/* roulang page: index */
:root{
  --c-primary:#1A5FB4;
  --c-primary-600:#154D93;
  --c-primary-500:#2E79D4;
  --c-primary-050:#EAF2FC;
  --c-accent:#E8791B;
  --c-accent-050:#FFF3E6;
  --c-ink:#0E1B2C;
  --c-body:#46586D;
  --c-muted:#7C8CA0;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FD;
  --c-line:#E5EDF6;
  --c-line-strong:#D3DEEC;
  --c-success:#1E9E6A;
  --c-danger:#D74A3C;
  --sh-1:0 1px 2px rgba(16,42,80,.04);
  --sh-2:0 10px 30px rgba(16,42,80,.06);
  --sh-3:0 18px 48px rgba(16,42,80,.10);
  --r-card:16px;
  --r-card-lg:20px;
  --r-btn:10px;
  --sec:96px;
  --bs-primary:#1A5FB4;
  --bs-primary-rgb:26,95,180;
  --bs-body-color:#46586D;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-border-color:#E5EDF6;
  --bs-border-radius:10px;
  --bs-link-color:#1A5FB4;
  --bs-link-hover-color:#154D93;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-primary-600);}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}
.section{padding:var(--sec) 0;}
.section-soft{background:var(--c-bg-soft);}
.sec-head{max-width:760px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);background:var(--c-primary-050);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.sec-title{font-size:clamp(26px,3vw,38px);line-height:1.3;margin-bottom:16px;}
.sec-lead{font-size:18px;line-height:1.75;color:var(--c-body);}
.divider-line{height:1px;background:var(--c-line);border:0;margin:0;opacity:1;}

/* Buttons */
.btn{--bs-btn-border-radius:10px;border-radius:10px;font-weight:600;padding:12px 24px;font-size:16px;transition:all .24s ease;border-width:1px;}
.btn-primary{--bs-btn-bg:var(--c-primary);--bs-btn-border-color:var(--c-primary);--bs-btn-hover-bg:var(--c-primary-600);--bs-btn-hover-border-color:var(--c-primary-600);--bs-btn-active-bg:var(--c-primary-600);--bs-btn-active-border-color:var(--c-primary-600);box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#cf6a13;border-color:#cf6a13;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline-primary{--bs-btn-color:var(--c-primary);--bs-btn-border-color:var(--c-line-strong);--bs-btn-bg:#fff;--bs-btn-hover-bg:var(--c-primary-050);--bs-btn-hover-border-color:var(--c-primary);--bs-btn-hover-color:var(--c-primary);--bs-btn-active-bg:var(--c-primary-050);}
.btn-sm{padding:9px 18px;font-size:14.5px;}
.btn:focus-visible,.nav-link:focus-visible,.icon-btn:focus-visible,a:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.text-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--c-primary);}
.text-link i{transition:transform .24s ease;}
.text-link:hover i{transform:translateX(4px);}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:72px;display:flex;align-items:center;
  background:rgba(255,255,255,.62);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(15,40,80,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.6);
  transition:background .28s ease,box-shadow .28s ease,height .28s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.97);backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:var(--sh-2);}
.header-inner{display:flex;align-items:center;gap:24px;width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-500) 100%);
  color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:17.5px;font-weight:700;color:var(--c-ink);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.main-nav .nav-link{
  position:relative;padding:10px 14px;font-size:15.5px;font-weight:500;color:var(--c-ink);
  border-radius:8px;transition:color .22s ease;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .26s ease;border-radius:2px;
}
.main-nav .nav-link:hover{color:var(--c-primary);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.is-active{color:var(--c-primary);font-weight:600;}
.main-nav .nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);display:flex;align-items:center;justify-content:center;
  transition:all .22s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);}
.search-input{
  width:0;opacity:0;padding:0;border:1px solid var(--c-line-strong);border-radius:10px;height:40px;
  transition:width .26s ease,opacity .26s ease,padding .26s ease;background:#fff;
}
.search-box.is-open .search-input{width:220px;opacity:1;padding:0 12px;}
.search-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,95,180,.12);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);}
.offcanvas{--bs-offcanvas-width:300px;}
.offcanvas .nav-link{display:block;font-size:17px;line-height:56px;color:var(--c-ink);border-bottom:1px solid var(--c-line);padding:0;font-weight:500;}
.offcanvas .nav-link.is-active{color:var(--c-primary);font-weight:600;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:calc(72px + 72px) 0 88px;
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 68%);
}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,95,180,.10) 0%,rgba(26,95,180,0) 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);
  border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:600;color:var(--c-primary);box-shadow:var(--sh-1);margin-bottom:22px;
}
.hero h1{font-size:clamp(32px,4.4vw,54px);line-height:1.24;font-weight:700;letter-spacing:-.01em;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{font-size:19px;line-height:1.7;color:var(--c-body);max-width:600px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);font-weight:500;}
.hero-trust i{color:var(--c-primary);font-size:14px;}
.hero-visual{position:relative;}
.hero-visual::after{
  content:"";position:absolute;inset:-14px;border-radius:26px;border:1px solid rgba(26,95,180,.14);
}
.hero-visual img{
  position:relative;z-index:1;width:100%;aspect-ratio:16/12;object-fit:cover;
  border-radius:var(--r-card-lg);box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;z-index:2;left:-22px;bottom:26px;background:#fff;border:1px solid var(--c-line);
  border-radius:14px;padding:14px 18px;box-shadow:var(--sh-3);min-width:190px;
}
.hero-float strong{display:block;font-size:24px;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-float span{font-size:13px;color:var(--c-muted);}

