:var(--ink-2);margin-bottom:16px;}
.case-small .cs-metric{font-size:22px;font-weight:700;color:var(--brand);line-height:1.2;}
.case-small .cs-metric span{font-size:12.5px;color:var(--ink-3);font-weight:400;margin-left:6px;}

/* ---------- price ---------- */
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 28px;height:100%;position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);}
.price-card.featured{
  border:1.5px solid var(--brand);
  box-shadow:var(--sh2);
}
.price-card.featured:hover{box-shadow:var(--sh3);}
.price-badge{
  position:absolute;top:-13px;left:28px;
  background:var(--highlight);color:#fff;
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 14px;
}
.price-name{font-size:17px;font-weight:700;margin-bottom:6px;}
.price-desc{font-size:13.5px;color:var(--ink-3);margin-bottom:20px;}
.price-amount{font-size:32px;font-weight:700;color:var(--ink);line-height:1.1;margin-bottom:24px;}
.price-amount small{font-size:13px;color:var(--ink-3);font-weight:400;margin-left:6px;}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);align-items:flex-start;}
.price-list i{color:var(--accent);font-size:14px;margin-top:5px;}
.price-note{font-size:13px;color:var(--ink-3);text-align:center;margin-top:32px;margin-bottom:0;}

/* ---------- info cards ---------- */
.info-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;height:100%;
  box-shadow:var(--sh1);
  transition:transform .2s ease,box-shadow .2s ease;
  color:inherit;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);color:inherit;}
.info-thumb{aspect-ratio:16/9;background:#E9EEF8;overflow:hidden;}
.info-thumb img{width:100%;height:100%;object-fit:cover;}
.info-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.info-badge{
  align-self:flex-start;font-size:12.5px;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:3px 11px;margin-bottom:12px;
}
.info-title{
  font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-desc{
  font-size:14px;color:var(--ink-2);line-height:1.7;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-foot{
  margin-top:auto;border-top:1px solid var(--line);padding-top:14px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);
}
.info-foot .go{color:var(--brand);font-weight:600;}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;
  border:1px dashed var(--line-2);border-radius:var(--r-card);
}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:18px;}

/* ---------- faq ---------- */
.faq-accordion .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-accordion .accordion-item:last-child{margin-bottom:0;}
.faq-accordion .accordion-button{
  background:#fff;color:var(--ink);
  font-size:16px;font-weight:600;line-height:1.55;
  padding:18px 20px;border:none;box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:#fff;color:var(--brand);box-shadow:none;
}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"\f067";
  font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:13px;color:var(--ink-3);
  transition:transform .2s ease,color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"\f068";transform:none;color:var(--brand);
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-accordion .accordion-body{
  font-size:14px;color:var(--ink-2);line-height:1.75;padding:0 20px 20px;
  border-top:1px solid var(--line);padding-top:16px;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--brand);box-shadow:0 4px 16px rgba(31,81,214,.10);
}

/* ---------- cta ---------- */
.cta-band{
  background:#0E1A2B;border-radius:var(--r-xl);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh2);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.btn-invert{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;color:#0E1A2B;border:1px solid #fff;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;padding:13px 26px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-invert:hover{background:#F5F7FB;color:#0E1A2B;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.25);}
.btn-invert-line{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42);border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;padding:13px 26px;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-invert-line:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff;transform:translateY(-1px);}

/* ---------- footer ---------- */
.site-footer{background:#0E1A2B;color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-col p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.60);margin-bottom:0;}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.60);}
.footer-links a:hover{color:#fff;}
.footer-qr{
  width:96px;height:96px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.5);font-size:26px;margin-top:16px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.48);}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav-search{width:170px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:40px;}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px;}
  .section{padding:72px 0;}
  .nav-channels,.nav-search,.link-login,.nav-right .btn-brand{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:64px;}
  .hero{padding:64px 0 56px;}
  .hero-visual{margin-top:48px;}
  .float-card{left:12px;bottom:-18px;}
  .feature-group,.scene-row{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .feature-group.reverse .fg-media,.scene-row.reverse .scene-media{order:0;}
  .feature-group.reverse .fg-body,.scene-row.reverse .scene-body{order:0;}
  .case-large{padding:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .hero h1{font-size:clamp(28px,7vw,36px);}
  .trust-bar{gap:16px;}
  .metric-row{gap:26px;}
  .metric .m-num{font-size:24px;}
  .price-card.featured{transform:none;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .hero{padding:48px 0 44px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-solid-lg,.hero-actions .btn-ghost-lg{width:100%;}
  .float-card{position:static;margin-top:16px;max-width:100%;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions a{width:100%;}
  .case-large{padding:24px;}
  .metric-row{gap:20px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F51D6;
  --c-primary-dark:#173FA8;
  --c-primary-soft:#E8EFFD;
  --c-accent:#0FA98C;
  --c-accent-soft:#E3F6F2;
  --c-highlight:#F2994A;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-dark:#0E1A2B;
  --c-text:#0E1A2B;
  --c-text-2:#43536B;
  --c-text-3:#7A879C;
  --c-border:#E4E9F3;
  --c-border-2:#CFD8EA;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-2xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.04),0 4px 12px rgba(14,26,43,.05);
  --sh-2:0 2px 6px rgba(14,26,43,.05),0 14px 34px rgba(31,81,214,.10);
  --sh-3:0 6px 18px rgba(14,26,43,.08),0 24px 48px rgba(31,81,214,.14);
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --bs-body-font-family:var(--ff);
  --bs-primary:#1F51D6;
  --bs-primary-rgb:31,81,214;
  --bs-link-color:#1F51D6;
  --bs-link-hover-color:#173FA8;
  --bs-border-radius:10px;
  --bs-border-color:#E4E9F3;
  --bs-body-color:#0E1A2B;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4,h5{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--c-text);
}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--c-primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  box-shadow:var(--sh-1);
}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:6px;
}
.channel-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
}
.channel-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transition:width .22s ease;
}
.channel-link:hover{color:var(--c-primary);}
.channel-link:hover::after{width:16px;}
.channel-link.active{color:var(--c-primary);}
.channel-link.active::after{width:16px;}
.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
  margin-left:auto;
  flex-shrink:0;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  width:212px;
  padding:0 14px;
  background:var(--c-bg);
  border:1px solid transparent;
  border-radius:var(--r-sm);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(31,81,214,.10);
}
.nav-search i{color:var(--c-text-3);font-size:13px;}
.nav-search input{
  width:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3);}
.link-login{
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
}
.link-login:hover{color:var(--c-primary);}
.btn-nav-cta{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 20px;
  border-radius:var(--r-pill);
  background:var(--c-primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
}
.btn-nav-cta:hover{
  background:var(--c-primary-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  background:#fff;
  color:var(--c-text-2);
  font-size:16px;
}
.nav-toggle:hover{color:var(--c-primary);border-color:var(--c-primary);}

