/* roulang page: index */
:root{
  --ng-primary:#0E7C66;
  --ng-primary-deep:#0A5C4C;
  --ng-primary-soft:#DCEEE8;
  --ng-accent:#E07B39;
  --ng-accent-soft:#FBE7D6;
  --ng-ink:#14201C;
  --ng-ink-2:#55655F;
  --ng-ink-3:#8B9A94;
  --ng-bg:#FAF8F4;
  --ng-surface:#FFFFFF;
  --ng-surface-2:#F2EDE4;
  --ng-line:#E3DCD0;
  --ng-grad:linear-gradient(135deg,#0A5C4C 0%,#0E7C66 48%,#17A88E 100%);
  --ng-grad-warm:linear-gradient(120deg,#E07B39 0%,#F2A35E 100%);
  --r-sm:10px;--r-md:16px;--r-lg:22px;--r-xl:30px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,28,.05),0 10px 26px -18px rgba(20,32,28,.30);
  --sh-2:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--ng-bg);color:var(--ng-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--ng-primary);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--ng-primary);outline-offset:2px;border-radius:6px;}

/* ---------- shell ---------- */
.shell-side{
  position:fixed;left:0;top:0;height:100vh;width:var(--nav-w);
  background:var(--ng-surface);border-right:1px solid var(--ng-line);
  display:flex;flex-direction:column;padding:24px 16px;overflow-y:auto;z-index:1040;
}
.shell-main{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.shell-overlay{display:none;}
.topbar{display:none;}

.brand{display:flex;align-items:center;gap:10px;padding:4px 6px 0;}
.brand-mark{
  width:40px;height:40px;border-radius:var(--r-md);background:var(--ng-grad);
  color:#fff;font-weight:800;font-size:16px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;flex:0 0 40px;
  box-shadow:var(--sh-2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-name{font-size:15px;font-weight:700;color:var(--ng-ink);}
.brand-sub{font-size:12px;color:var(--ng-ink-3);}

.nav-group{margin-top:28px;display:flex;flex-direction:column;gap:4px;}
.nav-label{font-size:11.5px;letter-spacing:.14em;color:var(--ng-ink-3);padding:0 14px 8px;font-weight:600;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:600;color:var(--ng-ink-2);
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:var(--ng-surface-2);color:var(--ng-ink);}
.nav-item.is-active{background:var(--ng-primary-soft);color:var(--ng-primary);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--ng-primary);
}
.side-card{
  margin-top:auto;margin-top:28px;background:var(--ng-surface-2);
  border-radius:var(--r-md);padding:16px;display:flex;flex-direction:column;gap:10px;
}
.side-card p{font-size:13px;line-height:1.7;color:var(--ng-ink-2);}
.side-card .btn{width:100%;justify-content:center;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--ng-grad);color:#fff;box-shadow:var(--sh-2);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 18px 36px -18px rgba(10,92,76,.6);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;color:var(--ng-primary);border:1.5px solid var(--ng-primary);
}
.btn-ghost:hover{background:var(--ng-primary-soft);color:var(--ng-primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ng-primary-deep);border:1.5px solid rgba(255,255,255,.9);}
.btn-light:hover{background:#fff;transform:translateY(-2px);color:var(--ng-primary-deep);box-shadow:0 18px 34px -20px rgba(0,0,0,.45);}
.btn-light:active{transform:translateY(0);}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.62);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}
.btn-outline-light:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:1200px;padding:0 clamp(20px,4vw,56px);margin:0 auto;}
section{scroll-margin-top:88px;}
.section-pad{padding:96px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.sec-title{font-size:clamp(24px,2.8vw,36px);line-height:1.22;font-weight:700;letter-spacing:-.01em;}
.sec-title::after{content:"";display:block;width:48px;height:3px;border-radius:2px;background:var(--ng-primary);margin-top:16px;}
.sec-sub{font-size:16px;color:var(--ng-ink-2);margin-top:14px;max-width:640px;}
.link-more{font-size:14.5px;font-weight:650;color:var(--ng-primary);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:var(--ng-primary-deep);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--ng-primary-soft);color:var(--ng-primary);font-size:12.5px;font-weight:600;line-height:1;
}
.badge-warm{background:var(--ng-accent-soft);color:#A9551F;}
.stat-card{
  background:var(--ng-surface);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh-1);
  border:1px solid var(--ng-line);display:flex;flex-direction:column;gap:4px;
}
.stat-num{
  font-size:clamp(26px,2.6vw,34px);font-weight:800;line-height:1.15;letter-spacing:-.02em;
  background:var(--ng-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-num span{font-size:.6em;font-weight:700;margin-left:2px;}
.stat-label{font-size:13px;color:var(--ng-ink-2);line-height:1.6;}

/* ---------- hero ---------- */
.hero{padding:32px 0 0;}
.hero-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--ng-grad);
  padding:clamp(32px,4.4vw,64px);color:#fff;box-shadow:var(--sh-2);
}
.hero-card::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.2;mix-blend-mode:overlay;
  -webkit-mask-image:linear-gradient(100deg,rgba(0,0,0,.2) 0%,rgba(0,0,0,.95) 100%);
  mask-image:linear-gradient(100deg,rgba(0,0,0,.2) 0%,rgba(0,0,0,.95) 100%);
}
.hero-card > *{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,3vw,48px);align-items:center;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);color:rgba(255,255,255,.94);font-size:12.5px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(255,255,255,.24);margin-bottom:20px;
}
.hero h1{
  font-size:clamp(32px,4.2vw,54px);line-height:1.14;font-weight:800;letter-spacing:-.02em;color:#fff;
}
.hero h1 em{font-style:normal;color:#FFD9BC;}
.hero-sub{
  margin-top:18px;font-size:clamp(15px,1.3vw,18px);line-height:1.85;color:rgba(255,255,255,.86);max-width:560px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.hero-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  font-size:13px;color:rgba(255,255,255,.92);font-weight:600;
}
.hero-badge b{font-size:16px;font-weight:800;color:#fff;}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.55);}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(10,92,76,.06),rgba(10,92,76,.34));
}
.hero-float{
  position:absolute;left:16px;bottom:16px;right:16px;z-index:2;
  background:rgba(255,255,255,.95);border-radius:var(--r-md);padding:12px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  color:var(--ng-ink);box-shadow:var(--sh-1);
}
.hero-float strong{font-size:14px;font-weight:700;}
.hero-float span{font-size:12.5px;color:var(--ng-ink-2);}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;}
.value-main{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-lg);
  padding:clamp(24px,2.6vw,36px);box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.value-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.value-side{display:grid;gap:24px;}
.value-small{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.value-small:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.icon-block{
  width:44px;height:44px;border-radius:12px;background:var(--ng-primary-soft);color:var(--ng-primary);
  display:flex;align-items:center;justify-content:center;
}
.icon-block svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.value-main h3,.value-small h3{font-size:20px;line-height:1.4;font-weight:650;}
.value-main p,.value-small p{font-size:15px;color:var(--ng-ink-2);line-height:1.85;}
.value-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);margin-top:4px;}
.text-link{font-size:14.5px;font-weight:650;color:var(--ng-primary);}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