/* Stats */
.stats-bar{border-bottom:1px solid var(--c-line);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:44px 0;}
.stat-item{text-align:left;padding-right:16px;border-right:1px solid var(--c-line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:clamp(30px,3.4vw,40px);font-weight:700;color:var(--c-primary);line-height:1.15;font-variant-numeric:tabular-nums;}
.stat-desc{font-size:14px;color:var(--c-muted);margin-top:6px;}

/* Value */
.value-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;}
.value-list{display:flex;flex-direction:column;gap:32px;}
.value-item{display:flex;gap:18px;padding-bottom:28px;border-bottom:1px solid var(--c-line);}
.value-item:last-child{border-bottom:0;padding-bottom:0;}
.value-icon{
  width:46px;height:46px;flex-shrink:0;border-radius:12px;background:var(--c-primary-050);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;
}
.value-item h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.value-item p{font-size:15.5px;color:var(--c-body);}

/* Feature alternating */
.feature-row{display:grid;gap:56px;align-items:center;padding:56px 0;border-bottom:1px solid var(--c-line);}
.feature-row:last-child{border-bottom:0;}
.feature-row.flip{grid-template-columns:7fr 5fr;}
.feature-row.normal{grid-template-columns:5fr 7fr;}
.feature-row.normal .feature-text{order:1;}
.feature-row.normal .feature-media{order:2;}
.feature-row.flip .feature-media{order:1;}
.feature-row.flip .feature-text{order:2;}
.feature-index{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--c-accent);margin-bottom:12px;}
.feature-text h3{font-size:clamp(21px,2.2vw,25px);margin-bottom:14px;line-height:1.4;}
.feature-text > p{font-size:16px;color:var(--c-body);margin-bottom:22px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;}
.check-list li{display:flex;gap:10px;font-size:15.5px;color:var(--c-body);line-height:1.7;}
.check-list i{color:var(--c-success);font-size:15px;margin-top:6px;}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card-lg);box-shadow:var(--sh-2);}

/* Scenario rail */
.rail{
  display:flex;gap:24px;overflow-x:auto;padding:8px 4px 28px;scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--c-line-strong);border-radius:999px;}
.rail-card{
  position:relative;flex:0 0 340px;scroll-snap-align:start;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);background:#fff;transition:all .28s ease;
}
.rail-card.tall{margin-top:24px;}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3);}
.rail-card img{width:100%;height:290px;object-fit:cover;}
.rail-card .rail-cap{
  position:absolute;left:12px;right:12px;bottom:12px;background:rgba(255,255,255,.9);
  border-radius:12px;padding:14px 16px;backdrop-filter:blur(4px);
}
.rail-cap h3{font-size:16.5px;font-weight:600;margin-bottom:4px;}
.rail-cap p{font-size:13.5px;color:var(--c-muted);margin:0;}

/* Cases */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.case-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:all .28s ease;display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3);}
.case-card img{width:100%;object-fit:cover;}
.case-card.big img{aspect-ratio:16/9;}
.case-small img{aspect-ratio:16/10;}
.case-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-tag{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-050);border-radius:999px;padding:4px 12px;
}
.case-body h3{font-size:19px;line-height:1.45;}
.case-body p{font-size:15px;color:var(--c-body);}
.case-metrics{display:flex;gap:36px;padding-top:8px;border-top:1px solid var(--c-line);margin-top:auto;}
.case-metrics strong{display:block;font-size:26px;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.case-metrics span{font-size:13px;color:var(--c-muted);}
.case-side{display:flex;flex-direction:column;gap:24px;}

/* Price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px 28px;
  box-shadow:var(--sh-1);transition:all .28s ease;position:relative;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.price-card.featured{border:2px solid var(--c-primary);transform:translateY(-12px);box-shadow:var(--sh-3);}
.price-card.featured:hover{transform:translateY(-16px);}
.price-badge{
  position:absolute;top:-14px;right:24px;background:var(--c-accent-050);color:var(--c-accent);
  font-size:12.5px;font-weight:700;border-radius:999px;padding:5px 14px;border:1px solid rgba(232,121,27,.24);
}
.price-name{font-size:18px;font-weight:600;margin-bottom:6px;}
.price-note{font-size:13.5px;color:var(--c-muted);margin-bottom:20px;}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-bottom:24px;}
.price-amount strong{font-size:42px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1;}
.price-amount span{font-size:14px;color:var(--c-muted);}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;padding-top:22px;border-top:1px solid var(--c-line);}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--c-body);}
.price-list li i{color:var(--c-success);margin-top:6px;font-size:14px;}
.price-list li.off{color:var(--c-muted);}
.price-list li.off i{color:var(--c-line-strong);}
.price-card .btn{width:100%;}
.price-foot{font-size:14px;color:var(--c-muted);text-align:center;margin-top:28px;}

/* CMS list */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.cms-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.cms-feature{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:all .28s ease;display:flex;flex-direction:column;
}
.cms-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3);}
.cms-feature .thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-primary-050);}
.cms-feature .cms-body{padding:26px;display:flex;flex-direction:column;gap:12px;}
.cms-feature h3{font-size:22px;line-height:1.45;}
.cms-feature p{font-size:15.5px;color:var(--c-body);}
.cms-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted);}
.chip{
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-050);border-radius:999px;padding:4px 12px;
}
.chip-neutral{background:#F1F4F8;color:var(--c-muted);}
.cms-list{display:flex;flex-direction:column;gap:14px;}
.cms-row{
  display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--c-line);
  border-radius:14px;padding:16px;box-shadow:var(--sh-1);transition:all .26s ease;
}
.cms-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3);}
.cms-row .thumb-sm{
  width:110px;height:74px;flex-shrink:0;border-radius:10px;object-fit:cover;background:var(--c-primary-050);
}
.cms-row h3{font-size:16px;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-row .cms-meta{font-size:12.5px;}
.cms-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  min-height:220px;background:var(--c-bg-soft);border-radius:var(--r-card);border:1px dashed var(--c-line-strong);
  color:var(--c-muted);font-size:14px;text-align:center;
}
.cms-empty i{font-size:26px;color:var(--c-line-strong);}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px !important;margin-bottom:14px;overflow:hidden;
  box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--c-ink);padding:18px 24px;background:#fff;line-height:1.6;
}
.accordion-button:not(.collapsed){background:#fff;color:var(--c-primary);box-shadow:none;border-bottom:1px solid rgba(26,95,180,.28);}
.accordion-button:focus{box-shadow:none;border-color:var(--c-line);}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;
  color:var(--c-primary);width:auto;height:auto;transition:transform .26s ease;transform:none;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{padding:18px 24px 24px;font-size:15.5px;color:var(--c-body);line-height:1.85;}