/* 移动抽屉 */
.offcanvas.ux-drawer{width:320px;border-left:1px solid var(--c-border);}
.ux-drawer .offcanvas-header{
  padding:20px 24px;
  border-bottom:1px solid var(--c-border);
}
.ux-drawer .offcanvas-title{font-size:17px;font-weight:700;}
.ux-drawer .offcanvas-body{padding:20px 24px 32px;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  padding:12px 14px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  margin-bottom:20px;
}
.drawer-search i{color:var(--c-text-3);font-size:13px;}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;}
.drawer-actions .btn-solid,
.drawer-actions .btn-line{width:100%;}

/* ============ 通用按钮 ============ */
.btn-solid,
.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-solid{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.btn-solid:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-line{background:#fff;border-color:var(--c-border-2);color:var(--c-primary);}
.btn-line:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-solid-invert{background:#fff;border-color:#fff;color:var(--c-dark);display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;}
.btn-solid-invert:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-line-invert{background:transparent;border:1px solid rgba(255,255,255,.45);color:#fff;display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;}
.btn-line-invert:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.10);}

/* ============ 徽章 / 标签 ============ */
.badge-cat{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--c-accent-soft);
  color:var(--c-accent);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:0;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-border);
  background:#fff;
  color:var(--c-text-2);
  font-size:13.5px;
}
.tag-chip:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:var(--c-primary-soft);
}

/* ============ 面包屑 ============ */
.crumb-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
}
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  list-style:none;
  padding:14px 0;
  font-size:13.5px;
  color:var(--c-text-3);
  overflow:hidden;
  white-space:nowrap;
}
.crumb li{flex-shrink:0;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-border-2);}
.crumb .current{
  color:var(--c-text-2);
  max-width:44vw;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* ============ 文章头部 ============ */
.article-head{
  background:var(--c-surface);
  padding:44px 0 40px;
}
.article-head-inner{
  max-width:880px;
  margin:0 auto;
}
.article-title{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.25;
  font-weight:700;
  margin-top:18px;
  letter-spacing:-.01em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  margin-top:22px;
  font-size:14px;
  color:var(--c-text-3);
  padding-top:20px;
  border-top:1px solid var(--c-border);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item i{font-size:13px;color:var(--c-text-3);}

/* ============ 封面 ============ */
.article-cover-wrap{
  background:var(--c-surface);
  padding:0 0 40px;
}
.article-cover{
  max-width:880px;
  margin:0 auto;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--c-primary-soft);
  box-shadow:var(--sh-1);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}

/* ============ 正文 ============ */
.article-main{
  padding:48px 0 72px;
}
.article-body-card{
  max-width:880px;
  margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:44px 48px 40px;
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--c-text-2);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.4;
  font-weight:700;
  color:var(--c-text);
  margin:48px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:4px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{
  font-size:19px;
  line-height:1.45;
  font-weight:600;
  color:var(--c-text);
  margin:32px 0 12px;
}
.article-body p{margin:0 0 26px;}
.article-body ul,
.article-body ol{
  margin:0 0 26px;
  padding-left:1.4em;
}
.article-body li{margin-bottom:10px;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-primary);font-weight:600;}
.article-body a{
  color:var(--c-primary);
  border-bottom:1px solid rgba(31,81,214,.35);
}
.article-body a:hover{
  color:var(--c-primary-dark);
  border-bottom-color:var(--c-primary-dark);
}
.article-body blockquote{
  margin:0 0 26px;
  padding:18px 24px;
  background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  margin:32px auto;
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.article-body figure{margin:32px 0;}
.article-body figcaption{
  margin-top:12px;
  text-align:center;
  font-size:13px;
  color:var(--c-text-3);
}
.article-body table{
  width:100%;
  margin:0 0 28px;
  border-collapse:collapse;
  font-size:15px;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  border:1px solid var(--c-border);
  text-align:left;
}
.article-body th{
  background:var(--c-bg);
  color:var(--c-text);
  font-weight:600;
}
.article-body strong{color:var(--c-text);}
.article-body hr{
  border:0;
  border-top:1px solid var(--c-border);
  margin:40px 0;
}

/* 空态 */
.article-empty{
  max-width:880px;
  margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:64px 40px;
  text-align:center;
}
.article-empty i{
  font-size:34px;
  color:var(--c-primary);
  margin-bottom:18px;
  display:inline-block;
}
.article-empty h2{font-size:22px;margin-bottom:12px;}
.article-empty p{
  color:var(--c-text-2);
  font-size:15px;
  max-width:520px;
  margin:0 auto 24px;
}

/* ============ 标签 ============ */
.article-tags{
  max-width:880px;
  margin:32px auto 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.tags-title{
  font-size:13.5px;
  color:var(--c-text-3);
  margin-right:4px;
}