/* ---------- demo ---------- */
.demo-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,3vw,48px);align-items:center;}
.demo-figure{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--ng-line);
  background:var(--ng-surface);
}
.demo-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.demo-list{display:flex;flex-direction:column;gap:20px;margin-top:28px;}
.demo-item{display:flex;gap:16px;align-items:flex-start;}
.demo-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--ng-primary);
  color:var(--ng-primary);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.demo-item h4{font-size:16.5px;font-weight:700;margin-bottom:4px;}
.demo-item p{font-size:14.5px;color:var(--ng-ink-2);line-height:1.8;}

/* ---------- proof ---------- */
.proof{background:var(--ng-surface-2);}
.proof-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--ng-surface);border-radius:var(--r-lg);border:1px solid var(--ng-line);
  box-shadow:var(--sh-1);overflow:hidden;
}
.proof-stat{padding:26px 22px;border-right:1px solid var(--ng-line);}
.proof-stat:last-child{border-right:0;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;}
.quote-card{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:14px;
  transition:transform .16s ease,box-shadow .16s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.quote-mark{font-size:30px;line-height:1;color:var(--ng-primary-soft);font-weight:800;}
.quote-card p{font-size:15px;line-height:1.85;color:var(--ng-ink);}
.quote-meta{font-size:13px;color:var(--ng-ink-3);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);color:inherit;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);color:inherit;}
.news-cover{position:relative;overflow:hidden;}
.news-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(10,92,76,.06),rgba(10,92,76,.24));}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{
  font-size:18px;line-height:1.5;font-weight:700;color:var(--ng-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover h3{color:var(--ng-primary);}
.news-body p{
  font-size:14px;line-height:1.8;color:var(--ng-ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--ng-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--ng-ink-3);
}
.news-foot .read-more{color:var(--ng-primary);font-weight:650;}
.news-empty{
  border:1.5px dashed var(--ng-line);background:rgba(220,238,232,.12);
  border-radius:var(--r-lg);min-height:220px;display:flex;flex-direction:column;gap:10px;
  align-items:center;justify-content:center;color:var(--ng-ink-2);font-size:15px;text-align:center;padding:24px;
}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;padding-top:12px;}
.price-card{
  position:relative;background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-lg);padding:28px 26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:18px;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.price-card.is-featured{
  background:var(--ng-grad);border-color:transparent;color:#fff;transform:translateY(-12px);
  box-shadow:0 30px 60px -30px rgba(10,92,76,.65);
}
.price-card.is-featured:hover{transform:translateY(-16px);}
.price-tag{
  position:absolute;right:20px;top:-13px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--ng-accent-soft);color:#A9551F;font-size:12.5px;font-weight:700;
  display:inline-flex;align-items:center;
}
.price-name{font-size:15px;font-weight:700;letter-spacing:.02em;}
.price-card.is-featured .price-name{color:rgba(255,255,255,.9);}
.price-num{font-size:clamp(28px,3vw,36px);font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--ng-primary-deep);}
.price-card.is-featured .price-num{color:#fff;}
.price-num small{font-size:13px;font-weight:600;color:var(--ng-ink-3);margin-left:6px;}
.price-card.is-featured .price-num small{color:rgba(255,255,255,.78);}
.price-desc{font-size:14px;color:var(--ng-ink-2);line-height:1.8;}
.price-card.is-featured .price-desc{color:rgba(255,255,255,.86);}
.price-list{display:flex;flex-direction:column;gap:11px;margin-top:2px;}
.price-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--ng-ink-2);}
.price-card.is-featured .price-list li{color:rgba(255,255,255,.9);}
.price-list li::before{
  content:"";flex:0 0 16px;width:16px;height:16px;margin-top:4px;border-radius:50%;
  background:var(--ng-primary-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M4.4 8.4l2.2 2.2 5-5' fill='none' stroke='%230E7C66' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/14px no-repeat;
}
.price-card.is-featured .price-list li::before{background-color:rgba(255,255,255,.22);}
.price-card .btn{margin-top:auto;width:100%;}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:clamp(24px,3vw,48px);align-items:start;}
.faq-side p{font-size:15px;color:var(--ng-ink-2);margin-top:16px;line-height:1.9;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-md);
  position:relative;overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item:hover{border-color:var(--ng-primary-soft);}
.faq-item.is-open{border-color:var(--ng-primary-soft);box-shadow:var(--sh-1);}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--ng-primary);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:650;color:var(--ng-ink);
  transition:color .16s ease;
}
.faq-item.is-open .faq-q{color:var(--ng-primary);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;border-radius:50%;
  background:var(--ng-primary-soft);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--ng-primary);border-radius:2px;transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{width:10px;height:1.8px;}
.faq-icon::after{width:1.8px;height:10px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{padding:0 20px 20px;font-size:14.5px;line-height:1.9;color:var(--ng-ink-2);}