/* CTA */
.cta-band{
  background:var(--c-primary-050);border-radius:24px;padding:56px;display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:center;
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:16px;}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-top:22px;}
.cta-points li{display:flex;gap:10px;font-size:15.5px;color:var(--c-body);}
.cta-points i{color:var(--c-primary);margin-top:6px;font-size:14px;}
.cta-form{background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:28px;box-shadow:var(--sh-2);}
.form-label{font-size:13.5px;font-weight:500;color:var(--c-ink);margin-bottom:6px;}
.form-control{
  height:46px;border-radius:10px;border:1px solid var(--c-line-strong);font-size:15px;padding:0 14px;color:var(--c-ink);
}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;}
.form-control:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,95,180,.12);}
.form-note{font-size:12.5px;color:var(--c-muted);margin-top:12px;}
.form-alert{display:none;font-size:13.5px;border-radius:10px;padding:10px 14px;margin-bottom:14px;}
.form-alert.ok{display:block;background:rgba(30,158,106,.1);color:var(--c-success);border:1px solid rgba(30,158,106,.25);}
.form-alert.err{display:block;background:rgba(215,74,60,.08);color:var(--c-danger);border:1px solid rgba(215,74,60,.24);}

/* Footer */
.site-footer{background:#0B1626;color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand span{color:#fff;font-weight:700;font-size:17px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-title{font-size:14.5px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .22s ease;}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68);display:flex;gap:10px;margin-bottom:11px;}
.footer-contact i{color:var(--c-primary-500);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* Back to top */
#backTop{
  position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;border:0;
  background:rgba(26,95,180,.1);color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:all .28s ease;z-index:1030;
}
#backTop.show{opacity:1;visibility:visible;}
#backTop:hover{background:var(--c-primary);color:#fff;}

@media (max-width:1199px){
  :root{--sec:80px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero{padding-top:calc(72px + 48px);}
  .value-grid{grid-template-columns:1fr;gap:36px;}
  .cms-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:44px;}
  .cta-form{max-width:520px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .main-nav{display:none;}
  .menu-toggle{display:flex;align-items:center;justify-content:center;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .stat-item:nth-child(2){border-right:0;}
  .feature-row.flip,.feature-row.normal{grid-template-columns:1fr;}
  .feature-row.flip .feature-media,.feature-row.normal .feature-media{order:1;}
  .feature-row.flip .feature-text,.feature-row.normal .feature-text{order:2;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
  .hero-visual::after{inset:-10px;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  body{font-size:16px;}
  .section{padding:var(--sec) 0;}
  .hero h1{font-size:clamp(27px,7vw,34px);}
  .hero-lead{font-size:17px;}
  .hero-actions .btn{width:100%;}
  .hero-float{left:12px;bottom:12px;padding:12px 14px;min-width:160px;}
  .stats-grid{grid-template-columns:1fr;gap:22px;}
  .stat-item{border-right:0;border-bottom:1px solid var(--c-line);padding-bottom:18px;}
  .stat-item:last-child{border-bottom:0;padding-bottom:0;}
  .cms-row{flex-direction:row;}
  .cms-row .thumb-sm{width:88px;height:66px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:30px 22px;}
  .rail-card{flex:0 0 84%;}
  .rail-card.tall{margin-top:0;}
  .case-metrics{gap:24px;}
  #backTop{right:16px;bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(255,255,255,.96);}
}