/* ============ 返回入口 ============ */
.article-back{
  max-width:880px;
  margin:36px auto 0;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}

/* ============ 相关推荐 ============ */
.related{
  padding:8px 0 88px;
}
.related-head{
  max-width:880px;
  margin:0 auto 32px;
}
.related-head h2{
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:10px;
}
.related-head p{
  color:var(--c-text-2);
  font-size:15px;
  margin:0;
}
.related-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  grid-template-rows:repeat(2,minmax(0,1fr));
  gap:24px;
  max-width:1120px;
  margin:0 auto;
}
.rel-card{
  display:flex;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  color:var(--c-text);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-3);
  border-color:var(--c-border-2);
  color:var(--c-text);
}
.rel-card-lg{
  flex-direction:column;
  grid-row:1 / span 2;
}
.rel-thumb{
  background:var(--c-primary-soft);
  overflow:hidden;
  flex-shrink:0;
}
.rel-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-card-lg .rel-thumb{aspect-ratio:16/10;}
.rel-card-sm .rel-thumb{width:150px;aspect-ratio:16/11;}
.rel-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.rel-card-sm .rel-body{padding:18px 20px;gap:9px;}
.rel-body h3{
  font-size:18px;
  line-height:1.45;
  font-weight:600;
}
.rel-card-sm .rel-body h3{font-size:16px;}
.rel-body p{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.rel-card:hover .rel-link{color:var(--c-primary-dark);}
.rel-card:hover .rel-link i{transform:translateX(3px);}
.rel-link i{transition:transform .2s ease;font-size:12px;}

/* ============ CTA 条 ============ */
.cta-wrap{padding:0 0 96px;}
.cta-band{
  background:var(--c-dark);
  border-radius:var(--r-2xl);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  box-shadow:var(--sh-2);
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:12px;
}
.cta-band p{
  color:rgba(255,255,255,.72);
  font-size:15px;
  margin:0;
  max-width:560px;
}
.cta-actions{
  display:flex;
  gap:14px;
  flex-shrink:0;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-dark);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--c-primary);}
.footer-brand .brand-text{
  color:#fff;
  font-size:17px;
  font-weight:700;
}
.footer-col p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
  margin:0 0 18px;
  max-width:340px;
}
.footer-qr{
  width:76px;
  height:76px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:28px;
  color:rgba(255,255,255,.55);
}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.92);
  margin-bottom:18px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.66);
}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-search{width:170px;}
  .nav-channels{gap:22px;}
}
@media (max-width:991.98px){
  .nav-search{display:none;}
  .nav-channels{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-inner{height:60px;gap:16px;}
  .link-login{display:none;}
  .related-grid{grid-template-columns:1fr;grid-template-rows:auto;max-width:640px;}
  .rel-card-lg{grid-row:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px;gap:28px;}
  .article-body-card{padding:36px 32px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:64px 0;}
  .site-header{position:sticky;}
  .brand-text{font-size:16px;}
  .btn-nav-cta{height:36px;padding:0 16px;font-size:13px;}
  .article-head{padding:32px 0 28px;}
  .article-cover-wrap{padding-bottom:28px;}
  .article-main{padding:32px 0 56px;}
  .article-body-card{padding:26px 20px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body p{margin-bottom:22px;}
  .article-body h2{margin:36px 0 14px;}
  .crumb .current{max-width:52vw;}
  .article-back .btn-solid,
  .article-back .btn-line{width:100%;}
  .rel-card-sm .rel-thumb{width:112px;}
  .cta-wrap{padding-bottom:64px;}
  .cta-band{border-radius:var(--r-xl);padding:32px;}
  .cta-actions{width:100%;}
  .cta-actions a{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575.98px){
  .article-meta{gap:8px 16px;font-size:13px;}
  .rel-card-sm{flex-direction:column;}
  .rel-card-sm .rel-thumb{width:100%;aspect-ratio:16/9;}
  .article-empty{padding:44px 22px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F51D6;
  --brand-dark:#173FA8;
  --brand-soft:#E8EFFD;
  --accent:#0FA98C;
  --accent-soft:#E3F6F2;
  --highlight:#F2994A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --dark:#0E1A2B;
  --ink:#0E1A2B;
  --ink-2:#43536B;
  --ink-3:#7A879C;
  --line:#E4E9F3;
  --line-strong:#CFD8EA;
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(14,26,43,.04),0 4px 12px rgba(14,26,43,.05);
  --sh-2:0 2px 6px rgba(14,26,43,.05),0 14px 34px rgba(31,81,214,.10);
  --sh-3:0 6px 18px rgba(14,26,43,.08),0 24px 48px rgba(31,81,214,.14);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;
  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-primary:#1F51D6;
  --bs-primary-rgb:31,81,214;
  --bs-border-radius:10px;
  --bs-link-color:#1F51D6;
  --bs-link-hover-color:#173FA8;
  --bs-body-color:#0E1A2B;
  --bs-body-bg:#F5F7FB;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--ink);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(14,26,43,.07);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand:hover .brand-text{color:var(--brand);}
.nav-channels{display:flex;align-items:center;gap:26px;}
.channel-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--brand);border-radius:2px;transform:translateX(-50%);
  transition:width .22s ease;
}
.channel-link:hover{color:var(--brand);}
.channel-link:hover::after{width:16px;}
.channel-link.active{color:var(--brand);font-weight:600;}
.channel-link.active::after{width:16px;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px;}
.nav-search{position:relative;display:block;}
.nav-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--ink-3);}
.nav-search input{
  width:200px;height:40px;border-radius:var(--r-xs);
  border:1px solid var(--line);background:var(--bg);
  padding:0 14px 0 38px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,81,214,.12);}
.link-login{font-size:14px;color:var(--ink-2);font-weight:500;}
.link-login:hover{color:var(--brand);}
.btn-brand{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 20px;
  border-radius:999px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,81,214,.24);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-xs);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  align-items:center;justify-content:center;font-size:15px;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand);}