/* ---------- end cta ---------- */
.end-cta{
  border-radius:var(--r-xl);background:var(--ng-grad);color:#fff;position:relative;overflow:hidden;
  padding:clamp(32px,4vw,56px);display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.end-cta::before{
  content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.16;
}
.end-cta > *{position:relative;z-index:1;}
.end-cta h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;color:#fff;}
.end-cta p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.85);max-width:560px;line-height:1.85;}
.end-cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ng-primary-deep);color:#fff;margin-top:96px;}
.footer-inner{padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);}
.footer-brand-name{font-size:15px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:rgba(255,255,255,.62);}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1050;display:inline-flex;align-items:center;gap:12px;
  padding:10px 12px 10px 20px;border-radius:var(--r-pill);background:var(--ng-grad);color:#fff;
  box-shadow:var(--sh-2);opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease;animation:ngBreath 2.4s ease-in-out infinite;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{color:#fff;filter:brightness(1.06);}
.float-cta-text{display:flex;flex-direction:column;line-height:1.35;}
.float-cta-text b{font-size:14px;font-weight:700;}
.float-cta-text span{font-size:11.5px;color:rgba(255,255,255,.82);}
.float-cta-arrow{
  width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
@keyframes ngBreath{0%,100%{box-shadow:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);}50%{box-shadow:0 6px 18px rgba(14,124,102,.22),0 30px 54px -24px rgba(14,124,102,.55);}}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--nav-w:216px;}
  .shell-side{padding:20px 12px;}
  .nav-item{font-size:14px;padding:0 12px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:var(--ng-surface);border-bottom:1px solid var(--ng-line);z-index:1035;
  }
  .topbar .brand{padding:0;}
  .topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:14px;}
  .topbar .brand-name{font-size:14px;}
  .topbar .brand-sub{font-size:11px;}
  .nav-toggle{
    width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    border-radius:var(--r-sm);border:1px solid var(--ng-line);background:var(--ng-surface);
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ng-ink);position:relative;border-radius:2px;}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ng-ink);border-radius:2px;
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .shell-side{
    width:272px;transform:translateX(-100%);transition:transform .28s ease;z-index:1045;
    box-shadow:0 0 40px rgba(20,32,28,.18);padding-top:24px;
  }
  .shell-side.is-open{transform:translateX(0);}
  .shell-overlay{
    display:block;position:fixed;inset:0;background:rgba(20,32,28,.45);
    opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:1042;
  }
  .shell-overlay.is-open{opacity:1;pointer-events:auto;}
  .shell-main{margin-left:0;padding-top:56px;}
  body{padding-bottom:88px;}
  .section-pad{padding:72px 0;}
  .hero{padding-top:20px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-visual{order:2;}
  .value-grid{grid-template-columns:1fr;}
  .demo-wrap{grid-template-columns:1fr;}
  .proof-stats{grid-template-columns:repeat(2,1fr);}
  .proof-stat:nth-child(2){border-right:0;}
  .proof-stat:nth-child(1),.proof-stat:nth-child(2){border-bottom:1px solid var(--ng-line);}
  .quote-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.is-featured{transform:none;}
  .price-card.is-featured:hover{transform:translateY(-4px);}
  .faq-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{margin-top:72px;}
  .float-cta{
    right:12px;left:12px;bottom:12px;border-radius:var(--r-lg);padding:10px 12px;
    background:var(--ng-surface);color:var(--ng-ink);box-shadow:0 -2px 24px rgba(20,32,28,.16);
    justify-content:space-between;animation:none;
  }
  .float-cta:hover{color:var(--ng-ink);}
  .float-cta-text b{color:var(--ng-ink);font-size:14px;}
  .float-cta-text span{color:var(--ng-ink-2);}
  .float-cta-arrow{background:var(--ng-grad);color:#fff;width:auto;height:40px;padding:0 18px;border-radius:var(--r-pill);font-size:13.5px;font-weight:650;}
}
@media (max-width:767px){
  .section-pad{padding:56px 0;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-card{border-radius:var(--r-lg);}
  .hero-badge{font-size:12px;padding:7px 12px;}
  .news-grid{grid-template-columns:1fr;gap:16px;}
  .proof-stats{grid-template-columns:1fr;}
  .proof-stat{border-right:0;border-bottom:1px solid var(--ng-line);}
  .proof-stat:last-child{border-bottom:0;}
  .end-cta{padding:28px 24px;border-radius:var(--r-lg);}
  .end-cta-actions{width:100%;flex-direction:column;}
  .end-cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-inner{padding:48px 0 0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left;}
  .sec-head{margin-bottom:26px;}
}
@media (max-width:479px){
  .wrap{padding:0 18px;}
  .hero-card{padding:24px 20px;}
  .hero-sub{font-size:14.5px;}
  .stat-num{font-size:26px;}
  .faq-q{font-size:15px;padding:16px 16px;}
  .faq-a p{padding:0 16px 16px;}
  .float-cta-text span{display:none;}
}

/* roulang page: article */
:root{
  --ng-primary:#0E7C66; --ng-primary-deep:#0A5C4C; --ng-primary-soft:#DCEEE8;
  --ng-accent:#E07B39; --ng-accent-soft:#FBE7D6;
  --ng-ink:#14201C; --ng-ink-2:#55655F; --ng-ink-3:#8B9A94;
  --ng-bg:#FAF8F4; --ng-surface:#FFFFFF; --ng-surface-2:#F2EDE4; --ng-line:#E3DCD0;
  --ng-grad:linear-gradient(135deg,#0A5C4C 0%,#0E7C66 48%,#17A88E 100%);
  --ng-grad-warm:linear-gradient(120deg,#E07B39 0%,#F2A35E 100%);
  --r-sm:10px; --r-md:16px; --r-lg:22px; --r-xl:30px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,28,.05),0 10px 26px -18px rgba(20,32,28,.30);
  --sh-2:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--ng-bg);color:var(--ng-ink);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .16s ease;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--ng-primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--ng-primary-soft);color:var(--ng-primary-deep);}

/* ============ 布局骨架 ============ */
.shell-side{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--ng-surface);border-right:1px solid var(--ng-line);
  display:flex;flex-direction:column;gap:8px;
  padding:24px 16px;overflow-y:auto;z-index:120;
}
.shell-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,56px);}

/* ============ 侧栏品牌 ============ */
.side-brand{display:flex;align-items:center;gap:12px;padding:4px 6px 20px;border-bottom:1px solid var(--ng-line);margin-bottom:8px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:13px;background:var(--ng-grad);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;letter-spacing:-.02em;
  box-shadow:0 6px 16px -8px rgba(14,124,102,.65);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-name{font-size:15px;font-weight:700;color:var(--ng-ink);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--ng-ink-3);font-weight:500;}