/* roulang page: article */
:root{
  --c-primary:#1A5FB4;
  --c-primary-600:#154D93;
  --c-primary-500:#2E79D4;
  --c-primary-050:#EAF2FC;
  --c-accent:#E8791B;
  --c-accent-050:#FFF3E6;
  --c-ink:#0E1B2C;
  --c-body:#46586D;
  --c-muted:#7C8CA0;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FD;
  --c-line:#E5EDF6;
  --c-line-strong:#D3DEEC;
  --c-success:#1E9E6A;
  --c-danger:#D74A3C;
  --r-card:16px;
  --r-card-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.04);
  --sh-2:0 10px 30px rgba(16,42,80,.06);
  --sh-3:0 18px 48px rgba(16,42,80,.10);
  --nav-h:72px;
  --sec:96px;
  --bs-primary:#1A5FB4;
  --bs-body-color:#46586D;
  --bs-border-color:#E5EDF6;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  font-feature-settings:"tnum";
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .24s ease,border-color .24s ease;}
a:hover{color:var(--c-primary-600);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);font-weight:700;margin:0;}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.24;letter-spacing:-.01em;}
h2{font-size:clamp(26px,3vw,38px);line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(15,40,80,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.6);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.is-stuck{background:#FFFFFF;box-shadow:var(--sh-2);border-bottom-color:var(--c-line);}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary-500),var(--c-primary-600));
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 14px;font-size:15.5px;font-weight:500;color:var(--c-ink);
  border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line-strong);
  background:#fff;color:var(--c-ink);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:.24s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-500);background:var(--c-primary-050);}
.search-wrap{display:flex;align-items:center;}
.search-input{
  width:0;opacity:0;padding:0;border:1px solid var(--c-line-strong);border-radius:10px;
  height:40px;font-size:14px;color:var(--c-ink);background:#fff;
  transition:width .28s ease,opacity .28s ease,padding .28s ease;
}
.search-wrap.is-open .search-input{width:220px;opacity:1;padding:0 12px;margin-left:8px;}
.search-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,95,180,.12);}
.nav-toggle{display:none;}
.mobile-drawer{
  position:fixed;top:0;right:0;width:82%;max-width:340px;height:100%;
  background:#fff;z-index:1060;transform:translateX(100%);
  transition:transform .28s ease;padding:24px;box-shadow:var(--sh-3);
  display:flex;flex-direction:column;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line-strong);background:#fff;color:var(--c-ink);cursor:pointer;}
.drawer-links a{
  display:block;font-size:17px;line-height:56px;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);font-weight:500;
}
.drawer-links a.is-active{color:var(--c-primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:24px;}
.backdrop{
  position:fixed;inset:0;background:rgba(14,27,44,.42);z-index:1055;
  opacity:0;visibility:hidden;transition:.28s ease;
}
.backdrop.is-open{opacity:1;visibility:visible;}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;gap:12px;}
  .brand-text{font-size:15.5px;}
}
@media (max-width:575px){
  .brand-text{font-size:14.5px;max-width:170px;overflow:hidden;text-overflow:ellipsis;}
  .header-actions .btn-primary{display:none;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.24s ease;line-height:1.2;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-primary:hover{background:var(--c-primary-600);border-color:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line-strong);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary-500);color:var(--c-primary-600);}
.btn-sm{padding:9px 16px;font-size:14.5px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-primary);}
.link-arrow i{transition:transform .24s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 页头 ============ */
.page-head{
  background:var(--c-bg-soft);
  padding:calc(var(--nav-h) + 56px) 0 40px;
  border-bottom:1px solid var(--c-line);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{color:var(--c-line-strong);}
.crumb .current{color:var(--c-ink);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-050);color:var(--c-primary);
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
}
.chip-accent{background:var(--c-accent-050);color:var(--c-accent);}
.chip-plain{background:#F0F3F7;color:var(--c-muted);}
.article-h1{max-width:900px;margin:18px 0 20px;font-size:clamp(28px,3.6vw,46px);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:20px;font-size:13.5px;color:var(--c-muted);}
.article-meta i{color:var(--c-primary-500);margin-right:6px;}

/* ============ 文章主体 ============ */
.main-wrap{padding:56px 0 var(--sec);}
.cover-figure{margin:0 0 48px;}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--sh-2);border:1px solid var(--c-line);
}
.cover-figure figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:12px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-body);word-wrap:break-word;overflow-wrap:break-word;}
.article-body>*+*{margin-top:1.4em;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.3vw,28px);line-height:1.4;
  padding-left:16px;margin-top:48px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:20px;margin-top:32px;color:var(--c-ink);}
.article-body h4{font-size:17px;margin-top:24px;color:var(--c-ink);}
.article-body p{margin:0;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(26,95,180,.28);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body blockquote{
  margin:28px 0;padding:16px 20px;background:var(--c-primary-050);
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;
  color:var(--c-ink);font-size:16.5px;
}
.article-body ul,.article-body ol{padding-left:22px;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;padding-left:4px;}
.article-body img{border-radius:12px;margin:24px auto;max-width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
  font-size:15.5px;margin:24px 0;max-width:100%;display:block;overflow-x:auto;
}
.article-body thead th{background:var(--c-bg-soft);color:var(--c-ink);font-weight:600;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line);text-align:left;white-space:nowrap;}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:36px 0;}
.article-body code{background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14.5px;color:var(--c-primary-600);}

/* 空态 */
.empty-state{
  background:var(--c-bg-soft);border:1px dashed var(--c-line-strong);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;max-width:760px;
}
.empty-state i{font-size:34px;color:var(--c-primary-500);margin-bottom:16px;display:block;}
.empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:18px;}

/* 侧栏 */
.side-col{position:sticky;top:104px;display:flex;flex-direction:column;gap:24px;}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-title{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:4px;height:16px;background:var(--c-primary);border-radius:2px;}
.side-list li+li{margin-top:16px;padding-top:16px;border-top:1px solid var(--c-line);}
.side-list a{display:block;}
.side-list .side-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;margin-bottom:10px;border:1px solid var(--c-line);}
.side-list .side-name{font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-list a:hover .side-name{color:var(--c-primary);}
.side-list .side-date{font-size:12.5px;color:var(--c-muted);margin-top:6px;}
.side-card .btn{width:100%;}

/* 文章尾 */
.article-tail{margin-top:48px;padding-top:32px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:32px;}
.tag-row .tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:#F0F3F7;color:var(--c-body);font-size:13px;transition:.24s ease;
}
.tag-row .tag:hover{background:var(--c-primary-050);color:var(--c-primary);}
.tail-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 相关推荐 */
.related{padding-top:8px;}
.related h2{font-size:24px;margin-bottom:8px;}
.related-sub{font-size:14.5px;color:var(--c-muted);margin-bottom:28px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rcard{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:.26s ease;display:flex;flex-direction:column;
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3);}
.rcard img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rcard-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rcard-title{font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rcard:hover .rcard-title{color:var(--c-primary);}
.rcard-meta{font-size:12.5px;color:var(--c-muted);margin-top:auto;}