/* ---------- Buttons ---------- */
.btn-solid,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-xs);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .2s ease;
}
.btn-solid{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-solid:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- Hero ---------- */
.page-hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:56px 0 72px;
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,81,214,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-strong);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;margin-bottom:20px;
}
.hero-badge i{font-size:11px;}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:700;
  margin-bottom:20px;letter-spacing:-.01em;
}
.page-hero h1 .hl{color:var(--brand);}
.hero-lead{font-size:clamp(16px,1.4vw,18px);line-height:1.8;color:var(--ink-2);max-width:560px;margin-bottom:28px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px;}
.anchor-bar{
  display:flex;gap:10px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--line);
}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:13.5px;color:var(--ink-2);font-weight:500;
  transition:all .2s ease;
}
.anchor-bar a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.hero-visual-wrap{position:relative;}
.hero-visual{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-xl);box-shadow:var(--sh-2);background:var(--brand-soft);
}
.hero-float{
  position:absolute;left:-18px;bottom:-18px;
  background:#fff;border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:16px 20px;display:flex;align-items:center;gap:14px;border:1px solid var(--line);
}
.hero-float .num{font-size:26px;font-weight:700;color:var(--brand);line-height:1;}
.hero-float .cap{font-size:12.5px;color:var(--ink-3);line-height:1.5;}

/* ---------- Sections ---------- */
.section{padding:var(--sp-8) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:var(--sp-6);}
.section-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
.section-title{font-size:clamp(24px,2.8vw,34px);line-height:1.28;margin-bottom:14px;}
.section-desc{font-size:16px;color:var(--ink-2);margin:0;}

/* ---------- Feature matrix ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--line-strong);}
.feature-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;margin-bottom:18px;
}
.feature-card h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.feature-card p{font-size:14.5px;color:var(--ink-2);margin-bottom:16px;}
.point-list li{display:flex;gap:9px;font-size:14px;color:var(--ink-2);padding:5px 0;line-height:1.7;}
.point-list i{color:var(--accent);font-size:12px;margin-top:7px;}

/* ---------- Compare table ---------- */
.table-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.table-scroll{overflow-x:auto;}
.compare-table{width:100%;min-width:760px;border-collapse:collapse;}
.compare-table th,.compare-table td{padding:18px 22px;text-align:left;font-size:14.5px;}
.compare-table thead th{
  background:#F0F4FE;color:var(--ink);font-weight:600;font-size:14px;
  border-bottom:1px solid var(--line-strong);white-space:nowrap;
}
.compare-table thead th:first-child{color:var(--ink-2);font-weight:500;}
.compare-table tbody th{
  font-weight:600;color:var(--ink);font-size:14.5px;border-top:1px solid var(--line);
  background:#fff;width:26%;
}
.compare-table tbody td{color:var(--ink-2);border-top:1px solid var(--line);}
.compare-table tbody tr:nth-child(even) th,
.compare-table tbody tr:nth-child(even) td{background:#FAFBFF;}
.compare-table .yes{color:var(--accent);font-weight:600;}
.table-note{font-size:13px;color:var(--ink-3);padding:16px 22px 22px;margin:0;}

/* ---------- Release ---------- */
.release-grid{display:grid;grid-template-columns:0.95fr 1.05fr;gap:48px;align-items:center;}
.release-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--sh-2);background:var(--brand-soft);
}
.release-list{margin-top:8px;}
.release-item{
  display:flex;gap:18px;padding:20px 0;border-bottom:1px dashed var(--line-strong);
}
.release-item:last-child{border-bottom:none;}
.release-date{
  flex-shrink:0;font-size:12.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 12px;height:28px;line-height:18px;
}
.release-item h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.release-item p{font-size:14px;color:var(--ink-2);margin:0;}
.text-link{display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;color:var(--brand);margin-top:22px;transition:transform .2s ease,color .2s ease;}
.text-link:hover{color:var(--brand-dark);transform:translateX(2px);}