/* ============ 侧栏菜单 ============ */
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-label{font-size:11.5px;font-weight:600;letter-spacing:.12em;color:var(--ng-ink-3);padding:12px 14px 6px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:11px;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:500;color:var(--ng-ink-2);
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.nav-item:hover{background:var(--ng-surface-2);color:var(--ng-ink);}
.nav-item.is-active{background:var(--ng-primary-soft);color:var(--ng-primary);font-weight:650;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--ng-primary);
}
.nav-item:active{transform:scale(.99);}

/* ============ 侧栏底部卡片 ============ */
.side-card{
  margin-top:auto;background:var(--ng-surface-2);border-radius:var(--r-md);
  padding:16px;display:flex;flex-direction:column;gap:12px;
}
.side-card p{font-size:13px;line-height:1.75;color:var(--ng-ink-2);}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px;width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;letter-spacing:.01em;border:1.5px solid transparent;
  white-space:nowrap;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,filter .16s ease;
}
.btn-primary{background:var(--ng-grad);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 4px 12px rgba(14,124,102,.18),0 30px 52px -26px rgba(14,124,102,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--ng-primary);color:var(--ng-primary);background:transparent;}
.btn-ghost:hover{background:var(--ng-primary-soft);color:var(--ng-primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

/* ============ 徽章 / 标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--ng-primary-soft);color:var(--ng-primary);
  font-size:12.5px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-warm{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--ng-accent-soft);color:#A9551F;font-size:12.5px;font-weight:600;line-height:1;
}
.plain-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--ng-surface-2);color:var(--ng-ink-2);font-size:12.5px;font-weight:600;line-height:1;
}

/* ============ 顶部移动栏 ============ */
.mobile-topbar{display:none;}
.nav-burger{
  width:44px;height:44px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:var(--r-md);border:1px solid var(--ng-line);background:#fff;transition:background .16s ease;
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ng-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-burger:hover{background:var(--ng-surface-2);}
.nav-burger:active{background:var(--ng-primary-soft);}
.side-mask{display:none;}

/* ============ 主体与面包屑 ============ */
.page-main{flex:1 0 auto;padding:36px 0 8px;}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:var(--ng-ink-3);line-height:1.6;margin-bottom:26px;
}
.breadcrumb-nav a{color:var(--ng-ink-3);}
.breadcrumb-nav a:hover{color:var(--ng-primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.breadcrumb-nav .sep{color:var(--ng-line);font-weight:700;}
.breadcrumb-nav .current{color:var(--ng-ink-2);font-weight:600;}

/* ============ 文章头部 ============ */
.article-head{max-width:900px;}
.cover-frame{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  aspect-ratio:21/9;background:var(--ng-surface-2);position:relative;
}
.cover-frame img{width:100%;height:100%;object-fit:cover;}
.cover-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,92,76,.02),rgba(10,92,76,.22));
}
.article-head h1{
  font-size:clamp(26px,3vw,40px);line-height:1.35;font-weight:750;letter-spacing:-.015em;
  margin:28px 0 16px;color:var(--ng-ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ng-ink-3);
}
.article-meta .dot{color:var(--ng-line);font-weight:700;}

/* ============ 正文排版 ============ */
.article-body{
  max-width:760px;margin:0 auto;padding:40px 0 0;
  font-size:17px;line-height:1.95;color:var(--ng-ink);
}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;
  margin:42px 0 16px;padding-left:16px;color:var(--ng-ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--ng-primary);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:650;color:var(--ng-primary);margin:30px 0 12px;}
.article-body h4{font-size:16.5px;font-weight:650;margin:24px 0 10px;}
.article-body a{color:var(--ng-primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.article-body a:hover{color:var(--ng-primary-deep);}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;border-left:3px solid var(--ng-primary);
  background:rgba(220,238,232,.55);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ng-ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 20px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.8em;width:7px;height:7px;
  border-radius:2px;background:var(--ng-primary);
}
.article-body ol{counter-reset:ngli;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:ngli;}
.article-body ol li::before{
  content:counter(ngli);position:absolute;left:0;top:.34em;
  width:19px;height:19px;line-height:17px;text-align:center;
  font-size:12px;font-weight:700;color:var(--ng-primary);
  border:1px solid var(--ng-primary);border-radius:var(--r-pill);
}
.article-body img{border-radius:var(--r-md);margin:24px 0 8px;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ng-ink-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--ng-line);vertical-align:top;}
.article-body th{background:var(--ng-surface-2);font-weight:650;color:var(--ng-ink);}
.article-body hr{border:0;border-top:1px solid var(--ng-line);margin:36px 0;}
.article-body strong{font-weight:700;color:var(--ng-primary-deep);}

/* ============ 空状态 ============ */
.empty-state{
  max-width:760px;margin:12px auto 0;padding:56px 32px;text-align:center;
  border:1.5px dashed var(--ng-line);border-radius:var(--r-lg);
  background:rgba(220,238,232,.14);
}
.empty-state h1{font-size:24px;font-weight:700;margin-bottom:12px;}
.empty-state p{font-size:15px;color:var(--ng-ink-2);margin-bottom:22px;}

/* ============ 标签区 ============ */
.tag-block{max-width:760px;margin:44px auto 0;padding-top:24px;border-top:1px solid var(--ng-line);}
.tag-block-title{font-size:13px;font-weight:650;color:var(--ng-ink-3);letter-spacing:.08em;margin-bottom:14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ 延伸阅读 ============ */
.related{max-width:900px;margin:56px auto 0;}
.related-title{font-size:22px;font-weight:700;margin-bottom:22px;position:relative;padding-left:16px;}
.related-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:18px;border-radius:2px;background:var(--ng-primary);
}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.mini-card{
  display:flex;flex-direction:column;background:var(--ng-surface);
  border:1px solid var(--ng-line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);color:inherit;}
.mini-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--ng-surface-2);position:relative;}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.mini-card:hover .mini-thumb img{transform:scale(1.04);}
.mini-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,92,76,.06),rgba(10,92,76,.28));}
.mini-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;}
.mini-body h3{font-size:17px;font-weight:700;line-height:1.5;color:var(--ng-ink);}
.mini-body p{font-size:13.5px;line-height:1.75;color:var(--ng-ink-2);}
.mini-more{font-size:13.5px;font-weight:650;color:var(--ng-primary);margin-top:2px;}