/* CTA 条 */
.cta-band{
  background:var(--c-primary-050);border-radius:var(--r-card-lg);
  padding:44px;margin-top:64px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px;}
.cta-band p{font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:rgba(26,95,180,.08);color:var(--c-primary);border:1px solid rgba(26,95,180,.18);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.28s ease;z-index:1030;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ============ 页脚 ============ */
.site-footer{background:#0E1B2C;color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-weight:700;font-size:17px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--c-primary-500),var(--c-primary-600));}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:11px;display:flex;align-items:flex-start;gap:9px;}
.footer-contact i{color:var(--c-primary-500);margin-top:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .page-head{padding-top:calc(60px + 40px);}
  .article-layout{grid-template-columns:1fr;gap:40px;}
  .side-col{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:32px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  body{font-size:16px;}
  .main-wrap{padding:36px 0 var(--sec);}
  .article-body{font-size:16.5px;line-height:1.88;}
  .article-body h2{margin-top:36px;}
  .article-body h3{margin-top:26px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px;}
  h1{font-size:30px;}
  .article-h1{font-size:26px;}
  .article-meta{gap:12px;font-size:13px;}
  .article-body table{font-size:14.5px;}
  .tail-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .site-header{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(255,255,255,.96);}
}

/* roulang page: category1 */
:root{
  --c-primary:#1A5FB4;
  --c-primary-600:#154D93;
  --c-primary-500:#2E79D4;
  --c-primary-050:#EAF2FC;
  --c-accent:#E8791B;
  --c-accent-050:#FFF3E6;
  --c-ink:#0E1B2C;
  --c-body:#46586D;
  --c-muted:#7C8CA0;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FD;
  --c-line:#E5EDF6;
  --c-line-strong:#D3DEEC;
  --c-success:#1E9E6A;
  --c-error:#D74A3C;
  --r-card:16px;
  --r-img:20px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(16,42,80,.04);
  --sh-2:0 10px 30px rgba(16,42,80,.06);
  --sh-3:0 18px 48px rgba(16,42,80,.10);
  --sec-py:96px;
  --nav-h:72px;
  --bs-primary:#1A5FB4;
  --bs-body-color:#46586D;
  --bs-border-color:#E5EDF6;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:150px}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 1;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .24s ease}
a:hover{color:var(--c-primary-600)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.24;letter-spacing:-.01em}
h2{font-size:clamp(26px,3vw,38px);line-height:1.3}
h3{font-size:clamp(20px,2vw,24px);line-height:1.4;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1320px}}

/* ============ 导航 ============ */
.main-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:var(--nav-h);
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(15,40,80,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.6);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.main-header.is-stuck{
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:none;backdrop-filter:none;
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;letter-spacing:-.02em;
  box-shadow:var(--sh-1);
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.brand-text .brand-short{display:none}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:12px;flex:1}
.nav-link{
  position:relative;
  font-size:15.5px;font-weight:500;color:var(--c-ink);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);border-radius:2px;transition:width .26s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-wrap{position:relative;display:flex;align-items:center}
.search-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid transparent;
  background:transparent;color:var(--c-ink);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  transition:background .24s ease,color .24s ease,border-color .24s ease;
}
.search-toggle:hover{background:var(--c-primary-050);color:var(--c-primary);border-color:var(--c-line)}
.search-field{
  width:0;opacity:0;pointer-events:none;
  height:40px;border-radius:var(--r-input);border:1px solid var(--c-line-strong);
  padding:0;font-size:14px;color:var(--c-ink);background:#fff;
  transition:width .28s ease,opacity .28s ease,padding .28s ease;
}
.search-wrap.is-open .search-field{width:220px;opacity:1;pointer-events:auto;padding:0 12px}
.search-field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,95,180,.12)}
.btn-mk{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--c-primary);color:#fff;font-weight:600;font-size:15px;
  cursor:pointer;transition:background .24s ease,transform .24s ease,box-shadow .24s ease;
}
.btn-mk:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-mk:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-mk-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  border:1px solid var(--c-line-strong);background:#fff;color:var(--c-primary);
  font-weight:600;font-size:15px;cursor:pointer;
  transition:background .24s ease,border-color .24s ease,transform .24s ease;
}
.btn-mk-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600);transform:translateY(-1px)}
.btn-mk-sm{padding:9px 18px;font-size:14px}
.hamburger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);display:none;align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;
}
.offcanvas.mk-drawer{background:#fff;background-image:none;width:300px}
.mk-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 22px}
.mk-drawer .offcanvas-body{padding:0;display:flex;flex-direction:column;height:100%}
.drawer-links{flex:1;padding:8px 0}
.drawer-links a{
  display:block;font-size:17px;line-height:56px;padding:0 22px;color:var(--c-ink);font-weight:500;
  border-bottom:1px solid var(--c-line);
}
.drawer-links a.is-active{color:var(--c-primary);background:var(--c-primary-050)}
.drawer-cta{padding:18px 22px 26px}
.drawer-cta .btn-mk{width:100%}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-bg-soft);border-bottom:1px solid var(--c-line);padding-top:calc(var(--nav-h) + 16px)}
.crumb{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-bottom:14px}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-line-strong)}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ============ 页头横幅 ============ */
.hero-band{
  background:linear-gradient(180deg,var(--c-primary-050) 0%,#F4F9FE 62%,var(--c-bg-soft) 100%);
  border-bottom:1px solid var(--c-line);
  padding:36px 0 60px;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 40%;gap:48px;align-items:center}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-line-strong);color:var(--c-primary);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-band h1{margin-bottom:18px}
.hero-band h1 .hl{color:var(--c-primary)}
.hero-lead{font-size:19px;line-height:1.7;color:var(--c-body);max-width:620px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-bottom:28px;font-size:14px;color:var(--c-body)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points i{color:var(--c-primary);font-size:13px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{position:relative}
.hero-figure img{border-radius:var(--r-img);box-shadow:var(--sh-2);width:100%;object-fit:cover;aspect-ratio:16/11}
.hero-figure::after{
  content:"";position:absolute;inset:-12px;border:1px solid rgba(26,95,180,.18);
  border-radius:24px;pointer-events:none;
}