/* ---------- Plan cards ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.plan-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.plan-card.featured{border-color:var(--brand);box-shadow:var(--sh-2);position:relative;}
.plan-flag{
  position:absolute;top:-13px;right:22px;background:var(--highlight);color:#fff;
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;
}
.plan-name{font-size:18px;font-weight:700;margin-bottom:6px;}
.plan-users{font-size:13px;color:var(--ink-3);margin-bottom:18px;}
.plan-card .point-list{margin-bottom:22px;}
.plan-card .btn-solid,.plan-card .btn-ghost{width:100%;margin-top:auto;}
.plan-foot{font-size:13px;color:var(--ink-3);margin-top:22px;text-align:center;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;align-items:start;}
.faq-col .accordion-item{margin-bottom:14px;}
.accordion-item{
  background:#fff;border:1px solid var(--line) !important;border-radius:var(--r-sm) !important;
  overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:15.5px;font-weight:600;color:var(--ink);background:#fff;
  padding:17px 20px;box-shadow:none !important;gap:12px;line-height:1.5;
}
.accordion-button:not(.collapsed){color:var(--brand-dark);background:#fff;box-shadow:inset 3px 0 0 var(--brand) !important;}
.accordion-button::after{display:none;}
.faq-mark{
  margin-left:auto;flex-shrink:0;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:11px;color:var(--ink-3);transition:all .2s ease;
}
.accordion-button:not(.collapsed) .faq-mark{background:var(--brand);border-color:var(--brand);color:#fff;}
.accordion-button:not(.collapsed) .faq-mark i{transform:rotate(45deg);}
.faq-mark i{transition:transform .2s ease;}
.accordion-body{padding:0 20px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);border-radius:var(--r-xl);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;flex-wrap:wrap;}
.btn-light{background:#fff;color:var(--dark);}
.btn-light:hover{background:#E8EFFD;color:var(--brand-dark);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:#0E1A2B;color:#fff;padding:64px 0 0;margin-top:var(--sp-8);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:700;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;margin:0 0 18px;max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-links a:hover{color:#fff;}
.footer-qr{
  width:74px;height:74px;border-radius:12px;background:rgba(255,255,255,.08);
  display:grid;place-items:center;font-size:28px;color:rgba(255,255,255,.55);
  border:1px solid rgba(255,255,255,.12);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom span{font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- Offcanvas ---------- */
.offcanvas{--bs-offcanvas-width:320px;}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:20px;}
.mobile-search{position:relative;margin-bottom:20px;}
.mobile-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--ink-3);font-size:13px;}
.mobile-search input{
  width:100%;height:44px;border-radius:var(--r-xs);border:1px solid var(--line);
  background:var(--bg);padding:0 14px 0 38px;font-size:14px;
}
.mobile-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,81,214,.12);}
.mobile-nav-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.mobile-nav-links a{
  font-size:15px;font-weight:500;color:var(--ink-2);padding:12px 14px;border-radius:var(--r-xs);
}
.mobile-nav-links a:hover{background:var(--brand-soft);color:var(--brand);}
.mobile-nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.mobile-actions{display:flex;flex-direction:column;gap:12px;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .nav-channels{gap:20px;}
  .nav-search input{width:160px;}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-channels,.nav-search,.link-login{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;gap:16px;}
  .btn-brand{height:38px;padding:0 16px;font-size:13.5px;}
  .section{padding:72px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:36px 0 56px;}
  .hero-float{left:12px;bottom:-16px;}
  .matrix-grid{grid-template-columns:1fr;}
  .release-grid{grid-template-columns:1fr;gap:32px;}
  .plan-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head{margin-bottom:36px;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .page-hero{padding:28px 0 44px;}
  .hero-btns .btn-solid,.hero-btns .btn-ghost{width:100%;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;width:100%;}
  .feature-card,.plan-card{padding:22px;}
  .cta-band{padding:28px 20px;border-radius:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-solid,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .compare-table th,.compare-table td{padding:14px 16px;}
}

/* roulang page: category2 */
:root{
  --brand:#1F51D6;
  --brand-dark:#173FA8;
  --brand-soft:#E8EFFD;
  --teal:#0FA98C;
  --teal-soft:#E3F6F2;
  --accent:#F2994A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --ink-2:#43536B;
  --ink-3:#7A879C;
  --border:#E4E9F3;
  --border-strong:#CFD8EA;
  --r-btn:10px;
  --r-card:16px;
  --r-card-lg:20px;
  --r-pill:999px;
  --r-band:24px;
  --sh-1:0 1px 2px rgba(14,26,43,.04),0 4px 12px rgba(14,26,43,.05);
  --sh-2:0 2px 6px rgba(14,26,43,.05),0 14px 34px rgba(31,81,214,.10);
  --sh-3:0 6px 18px rgba(14,26,43,.08),0 24px 48px rgba(31,81,214,.14);
  --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;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-primary:#1F51D6;
  --bs-primary-rgb:31,81,214;
  --bs-link-color:#1F51D6;
  --bs-link-hover-color:#173FA8;
  --bs-body-font-family:var(--font-cn);
  --bs-body-color:#0E1A2B;
  --bs-border-radius:10px;
  --bs-border-color:#E4E9F3;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,transform .2s ease}
a:hover{color:var(--brand-dark)}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;padding-left:32px;padding-right:32px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--border);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:var(--sp-5);height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:15px;
  box-shadow:0 4px 12px rgba(31,81,214,.25);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:var(--sp-5);margin:0 auto}
.channel-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 2px;white-space:nowrap;
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:-4px;transform:translateX(-50%) scaleX(0);
  width:16px;height:2px;border-radius:2px;background:var(--brand);
  transition:transform .2s ease;
}
.channel-link:hover{color:var(--brand)}
.channel-link:hover::after{transform:translateX(-50%) scaleX(1)}
.channel-link.active{color:var(--brand);font-weight:600}
.channel-link.active::after{transform:translateX(-50%) scaleX(1)}
.header-actions{display:flex;align-items:center;gap:var(--sp-3);flex:0 0 auto}
.header-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:var(--bg);border:1px solid var(--border);border-radius:var(--r-btn);
  transition:border-color .2s ease,box-shadow .2s ease;width:236px;
}
.header-search i{color:var(--ink-3);font-size:13px}
.header-search input{
  border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);width:100%;
}
.header-search input::placeholder{color:var(--ink-3)}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(31,81,214,.12)}
.btn-text{
  font-size:14px;font-weight:500;color:var(--ink-2);padding:8px 6px;white-space:nowrap;
}
.btn-text:hover{color:var(--brand)}
.btn-brand{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--r-btn);font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(31,81,214,.22)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--border);background:#fff;
  border-radius:var(--r-btn);color:var(--ink-2);font-size:16px;
}
.nav-toggle:hover{border-color:var(--border-strong);color:var(--brand)}

/* ---------- Buttons ---------- */
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;
  border:1px solid var(--border-strong);background:#fff;color:var(--ink-2);
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all .2s ease;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px)}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;
  background:var(--brand);border:1px solid var(--brand);color:#fff;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all .2s ease;
}
.btn-solid:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,81,214,.24)}
.btn-link-arrow{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand)}
.btn-link-arrow i{transition:transform .2s ease}
.btn-link-arrow:hover i{transform:translateX(3px)}