/* ============ 返回条 ============ */
.back-row{max-width:760px;margin:44px auto 0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ng-primary-deep);color:#fff;margin-top:88px;padding-top:64px;flex-shrink:0;}
.footer-inner{padding-bottom:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:4px;}
.footer-brand-name{font-size:15px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:rgba(255,255,255,.6);}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-top:14px;max-width:320px;}
.footer-title{font-size:12.5px;font-weight:650;letter-spacing:.12em;color:rgba(255,255,255,.55);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);transition:color .16s ease,transform .16s ease;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.55);
}

/* ============ 浮动 CTA ============ */
.fab-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:var(--r-pill);background:var(--ng-grad);color:#fff;
  font-size:14.5px;font-weight:650;box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,filter .16s ease;
}
.fab-cta:hover{color:#fff;filter:brightness(1.06);}
.fab-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;animation:fabBreath 2.4s ease-in-out infinite;}
@keyframes fabBreath{
  0%,100%{box-shadow:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);}
  50%{box-shadow:0 8px 20px rgba(14,124,102,.22),0 32px 56px -22px rgba(14,124,102,.55);}
}

/* ============ 断点 ============ */
@media (max-width:1199px){
  :root{--side-w:216px;}
  .shell-side{padding:22px 12px;}
  .nav-item{font-size:14px;padding:0 12px;}
  .side-brand{padding-bottom:16px;}
  .brand-name{font-size:14px;}
}
@media (max-width:991px){
  body{padding-bottom:0;}
  .mobile-topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:sticky;top:0;z-index:100;height:56px;padding:0 16px;
    background:rgba(255,255,255,.97);border-bottom:1px solid var(--ng-line);
  }
  .mobile-topbar .side-brand{border:0;margin:0;padding:0;}
  .mobile-topbar .brand-sub{display:none;}
  .shell-side{
    width:280px;transform:translateX(-100%);
    transition:transform .26s ease;padding:22px 16px;z-index:130;
    box-shadow:0 24px 60px -24px rgba(20,32,28,.5);
  }
  .shell-side.is-open{transform:translateX(0);}
  .shell-side .brand-sub{display:block;}
  .shell-main{margin-left:0;}
  .side-mask{
    display:block;position:fixed;inset:0;background:rgba(20,32,28,.45);
    opacity:0;pointer-events:none;transition:opacity .26s ease;z-index:125;
  }
  .side-mask.is-open{opacity:1;pointer-events:auto;}
  .page-main{padding-top:24px;}
  .article-head h1{margin-top:22px;}
  .related{margin-top:44px;}
}
@media (max-width:767px){
  .article-body{font-size:16px;line-height:1.9;padding-top:30px;}
  .article-body h2{font-size:21px;margin-top:34px;}
  .article-body h3{font-size:17.5px;}
  .article-body blockquote{padding:16px 18px;font-size:15px;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .site-footer{margin-top:64px;padding-top:52px;}
  .footer-bottom{margin-top:34px;flex-direction:column;align-items:flex-start;gap:6px;}
  .fab-cta{
    left:12px;right:12px;bottom:12px;justify-content:center;
    border-radius:var(--r-lg);height:50px;
  }
  body{padding-bottom:88px;}
  .tag-block,.back-row{margin-top:34px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .article-meta{font-size:12.5px;gap:8px;}
  .empty-state{padding:40px 20px;}
  .breadcrumb-nav{font-size:12px;}
}
@media (max-width:479px){
  .cover-frame{aspect-ratio:16/9;}
  .article-head h1{font-size:24px;}
  .btn{height:44px;padding:0 20px;font-size:14.5px;}
  .related-title{font-size:19px;}
}

/* roulang page: category1 */
:root{
  --ng-primary:#0E7C66;
  --ng-primary-deep:#0A5C4C;
  --ng-primary-soft:#DCEEE8;
  --ng-accent:#E07B39;
  --ng-accent-soft:#FBE7D6;
  --ng-ink:#14201C;
  --ng-ink-2:#55655F;
  --ng-ink-3:#8B9A94;
  --ng-bg:#FAF8F4;
  --ng-surface:#FFFFFF;
  --ng-surface-2:#F2EDE4;
  --ng-line:#E3DCD0;
  --ng-grad:linear-gradient(135deg,#0A5C4C 0%,#0E7C66 48%,#17A88E 100%);
  --ng-grad-warm:linear-gradient(120deg,#E07B39 0%,#F2A35E 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:30px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,28,.05),0 10px 26px -18px rgba(20,32,28,.30);
  --sh-2:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ng-bg);
  color:var(--ng-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease,text-decoration-color .16s ease;}
a:hover{color:var(--ng-primary);}
button{font-family:inherit;}
p{margin:0 0 18px;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ng-primary);outline-offset:2px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,56px);}

/* ---------- 移动顶栏 ---------- */
.mobile-top{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--ng-surface);
  border-bottom:1px solid var(--ng-line);
  align-items:center;justify-content:space-between;
  padding:0 14px;z-index:80;
}
.mt-brand{display:flex;align-items:center;gap:10px;}
.mt-brand .brand-mark{width:32px;height:32px;font-size:14px;border-radius:10px;}
.mt-brand .brand-name{font-size:14.5px;font-weight:700;color:var(--ng-ink);letter-spacing:.01em;}
.burger{
  width:44px;height:44px;border:1px solid var(--ng-line);border-radius:var(--r-md);
  background:var(--ng-surface);display:grid;place-items:center;cursor:pointer;
  transition:background .16s ease,border-color .16s ease;
}
.burger:hover{background:var(--ng-surface-2);border-color:var(--ng-primary-soft);}
.burger span{display:block;width:18px;height:2px;background:var(--ng-ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ng-ink);border-radius:2px;
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(20,32,28,.45);z-index:79;opacity:0;
  transition:opacity .2s ease;
}
.drawer-mask.is-open{display:block;opacity:1;}