/* ============ 锚点导航 ============ */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:20;
  background:#fff;border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.anchor-inner{display:flex;gap:34px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  position:relative;padding:17px 0;font-size:15px;font-weight:500;color:var(--c-body);
  white-space:nowrap;
}
.anchor-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;
  transition:background .24s ease;
}
.anchor-link:hover{color:var(--c-primary)}
.anchor-link.is-active{color:var(--c-primary);font-weight:600}
.anchor-link.is-active::after{background:var(--c-primary)}

/* ============ 通用区块 ============ */
.section{padding:var(--sec-py) 0}
.section-soft{background:var(--c-bg-soft)}
.section-line{border-top:1px solid var(--c-line)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head-row h2{margin-bottom:8px}
.sec-sub{font-size:16px;color:var(--c-body);max-width:640px}
.split{display:grid;grid-template-columns:minmax(200px,4fr) minmax(0,8fr);gap:44px}
.split + .split{margin-top:56px;padding-top:56px;border-top:1px solid var(--c-line)}
.sec-num{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;margin-bottom:14px;
}
.sec-num::after{content:"";width:26px;height:1px;background:var(--c-line-strong)}
.split h2{font-size:clamp(22px,2.2vw,30px);margin-bottom:12px}
.split h3{font-size:18px;margin-bottom:8px}
.split .side-note{font-size:14px;color:var(--c-muted);line-height:1.8}
.body-copy p{font-size:16.5px;line-height:1.9;margin-bottom:1.3em}
.feature-list{display:grid;gap:12px;margin:22px 0 24px}
.feature-list li{display:flex;gap:12px;font-size:16px;color:var(--c-body);line-height:1.75}
.feature-list i{color:var(--c-primary);font-size:14px;margin-top:7px;flex-shrink:0}
.figure-inline{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--c-line);margin:24px 0 8px}
.figure-inline img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-cap{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}
.tag{
  display:inline-block;font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
  background:var(--c-primary-050);color:var(--c-primary);
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px}
.link-arrow i{transition:transform .24s ease}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 表格 ============ */
.table-shell{
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-1);
}
.table-scroll{overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse;min-width:680px;font-size:15px}
table.data-table thead th{
  background:var(--c-bg-soft);color:var(--c-ink);font-weight:600;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--c-line-strong);white-space:nowrap;
}
table.data-table tbody td{padding:15px 20px;border-bottom:1px solid var(--c-line);color:var(--c-body)}
table.data-table tbody tr:last-child td{border-bottom:none}
table.data-table tbody tr:nth-child(even){background:#FBFDFF}
table.data-table tbody td:first-child{color:var(--c-ink);font-weight:600}
.table-note{font-size:13px;color:var(--c-muted);margin-top:14px}

/* ============ 数据条 ============ */
.metric-strip{background:var(--c-bg-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:56px 0}
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.metric-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);text-align:center;
}
.metric-num{font-size:clamp(32px,4vw,40px);font-weight:700;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.metric-num span{font-size:18px;font-weight:600;margin-left:2px}
.metric-label{font-size:14px;color:var(--c-muted);margin-top:8px}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{
  border:1px solid var(--c-line);border-radius:14px;background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  width:100%;background:#fff;border:none;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);
  padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  box-shadow:none;transition:color .24s ease;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;box-shadow:none}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(26,95,180,.12);border-color:var(--c-primary);z-index:1}
.accordion-button::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);
  transition:transform .28s ease;flex-shrink:0;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{padding:0 24px 22px;font-size:16px;line-height:1.9;color:var(--c-body);border-top:1px solid rgba(26,95,180,.18);margin-top:0;padding-top:18px}
.accordion-collapse{border:none}

/* ============ CTA 条 ============ */
.cta-band{background:var(--c-primary-050);border-top:1px solid var(--c-line);padding:64px 0}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-inner p{font-size:16px;color:var(--c-body);margin-bottom:12px}
.cta-list{display:grid;gap:8px;font-size:15px}
.cta-list li{display:flex;align-items:center;gap:10px}
.cta-list i{color:var(--c-primary);font-size:13px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:#0E1B2C;color:rgba(255,255,255,.72);padding:72px 0 28px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:16px}
.site-footer .brand-mark{background:#1A5FB4;color:#fff}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0}
.footer-title{color:#fff;font-weight:600;font-size:16px;margin-bottom:18px}
.footer-links{display:grid;gap:12px}
.footer-links a{color:rgba(255,255,255,.66);font-size:14.5px}
.footer-links a:hover{color:#fff}
.footer-contact{display:grid;gap:12px;font-size:14.5px;color:rgba(255,255,255,.66)}
.footer-contact i{color:var(--c-primary-500);width:18px;margin-right:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:12.5px;color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ============ 返回顶部 ============ */
#backTop{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--c-line);background:rgba(26,95,180,.08);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background .24s ease;
  z-index:1020;font-size:16px;
}
#backTop.is-show{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{background:rgba(26,95,180,.16)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .main-nav{gap:20px}
  .nav-link{font-size:15px}
}
@media (max-width:991px){
  :root{--sec-py:72px}
  .main-nav{display:none}
  .hamburger{display:flex}
  .nav-inner{gap:14px;justify-content:space-between}
  .brand-text .brand-full{display:none}
  .brand-text .brand-short{display:inline}
  .search-wrap{display:none}
  .nav-tools .btn-mk{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure img{aspect-ratio:16/9}
  .hero-figure::after{inset:-8px;border-radius:20px}
  .split{grid-template-columns:1fr;gap:20px}
  .split + .split{margin-top:40px;padding-top:40px}
  .metric-grid{grid-template-columns:1fr;gap:16px}
  .cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .anchor-bar{top:60px}
  .main-header{height:60px}
  .nav-inner{height:60px}
  .hero-band{padding-bottom:44px}
}
@media (max-width:767px){
  :root{--sec-py:48px}
  body{font-size:16px}
  .container{padding-left:18px;padding-right:18px}
  .hero-band h1{font-size:clamp(28px,7vw,34px)}
  .hero-lead{font-size:17px}
  .hero-actions .btn-mk,.hero-actions .btn-mk-ghost{width:100%}
  .sec-head-row{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .footer-grid{grid-template-columns:1fr}
  .metric-card{padding:22px}
  #backTop{right:16px;bottom:18px}
  .cta-actions .btn-mk,.cta-actions .btn-mk-ghost{width:100%}
}
@media (max-width:520px){
  table.data-table{min-width:560px;font-size:14px}
  .acc-btn,.accordion-button{font-size:16px;padding:18px 18px}
  .accordion-body{padding:16px 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .main-header{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(255,255,255,.96)}
}