/* ---------- Common ---------- */
.section{padding:96px 0}
.section-sm{padding:72px 0}
.section-head{max-width:760px;margin-bottom:var(--sp-7)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;
  background:var(--brand-soft);color:var(--brand-dark);border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;margin-bottom:var(--sp-4);
}
h1,h2,h3{color:var(--ink);letter-spacing:-.01em;margin:0}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:700}
h2{font-size:clamp(24px,2.8vw,36px);line-height:1.28;font-weight:700}
h3{font-size:clamp(18px,1.8vw,22px);line-height:1.4;font-weight:600}
.lead-text{font-size:clamp(16px,1.4vw,19px);line-height:1.8;color:var(--ink-2);margin:var(--sp-5) 0 0}
.muted{color:var(--ink-3);font-size:14px}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 64px;background:#fff;border-bottom:1px solid var(--border);overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,81,214,.09) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.crumbs{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:0;margin:0 0 var(--sp-5);font-size:13.5px;color:var(--ink-3)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--border-strong)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{color:var(--ink);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8);align-items:center}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-6)}
.hero-trust{
  margin-top:var(--sp-6);padding-top:var(--sp-5);border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:var(--sp-5);
}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2)}
.hero-trust i{color:var(--teal);font-size:13px}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-band);box-shadow:var(--sh-2);background:var(--brand-soft)}
.hero-float{
  position:absolute;left:-20px;bottom:24px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 18px;min-width:170px;
}
.hero-float .num{font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.hero-float .txt{font-size:12.5px;color:var(--ink-3)}

/* ---------- Anchor bar ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:2}
.anchor-inner{display:flex;gap:var(--sp-5);overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  padding:6px 12px;border-radius:var(--r-pill);transition:all .2s ease;
}
.anchor-inner a:hover{background:var(--brand-soft);color:var(--brand-dark)}

/* ---------- Split feature ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8);align-items:center}
.split.reverse .split-media{order:2}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card-lg);box-shadow:var(--sh-2);background:var(--brand-soft)}
.card-panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card-lg);
  padding:var(--sp-6);box-shadow:var(--sh-1);
}
.check-list{list-style:none;padding:0;margin:var(--sp-5) 0 0;display:grid;gap:var(--sp-4)}
.check-list li{display:flex;gap:12px;align-items:flex-start}
.check-list .ic{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  background:var(--teal-soft);color:var(--teal);font-size:12px;margin-top:2px;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--ink)}
.check-list p{margin:2px 0 0;font-size:14px;color:var(--ink-2)}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:var(--sp-7);padding-left:8px}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand-soft),var(--border-strong));border-radius:2px;
}
.tl-item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:var(--sp-5);padding-bottom:var(--sp-7)}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  width:48px;height:48px;border-radius:50%;background:#fff;border:2px solid var(--brand);
  color:var(--brand);font-weight:700;font-size:15px;display:grid;place-items:center;
  position:relative;z-index:1;box-shadow:0 4px 14px rgba(31,81,214,.14);
}
.tl-body{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:var(--sp-5) var(--sp-6);box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.tl-body:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.tl-body h3{margin-bottom:8px}
.tl-body p{margin:0;color:var(--ink-2);font-size:15px}
.tl-meta{display:flex;flex-wrap:wrap;gap:var(--sp-4);margin-top:var(--sp-4);padding-top:var(--sp-4);border-top:1px dashed var(--border)}
.tl-meta span{font-size:13px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px}
.tl-meta i{color:var(--brand)}

/* ---------- Media rows ---------- */
.media-row{display:grid;grid-template-columns:1.05fr 1fr;gap:var(--sp-8);align-items:center}
.media-row+.media-row{margin-top:var(--sp-8)}
.media-row.flip .media-media{order:2}
.media-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card-lg);box-shadow:var(--sh-1);background:var(--brand-soft)}
.media-body .tagline{display:inline-block;font-size:12.5px;font-weight:600;color:var(--teal);background:var(--teal-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:var(--sp-4)}
.media-body p{color:var(--ink-2);margin:var(--sp-4) 0 var(--sp-5)}

/* ---------- Dark band ---------- */
.dark-band{background:var(--ink);border-radius:var(--r-band);padding:var(--sp-8);color:#fff}
.dark-band h2{color:#fff}
.dark-band .lead-text{color:rgba(255,255,255,.72)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-5);margin-top:var(--sp-7)}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:var(--sp-5);
}
.stat .num{font-size:clamp(24px,2.4vw,32px);font-weight:700;color:#fff;line-height:1.15}
.stat .num small{font-size:15px;font-weight:600;color:rgba(255,255,255,.7);margin-left:4px}
.stat .lbl{font-size:13.5px;color:rgba(255,255,255,.7);margin-top:6px}

/* ---------- Accordion ---------- */
.faq-group{margin-bottom:var(--sp-7)}
.faq-group:last-child{margin-bottom:0}
.faq-group-title{
  font-size:15px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:10px;
  margin-bottom:var(--sp-4);
}
.faq-group-title i{color:var(--brand)}
.accordion-item{
  background:#fff;border:1px solid var(--border)!important;border-radius:var(--r-card)!important;
  overflow:hidden;margin-bottom:12px;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--ink);background:#fff;
  padding:18px 22px;border:0!important;box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--brand-dark);background:var(--brand-soft);border-left:3px solid var(--brand)!important}
.accordion-button::after{
  background-image:none!important;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:14px;transform:none!important;color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.accordion-button:not(.collapsed)::after{content:"\f068"}
.accordion-body{padding:16px 22px 22px;font-size:14.5px;color:var(--ink-2);line-height:1.85}