/* ---------- 侧栏 ---------- */
.shell-side{
  position:fixed;left:0;top:0;height:100vh;width:var(--side-w);
  background:var(--ng-surface);
  border-right:1px solid var(--ng-line);
  padding:24px 16px;
  display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;z-index:90;
  transition:transform .24s ease;
}
.brand{display:flex;align-items:center;gap:11px;}
.brand-mark{
  width:40px;height:40px;border-radius:var(--r-md);
  background:var(--ng-grad);color:#fff;font-weight:800;font-size:17px;
  display:grid;place-items:center;letter-spacing:.02em;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-name{font-size:15px;font-weight:700;color:var(--ng-ink);}
.brand-sub{font-size:12px;color:var(--ng-ink-3);}
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-label{
  font-size:12px;font-weight:600;color:var(--ng-ink-3);
  letter-spacing:.12em;padding:0 12px 8px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:500;color:var(--ng-ink-2);
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{
  width:18px;height:18px;flex:none;fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:var(--ng-surface-2);color:var(--ng-ink);}
.nav-item.is-active{background:var(--ng-primary-soft);color:var(--ng-primary);font-weight:650;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:var(--r-pill);background:var(--ng-primary);
}
.side-card{
  margin-top:auto;background:var(--ng-surface-2);border-radius:var(--r-md);
  padding:16px;font-size:13.5px;line-height:1.7;color:var(--ng-ink-2);
}
.side-card p{margin:0 0 12px;font-size:13.5px;color:var(--ng-ink-2);}
.side-card .btn{width:100%;justify-content:center;height:40px;font-size:13.5px;padding:0 14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;border:1.5px solid transparent;
  cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--ng-grad);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 14px rgba(14,124,102,.22),0 30px 52px -26px rgba(14,124,102,.5);color:#fff;filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ng-primary);border-color:var(--ng-primary);}
.btn-ghost:hover{background:var(--ng-primary-soft);color:var(--ng-primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ng-primary-deep);}
.btn-light:hover{background:#fff;color:var(--ng-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;transform:translateY(-2px);}

/* ---------- 主区 ---------- */
.shell-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1 1 auto;}

/* ---------- 页头横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--ng-grad);
  color:#fff;
  padding:clamp(28px,4.6vw,46px) clamp(22px,4vw,44px);
  margin-top:clamp(22px,3.2vw,36px);
  min-height:200px;
  display:flex;flex-direction:column;justify-content:center;
  box-shadow:var(--sh-2);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.18;mix-blend-mode:overlay;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,92,76,.72) 0%,rgba(10,92,76,.24) 58%,rgba(10,92,76,0) 100%);
  pointer-events:none;
}
.page-hero > *{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:14px;}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.18;font-weight:800;
  letter-spacing:-.01em;color:#fff;margin-bottom:12px;
}
.page-hero p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:640px;margin:0 0 22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 板块 ---------- */
.section{padding:clamp(48px,6vw,80px) 0 0;}
.section-head{max-width:720px;margin-bottom:34px;}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.22;
  color:var(--ng-ink);padding-bottom:14px;position:relative;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:48px;height:3px;
  border-radius:var(--r-pill);background:var(--ng-primary);
}
.section-head p{margin:14px 0 0;font-size:15.5px;line-height:1.85;color:var(--ng-ink-2);}

/* ---------- 服务卡网格 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.svc-card{
  background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.svc-media{position:relative;overflow:hidden;}
.svc-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  transition:transform .4s ease;
}
.svc-card:hover .svc-media img{transform:scale(1.03);}
.svc-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(rgba(10,92,76,.06),rgba(10,92,76,.26));
  pointer-events:none;
}
.svc-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.svc-body h3{font-size:19px;font-weight:700;line-height:1.42;color:var(--ng-ink);}
.svc-body p{font-size:14.5px;line-height:1.8;color:var(--ng-ink-2);margin:0;}
.svc-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding-top:6px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:650;color:var(--ng-primary);
}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 徽章 ---------- */
.badge-soft,.badge-warm{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.01em;
}
.badge-soft{background:var(--ng-primary-soft);color:var(--ng-primary-deep);}
.badge-warm{background:var(--ng-accent-soft);color:#A9551F;}

/* ---------- 数据横条 ---------- */
.stat-strip{
  margin-top:clamp(36px,4.6vw,56px);
  background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  overflow:hidden;
}
.stat-cell{padding:24px 26px;position:relative;}
.stat-cell + .stat-cell::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;background:var(--ng-line);
}
.stat-num{
  font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;
  background:var(--ng-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;margin-bottom:6px;
}
.stat-num small{font-size:15px;font-weight:700;margin-left:2px;}
.stat-label{font-size:13px;color:var(--ng-ink-2);line-height:1.6;}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,3.4vw,48px);align-items:center;}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  border:1px solid var(--ng-line);background:var(--ng-surface);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:6px;}
.check-item{display:flex;gap:14px;align-items:flex-start;}
.check-dot{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1.5px solid var(--ng-primary);color:var(--ng-primary);
  display:grid;place-items:center;font-size:12.5px;font-weight:700;margin-top:3px;
}
.check-item h4{font-size:16px;font-weight:650;color:var(--ng-ink);margin-bottom:4px;}
.check-item p{font-size:14px;line-height:1.75;color:var(--ng-ink-2);margin:0;}

/* ---------- 流程 ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  counter-reset:step;
}
.flow-item{
  position:relative;background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-md);padding:22px 20px;box-shadow:var(--sh-1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.flow-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.flow-step{
  width:34px;height:34px;border-radius:50%;border:1.5px solid var(--ng-primary);
  color:var(--ng-primary);display:grid;place-items:center;
  font-size:14px;font-weight:700;margin-bottom:14px;
}
.flow-item h4{font-size:16px;font-weight:650;margin-bottom:6px;}
.flow-item p{font-size:13.8px;line-height:1.75;color:var(--ng-ink-2);margin:0;}