/* roulang page: category2 */
:root{
  --c-primary:#1A5FB4;
  --c-primary-600:#154D93;
  --c-primary-500:#2E79D4;
  --c-primary-050:#EAF2FC;
  --c-accent:#E8791B;
  --c-accent-050:#FFF3E6;
  --c-ink:#0E1B2C;
  --c-body:#46586D;
  --c-muted:#7C8CA0;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F9FD;
  --c-line:#E5EDF6;
  --c-line-strong:#D3DEEC;
  --c-success:#1E9E6A;
  --c-danger:#D74A3C;
  --r-card:16px;
  --r-lg:20px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(16,42,80,.04);
  --sh-2:0 10px 30px rgba(16,42,80,.06);
  --sh-3:0 18px 48px rgba(16,42,80,.10);
  --bs-primary:#1A5FB4;
  --bs-body-color:#46586D;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-border-color:#E5EDF6;
  --bs-border-radius:16px;
  --bs-link-color:#1A5FB4;
  --bs-link-hover-color:#154D93;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.2em}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--c-primary-600)}
ul{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1320px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(15,40,80,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.6);
  transition:background .28s ease, box-shadow .28s ease, backdrop-filter .28s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:none;backdrop-filter:none;
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.nav-brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;letter-spacing:0;flex-shrink:0;
}
.brand-text{color:var(--c-ink);font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--c-ink);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-link:hover,.nav-link.is-active{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search{display:flex;align-items:center;gap:0}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid transparent;background:transparent;
  color:var(--c-ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .22s ease,color .22s ease;
}
.icon-btn:hover{background:var(--c-primary-050);color:var(--c-primary)}
.search-input{
  width:0;opacity:0;height:38px;padding:0;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:14.5px;color:var(--c-ink);background:#fff;
  transition:width .28s ease,opacity .24s ease,padding .28s ease,border-color .24s ease;
}
.nav-search.is-open .search-input{width:220px;opacity:1;padding:0 12px;border-color:var(--c-line-strong);margin-left:8px}
.search-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,95,180,.12)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;text-decoration:none;
  transition:background .24s ease,color .24s ease,border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line-strong)}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#D06C14;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-cta{padding:10px 20px;font-size:14.5px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line-strong);background:#fff;color:var(--c-ink);align-items:center;justify-content:center;cursor:pointer;font-size:16px}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;z-index:1080;
  transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:22px 22px 26px;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer}
.drawer-nav a{
  display:block;font-size:17px;line-height:56px;color:var(--c-ink);font-weight:500;
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-foot .btn{width:100%}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(14,27,44,.42);z-index:1070;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-backdrop.is-open{opacity:1;visibility:visible}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--soft{background:var(--c-bg-soft)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);background:var(--c-primary-050);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;margin-bottom:16px}
.section-head p{font-size:17px;color:var(--c-body);margin:0}
.hairline{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- 页头 ---------- */
.page-head{padding:168px 0 64px;text-align:center}
.breadcrumb-line{
  display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--c-muted);margin-bottom:22px;
}
.breadcrumb-line a{color:var(--c-muted)}
.breadcrumb-line a:hover{color:var(--c-primary)}
.breadcrumb-line .current{color:var(--c-ink);font-weight:600}
.page-head h1{font-size:clamp(32px,4.4vw,50px);line-height:1.24;letter-spacing:-.01em;max-width:920px;margin:0 auto}
.page-head .lead{max-width:720px;margin:20px auto 0;font-size:19px;line-height:1.7;color:var(--c-body)}
.page-head .rule{width:72px;height:3px;border-radius:3px;background:var(--c-primary);margin:32px auto 0}

/* ---------- 横幅 ---------- */
.banner-strip{position:relative;height:280px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2)}
.banner-strip img{width:100%;height:100%;object-fit:cover}
.banner-strip::after{content:"";position:absolute;inset:0;background:rgba(26,95,180,.30)}
.banner-inner{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;padding:34px 40px;color:#fff}
.banner-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:8px}
.banner-inner p{color:rgba(255,255,255,.88);font-size:16px;margin:0;max-width:640px}