/* ---------- Search widget ---------- */
.quick-search{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card-lg);
  padding:var(--sp-6);box-shadow:var(--sh-1);
}
.quick-search .field{display:flex;gap:12px;margin-top:var(--sp-4);flex-wrap:wrap}
.quick-search input{
  flex:1 1 240px;height:46px;border:1px solid var(--border);border-radius:var(--r-btn);
  padding:0 16px;font-size:14.5px;color:var(--ink);background:var(--bg);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.quick-search input::placeholder{color:var(--ink-3)}
.quick-search input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 2px rgba(31,81,214,.12)}
.hot-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-5)}
.hot-tags a{
  font-size:13px;color:var(--ink-2);background:var(--bg);border:1px solid var(--border);
  padding:6px 12px;border-radius:var(--r-pill);transition:all .2s ease;
}
.hot-tags a:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);border-radius:var(--r-band);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-7);
  flex-wrap:wrap;color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-band p{margin:8px 0 0;color:rgba(255,255,255,.72);font-size:15px;max-width:640px}
.cta-actions{display:flex;gap:var(--sp-3);flex-wrap:wrap}
.btn-white{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;border:1px solid #fff;transition:all .2s ease;
}
.btn-white:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-outline-white{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:transparent;color:#fff;font-size:15px;font-weight:600;
  border:1px solid rgba(255,255,255,.45);transition:all .2s ease;
}
.btn-outline-white:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--sp-7)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:var(--sp-4)}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand .brand-text{color:#fff}
.footer-col p{font-size:14px;line-height:1.85;margin:0;color:rgba(255,255,255,.68)}
.footer-qr{
  margin-top:var(--sp-5);width:74px;height:74px;border-radius:12px;
  border:1px solid rgba(255,255,255,.18);display:grid;place-items:center;
  font-size:26px;color:rgba(255,255,255,.55);background:rgba(255,255,255,.05);
}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:var(--sp-4)}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:var(--sp-8);border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- Offcanvas ---------- */
.offcanvas{background:#fff}
.offcanvas-header{border-bottom:1px solid var(--border);padding:18px 20px}
.offcanvas-title{font-size:16px;font-weight:700}
.offcanvas-body{padding:20px;display:grid;gap:var(--sp-3)}
.offcanvas-body .channel-link{padding:12px 4px;font-size:16px;border-bottom:1px solid var(--border)}
.offcanvas-body .channel-link::after{display:none}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .header-search{width:180px}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:var(--sp-6)}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px}
  .nav-channels,.header-search,.btn-text{display:none}
  .nav-toggle{display:grid;place-items:center}
  .section{padding:72px 0}
  .hero{padding:56px 0 48px}
  .hero-grid,.split,.media-row{grid-template-columns:1fr;gap:var(--sp-6)}
  .split.reverse .split-media,.media-row.flip .media-media{order:0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .header-inner{height:60px}
  .section{padding:56px 0}
  .brand-text{font-size:16px}
  .hero-float{position:static;margin-top:var(--sp-4);min-width:0}
  .tl-item{grid-template-columns:40px 1fr;gap:var(--sp-4)}
  .tl-dot{width:40px;height:40px;font-size:14px}
  .timeline::before{left:19px}
  .stat-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;border-radius:var(--r-card-lg)}
  .cta-actions{width:100%}
  .cta-actions a{flex:1 1 auto;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --brand:#1F51D6;
  --brand-dark:#173FA8;
  --brand-soft:#E8EFFD;
  --accent:#0FA98C;
  --accent-soft:#E3F6F2;
  --highlight:#F2994A;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --ink-2:#43536B;
  --ink-3:#7A879C;
  --line:#E4E9F3;
  --line-strong:#CFD8EA;
  --radius-xs:8px;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --radius-xl:24px;
  --shadow-1:0 1px 2px rgba(14,26,43,.04),0 4px 12px rgba(14,26,43,.05);
  --shadow-2:0 2px 6px rgba(14,26,43,.05),0 14px 34px rgba(31,81,214,.10);
  --shadow-3:0 6px 18px rgba(14,26,43,.08),0 24px 48px rgba(31,81,214,.14);
  --header-h:72px;
  --bs-primary:#1F51D6;
  --bs-body-color:#0E1A2B;
  --bs-border-radius:16px;
  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease}
a:hover{color:var(--brand-dark)}
button,input{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,81,214,.22)}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,81,214,.28)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-soft)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-pill{border-radius:999px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}

.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:12.5px;
  line-height:1.6;
  font-weight:600;
}
.badge-accent{background:var(--accent-soft);color:#0B7A65}
.badge-warm{background:#FDF0E3;color:#B4681F}