/* ---------- 适用团队列表 ---------- */
.fit-list{display:flex;flex-direction:column;gap:14px;}
.fit-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--sh-1);
  border-left:4px solid var(--ng-primary);
  transition:transform .16s ease,box-shadow .16s ease;
}
.fit-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.fit-item h4{font-size:16.5px;font-weight:650;margin-bottom:6px;}
.fit-item p{font-size:14px;line-height:1.78;color:var(--ng-ink-2);margin:0;}
.fit-tag{
  flex:none;font-size:12.5px;font-weight:600;color:#A9551F;background:var(--ng-accent-soft);
  border-radius:var(--r-pill);height:26px;padding:0 10px;display:inline-flex;align-items:center;
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(24px,3.4vw,48px);align-items:start;}
.faq-aside h2{font-size:clamp(24px,2.8vw,32px);line-height:1.24;margin-bottom:14px;}
.faq-aside p{font-size:14.5px;line-height:1.85;color:var(--ng-ink-2);margin:0;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  position:relative;background:var(--ng-surface);border:1px solid var(--ng-line);
  border-radius:var(--r-md);overflow:hidden;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item:hover{border-color:var(--ng-primary-soft);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;background:none;border:0;cursor:pointer;
  font-size:15.5px;font-weight:650;color:var(--ng-ink);text-align:left;line-height:1.6;
  transition:color .16s ease;
}
.faq-q:hover{color:var(--ng-primary);}
.faq-icon{
  position:relative;flex:none;width:16px;height:16px;margin-top:2px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ng-primary);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item.is-open{border-color:var(--ng-primary-soft);}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--ng-primary);
}
.faq-item.is-open .faq-q{color:var(--ng-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--ng-ink-2);}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:clamp(44px,5.4vw,72px);
  background:var(--ng-surface-2);border-radius:var(--r-lg);
  padding:clamp(24px,3.4vw,36px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;margin-bottom:8px;}
.cta-band p{font-size:14.5px;line-height:1.8;color:var(--ng-ink-2);margin:0;max-width:620px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(56px,7vw,96px);
  background:var(--ng-primary-deep);color:#fff;
  padding:clamp(40px,5vw,60px) 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{width:38px;height:38px;font-size:16px;background:var(--ng-grad);}
.footer-brand-name{font-size:15px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:rgba(255,255,255,.65);}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72);margin:0;max-width:320px;}
.footer-title{font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px;}
.footer-contact{display:flex;flex-direction:column;gap:9px;font-size:13.5px;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:clamp(28px,3.6vw,44px);
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:0 22px;height:52px;border-radius:var(--r-pill);
  background:var(--ng-grad);color:#fff;font-size:14.5px;font-weight:650;
  box-shadow:var(--sh-2);opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,filter .16s ease;
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{color:#fff;filter:brightness(1.07);transform:translateY(-2px);}
.float-cta svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 平板 ---------- */
@media (max-width:1199px){
  :root{--side-w:216px;}
  .shell-side{padding:20px 12px;gap:18px;}
  .nav-item{padding:0 12px;font-size:14px;}
  .nav-item span{white-space:normal;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .mobile-top{display:flex;}
  .shell-side{
    transform:translateX(-100%);width:280px;padding:20px 16px;
    box-shadow:0 0 40px rgba(20,32,28,.18);
  }
  .shell-side.is-open{transform:translateX(0);}
  .shell-main{margin-left:0;padding-top:56px;}
  .split{grid-template-columns:1fr;}
  .split-media{order:-1;}
  .faq-wrap{grid-template-columns:1fr;}
  .svc-grid{grid-template-columns:1fr;}
  .page-hero{min-height:170px;}
}
@media (max-width:767px){
  body{font-size:15.5px;padding-bottom:88px;}
  .svc-grid{gap:16px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell + .stat-cell::before{left:22px;right:22px;top:0;bottom:auto;width:auto;height:1px;}
  .flow{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .float-cta{
    left:12px;right:12px;bottom:12px;height:56px;justify-content:center;
    border-radius:var(--r-lg);background:var(--ng-surface);color:var(--ng-primary-deep);
    border:1px solid var(--ng-line);box-shadow:0 6px 24px rgba(20,32,28,.16);
  }
  .float-cta:hover{color:var(--ng-primary-deep);transform:none;}
  .float-cta .fc-inner{display:none;}
  .page-hero .hero-actions .btn{flex:1 1 100%;}
  .fit-item{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .footer-grid{grid-template-columns:1fr;}
  .stat-cell{padding:20px;}
  .svc-body{padding:18px 18px 20px;}
}

/* roulang page: category2 */
:root{
  --ng-primary:#0E7C66;
  --ng-primary-deep:#0A5C4C;
  --ng-primary-soft:#DCEEE8;
  --ng-accent:#E07B39;
  --ng-accent-soft:#FBE7D6;
  --ng-ink:#14201C;
  --ng-ink-2:#55655F;
  --ng-ink-3:#8B9A94;
  --ng-bg:#FAF8F4;
  --ng-surface:#FFFFFF;
  --ng-surface-2:#F2EDE4;
  --ng-line:#E3DCD0;
  --ng-grad:linear-gradient(135deg,#0A5C4C 0%,#0E7C66 48%,#17A88E 100%);
  --ng-grad-warm:linear-gradient(120deg,#E07B39 0%,#F2A35E 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:30px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,28,.05),0 10px 26px -18px rgba(20,32,28,.30);
  --sh-2:0 2px 8px rgba(14,124,102,.12),0 26px 46px -26px rgba(14,124,102,.42);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ng-bg);
  color:var(--ng-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--ng-primary);}
a:focus-visible,button:focus-visible{outline:2px solid var(--ng-primary);outline-offset:2px;border-radius:var(--r-sm);}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,56px);}

/* ============ 左侧 App Shell ============ */
.shell-topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;z-index:1060;
  background:var(--ng-surface);
  border-bottom:1px solid var(--ng-line);
  align-items:center;justify-content:space-between;
  padding:0 12px 0 14px;
}
.topbar-brand{display:flex;align-items:center;gap:10px;}
.topbar-brand .brand-mark{width:34px;height:34px;font-size:14px;}
.topbar-brand .brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;}
.burger{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);color:var(--ng-ink-2);transition:background .16s ease,color .16s ease;
}
.burger:hover{background:var(--ng-surface-2);color:var(--ng-primary);}
.burger:active{background:var(--ng-primary-soft);}
.burger svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}