/* ---------- 场景错落网格 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;padding-bottom:32px}
.scene-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,121,212,.3)}
.scene-figure{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-050)}
.scene-figure img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.scene-card:hover .scene-figure img{transform:scale(1.04)}
.scene-body{padding:24px 26px 26px}
.scene-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.scene-body p{margin:0 0 16px;font-size:15.5px;line-height:1.75;color:var(--c-body)}
@media (min-width:992px){
  .scene-card:nth-child(odd){margin-top:32px}
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);
}
.link-arrow i{font-size:12px;transition:transform .24s ease}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 对比条 ---------- */
.compare-bar{
  background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:0;
}
.compare-item{padding:0 28px;position:relative}
.compare-item:first-child{padding-left:0}
.compare-item:last-child{padding-right:0}
.compare-item + .compare-item::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--c-line-strong);
}
.compare-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-050);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:14px;
}
.compare-item h3{font-size:18px;font-weight:600;margin-bottom:8px}
.compare-item p{font-size:15px;line-height:1.75;color:var(--c-body);margin:0}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.flow-step{border-top:2px solid var(--c-line);padding-top:22px}
.flow-step .num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-accent);
  background:var(--c-accent-050);border-radius:999px;padding:4px 12px;margin-bottom:14px;
  font-feature-settings:"tnum" 1;
}
.flow-step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:15px;line-height:1.75;color:var(--c-body);margin:0}

/* ---------- 引用卡 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.quote-card{
  background:var(--c-primary-050);border-radius:var(--r-card);padding:32px 32px 28px;
  border:1px solid rgba(26,95,180,.08);
}
.quote-mark{font-family:Georgia,"Times New Roman",serif;font-size:48px;line-height:1;color:var(--c-primary);opacity:.28;margin-bottom:6px}
.quote-card blockquote{margin:0 0 16px;font-size:16.5px;line-height:1.8;color:var(--c-ink)}
.quote-author{font-size:14px;color:var(--c-muted)}

/* ---------- 数据条 ---------- */
.metric-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;background:var(--c-bg-soft);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;
}
.metric-card .metric-num{
  font-size:clamp(30px,3.6vw,40px);font-weight:700;color:var(--c-primary);line-height:1.1;
  font-feature-settings:"tnum" 1;letter-spacing:-.02em;
}
.metric-card .metric-num span{font-size:18px;font-weight:600;margin-left:4px}
.metric-card .metric-label{font-size:14px;color:var(--c-muted);margin-top:10px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{
  border:1px solid var(--c-line);border-radius:14px !important;margin-bottom:14px;overflow:hidden;
  background:#fff;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--c-ink);background:#fff;padding:18px 24px;line-height:1.5;
  box-shadow:none !important;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;border-bottom:1px solid rgba(26,95,180,.3)}
.accordion-button::after{
  content:"+";background-image:none !important;width:24px;height:24px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:21px;font-weight:400;
  color:var(--c-primary);transform:none;transition:transform .26s ease,color .26s ease;margin-left:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--c-accent)}
.accordion-body{padding:18px 24px 22px;font-size:15.5px;line-height:1.85;color:var(--c-body)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary-050);border-radius:var(--r-lg);padding:48px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  border:1px solid rgba(26,95,180,.08);
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;margin-bottom:14px}
.cta-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px 26px}
.cta-points li{font-size:15px;color:var(--c-body);display:flex;align-items:center;gap:8px}
.cta-points i{color:var(--c-success);font-size:13px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 24px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:16px}
.site-footer p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);margin:0;max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links a{display:block;font-size:14.5px;color:rgba(255,255,255,.7);padding:5px 0}
.footer-links a:hover{color:#fff}
.footer-contact{list-style:none}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.7);padding:5px 0;display:flex;gap:10px;align-items:flex-start}
.footer-contact i{color:var(--c-primary-500);margin-top:5px;width:16px;text-align:center}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:32px;width:46px;height:46px;border-radius:50%;
  background:rgba(26,95,180,.08);color:var(--c-primary);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:16px;z-index:1040;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease,background .24s ease;
}
.to-top:hover{background:rgba(26,95,180,.16)}
.to-top.is-show{opacity:1;visibility:visible}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav{margin-left:12px}
  .nav-link{padding:8px 10px;font-size:14.5px}
}
@media (max-width:991px){
  .main-nav,.nav-search,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{height:60px;gap:12px}
  .brand-text{font-size:16px}
  .section{padding:72px 0}
  .page-head{padding:120px 0 48px}
  .page-head .lead{font-size:17.5px}
  .scene-grid{grid-template-columns:1fr;gap:24px;padding-bottom:0}
  .compare-bar{grid-template-columns:1fr;gap:24px;padding:28px}
  .compare-item{padding:0}
  .compare-item + .compare-item::before{display:none}
  .compare-item + .compare-item{border-top:1px solid var(--c-line-strong);padding-top:24px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .quote-grid{grid-template-columns:1fr}
  .metric-row{grid-template-columns:1fr;gap:20px;padding:26px}
  .cta-band{padding:34px 28px}
  .banner-strip{height:230px}
  .banner-inner{padding:24px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .site-footer{padding:52px 0 22px;margin-top:72px}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .page-head{padding:104px 0 36px}
  .page-head h1{font-size:clamp(28px,7vw,34px)}
  .page-head .lead{font-size:16.5px;margin-top:16px}
  .section-head{margin-bottom:32px}
  .flow-grid{grid-template-columns:1fr;gap:24px}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .banner-strip{height:200px;border-radius:16px}
  .to-top{right:16px;bottom:20px}
}
@media (max-width:575px){
  body{font-size:16px}
  .container{padding-left:18px;padding-right:18px}
  .scene-body{padding:20px 20px 22px}
  .quote-card{padding:24px 22px}
  .accordion-button{padding:16px 18px;font-size:16px}
  .accordion-body{padding:16px 18px 20px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .site-header{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(255,255,255,.95)}
  .scene-card:hover{transform:none}
  .scene-card:hover .scene-figure img{transform:none}
}