.section{padding:96px 0}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.section-title{
  font-size:clamp(24px,2.8vw,36px);
  line-height:1.28;
  font-weight:700;
  margin-bottom:16px;
}
.section-desc{font-size:16px;color:var(--ink-2);line-height:1.8}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14.5px;
}
.text-link i{transition:transform .2s ease}
.text-link:hover{color:var(--brand-dark)}
.text-link:hover i{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,26,43,.07)}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;gap:32px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),#3B72F0);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 6px 14px rgba(31,81,214,.24);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.nav-channels{display:flex;align-items:center;gap:28px;margin-right:auto}
.channel-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;
}
.channel-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--brand);border-radius:2px;transform:translateX(-50%);
  transition:width .22s ease;
}
.channel-link:hover{color:var(--brand)}
.channel-link:hover::after{width:16px}
.channel-link.active{color:var(--brand);font-weight:600}
.channel-link.active::after{width:22px}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;width:230px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search i{color:var(--ink-3);font-size:13px}
.nav-search input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);width:100%;
}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search:focus-within{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,81,214,.14);
}
.link-login{font-size:14.5px;color:var(--ink-2);font-weight:500}
.link-login:hover{color:var(--brand)}
.nav-toggle{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:var(--radius-sm);color:var(--ink);font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* 移动端抽屉 */
.offcanvas.mobile-nav{width:320px;max-width:88vw}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.mobile-nav .offcanvas-body{padding:20px}
.mobile-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.mobile-links a{
  padding:12px 14px;border-radius:var(--radius-sm);font-size:15.5px;font-weight:500;color:var(--ink-2);
}
.mobile-links a:hover{background:var(--bg);color:var(--brand)}
.mobile-links a.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.mobile-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);margin-bottom:16px;
}
.mobile-search input{border:0;background:transparent;outline:none;width:100%;font-size:14.5px}
.mobile-actions{display:flex;flex-direction:column;gap:12px}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  padding:72px 0 64px;
  background:
    linear-gradient(180deg,rgba(245,247,251,.94),rgba(245,247,251,.99)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.18;font-weight:700;margin:18px 0 18px;
}
.cat-hero .lead{
  font-size:clamp(16px,1.4vw,19px);
  line-height:1.8;color:var(--ink-2);max-width:600px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:24px;padding-top:24px;border-top:1px solid var(--line-strong)}
.hero-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.hero-points i{color:var(--accent);font-size:14px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-xl);box-shadow:var(--shadow-2);
  background:var(--brand-soft);
}
.hero-float{
  position:absolute;left:-16px;bottom:-20px;
  background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-2);
  padding:16px 20px;display:flex;align-items:center;gap:14px;
  border:1px solid var(--line);
}
.hero-float .num{font-size:26px;font-weight:700;color:var(--brand);line-height:1}
.hero-float .txt{font-size:13px;color:var(--ink-3);line-height:1.5}
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;
}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  font-size:14px;font-weight:500;color:var(--ink-2);
}
.anchor-bar a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* ---------- 搜索与快捷入口 ---------- */
.help-search-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:32px;margin-top:-44px;position:relative;z-index:2;
}
.help-search{display:flex;gap:12px;flex-wrap:wrap}
.help-search .field{
  flex:1 1 320px;display:flex;align-items:center;gap:10px;
  height:48px;padding:0 16px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:var(--bg);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.help-search .field i{color:var(--ink-3)}
.help-search .field input{border:0;background:transparent;outline:none;width:100%;font-size:15px;color:var(--ink)}
.help-search .field:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,81,214,.14)}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px}
.quick-item{
  display:flex;align-items:center;gap:12px;
  padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:var(--brand-soft)}
.quick-item i{
  width:38px;height:38px;border-radius:var(--radius-xs);
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
}
.quick-item .t{font-size:14.5px;font-weight:600;line-height:1.5}
.quick-item .s{font-size:12.5px;color:var(--ink-3)}

/* ---------- 问答分组 ---------- */
.faq-group{margin-bottom:56px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:24px}
.group-head .icon{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.group-head h3{font-size:clamp(18px,1.8vw,22px);font-weight:600;line-height:1.4}
.group-head p{font-size:13.5px;color:var(--ink-3);margin:4px 0 0}
.faq-col{margin-bottom:14px}
.faq-item{
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-q:hover{color:var(--brand)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--bg);color:var(--ink-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item.is-open .faq-q .sign{background:var(--brand);color:#fff;transform:rotate(180deg)}
.faq-a{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-2)}
.faq-empty{
  display:none;text-align:center;padding:56px 24px;background:#fff;
  border:1px dashed var(--line-strong);border-radius:var(--radius);
}
.faq-empty.show{display:block}
.faq-empty i{font-size:26px;color:var(--ink-3);margin-bottom:12px;display:block}
.faq-empty p{color:var(--ink-3);margin-bottom:16px}

/* ---------- 自助排查时间线 ---------- */
.steps{position:relative;padding-left:0}
.step{
  position:relative;padding-left:56px;padding-bottom:40px;
  border-left:2px dashed var(--line-strong);
  margin-left:19px;
}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step .dot{
  position:absolute;left:-21px;top:0;
  width:40px;height:40px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.step h4{font-size:17px;font-weight:600;margin-bottom:8px;margin-top:6px}
.step p{font-size:14.5px;color:var(--ink-2);margin-bottom:6px}
.step .tip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent);background:var(--accent-soft);
  padding:4px 12px;border-radius:999px;
}
.steps-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow-1);
}
.support-aside{
  background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:32px;
}
.support-aside h3{color:#fff;font-size:20px;margin-bottom:12px}
.support-aside p{color:rgba(255,255,255,.72);font-size:14.5px;margin-bottom:20px}
.support-aside .line{
  display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.86);
  padding:12px 0;border-top:1px solid rgba(255,255,255,.14);
}
.support-aside .line i{color:var(--accent)}

/* ---------- 服务通道卡片 ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.channel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.channel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-soft)}
.channel-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.channel-card h3{font-size:18px;font-weight:600}
.channel-card p{font-size:14px;color:var(--ink-2);flex:1}
.channel-card .meta{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  border-radius:var(--radius-xl);
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px}
.footer-brand .brand-text{color:#fff;font-size:16px}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-qr{
  width:56px;height:56px;border-radius:12px;margin-top:20px;
  border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:rgba(255,255,255,.5);
}
.footer-title{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{max-width:1140px}
  .nav-search{width:190px}
}
@media (max-width:991.98px){
  .container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .cat-hero{padding:56px 0 52px}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual img{aspect-ratio:16/10}
  .hero-float{left:auto;right:12px;bottom:-16px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .channel-grid{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .header-inner{gap:16px}
  .help-search-wrap{padding:24px;margin-top:-32px}
  .quick-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .steps-panel{padding:24px}
  .step{padding-left:46px;margin-left:15px}
  .step .dot{width:32px;height:32px;left:-17px;font-size:12px}
  .cta-band{padding:32px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .anchor-bar a{width:100%;justify-content:center}
  .hero-float{position:static;margin-top:16px;left:auto;right:auto;bottom:auto}
}