.shell-side{
  position:fixed;left:0;top:0;height:100vh;width:var(--side-w);z-index:1050;
  background:var(--ng-surface);
  border-right:1px solid var(--ng-line);
  display:flex;flex-direction:column;
  padding:24px 16px;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px 20px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);
  background:var(--ng-grad);
  color:#fff;font-weight:800;font-size:16px;letter-spacing:.02em;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.brand-name{font-size:15px;font-weight:700;color:var(--ng-ink);}
.brand-sub{font-size:12px;color:var(--ng-ink-3);letter-spacing:.02em;}
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-label{
  font-size:11.5px;font-weight:600;color:var(--ng-ink-3);
  letter-spacing:.14em;padding:0 14px 8px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:11px;
  height:44px;padding:0 14px;
  border-radius:var(--r-md);
  color:var(--ng-ink-2);
  font-size:14.5px;font-weight:500;
  transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.nav-item:hover{background:var(--ng-surface-2);color:var(--ng-ink);}
.nav-item:active{background:var(--ng-primary-soft);}
.nav-item.is-active{background:var(--ng-primary-soft);color:var(--ng-primary);font-weight:650;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:var(--r-pill);background:var(--ng-primary);
}
.side-card{
  margin-top:auto;padding:16px;
  background:var(--ng-surface-2);
  border-radius:var(--r-md);
  margin-top:28px;
}
.side-card p{font-size:13px;line-height:1.7;color:var(--ng-ink-2);}
.side-card .btn-main{margin-top:12px;width:100%;justify-content:center;height:42px;font-size:14px;padding:0 14px;}

.shell-main{
  margin-left:var(--side-w);
  min-height:100vh;
  padding-bottom:40px;
}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;line-height:1;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease,border-color .16s ease;
}
.btn-main{background:var(--ng-grad);color:#fff;box-shadow:var(--sh-2);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(14,124,102,.20),0 30px 52px -26px rgba(14,124,102,.55);filter:brightness(1.06);}
.btn-main:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--ng-primary);border:1.5px solid var(--ng-primary);}
.btn-ghost:hover{background:var(--ng-primary-soft);color:var(--ng-primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:var(--ng-primary-soft);}
.btn-light{background:#fff;color:var(--ng-primary-deep);box-shadow:var(--sh-1);}
.btn-light:hover{background:#fff;color:var(--ng-primary);transform:translateY(-2px);}
.btn-light:active{transform:translateY(0);}

/* ============ 徽章 / 标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);
  background:var(--ng-primary-soft);color:var(--ng-primary);
  font-size:12.5px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-warm{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);
  background:var(--ng-accent-soft);color:#A9551F;
  font-size:12.5px;font-weight:600;line-height:1;
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);
  border:1px solid var(--ng-line);background:var(--ng-surface);
  color:var(--ng-ink-2);font-size:12.5px;font-weight:500;line-height:1;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 页头横幅（浅色版） ============ */
.page-banner{
  margin-top:32px;
  background:var(--ng-surface-2);
  border-left:6px solid var(--ng-primary);
  border-radius:var(--r-lg);
  padding:clamp(24px,3.4vw,40px) clamp(22px,3.6vw,44px);
  position:relative;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;right:-40px;top:-60px;width:260px;height:260px;
  background:radial-gradient(circle at center,rgba(14,124,102,.12),rgba(14,124,102,0) 68%);
  pointer-events:none;
}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ng-ink-3);margin-bottom:14px;
}
.crumb a{color:var(--ng-ink-3);}
.crumb a:hover{color:var(--ng-primary);text-decoration:underline;text-underline-offset:4px;}
.crumb .sep{color:var(--ng-ink-3);opacity:.6;}
.page-banner h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.24;font-weight:800;letter-spacing:-.02em;
  max-width:22em;
}
.page-banner .banner-lead{
  margin-top:14px;font-size:16px;line-height:1.85;color:var(--ng-ink-2);max-width:46em;
}

/* ============ 板块通用 ============ */
.section{padding:clamp(48px,6vw,72px) 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:26px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);line-height:1.28;font-weight:700;letter-spacing:-.01em;
  position:relative;padding-bottom:14px;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:48px;height:3px;border-radius:var(--r-pill);
  background:var(--ng-primary);
}
.section-head p{font-size:14.5px;color:var(--ng-ink-2);max-width:36em;}

/* ============ 案例横卡列表 ============ */
.case-list{display:flex;flex-direction:column;gap:24px;}
.case-card{
  position:relative;
  display:grid;grid-template-columns:320px 1fr;
  background:var(--ng-surface);
  border:1px solid var(--ng-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.case-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--ng-primary);z-index:2;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.case-media{position:relative;overflow:hidden;background:var(--ng-surface-2);}
.case-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .3s ease;}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(rgba(10,92,76,.06),rgba(10,92,76,.28));
}
.case-body{padding:clamp(20px,2.4vw,28px);display:flex;flex-direction:column;gap:12px;}
.case-body h3{font-size:20px;line-height:1.4;font-weight:650;}
.case-body p{font-size:14.5px;line-height:1.85;color:var(--ng-ink-2);}
.case-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:4px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ng-primary);
}
.link-more:hover{color:var(--ng-primary-deep);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.case-meta{font-size:12.5px;color:var(--ng-ink-3);}

/* ============ 数据条 ============ */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--ng-surface);
  border:1px solid var(--ng-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  margin-top:32px;
}
.stat{padding:22px 20px;position:relative;}
.stat + .stat::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;background:var(--ng-line);
}
.stat-num{
  font-size:clamp(24px,2.6vw,32px);font-weight:800;line-height:1.1;letter-spacing:-.02em;
  background:var(--ng-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:inline-block;
}
.stat-num em{font-style:normal;font-size:.62em;font-weight:700;margin-left:2px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--ng-ink-2);line-height:1.6;}

/* ============ 支持流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-item{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-md);
  padding:22px 20px;box-shadow:var(--sh-1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--ng-primary-soft);}
.flow-num{
  width:34px;height:34px;border-radius:50%;
  border:1.5px solid var(--ng-primary);color:var(--ng-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;margin-bottom:14px;
}
.flow-item h3{font-size:17px;font-weight:650;line-height:1.45;margin-bottom:8px;}
.flow-item p{font-size:14px;line-height:1.8;color:var(--ng-ink-2);}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:clamp(24px,4vw,48px);align-items:start;}
.faq-intro h2{font-size:clamp(22px,2.6vw,32px);line-height:1.28;font-weight:700;margin-bottom:12px;}
.faq-intro p{font-size:14.5px;color:var(--ng-ink-2);line-height:1.85;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--ng-surface);border:1px solid var(--ng-line);border-radius:var(--r-md);
  overflow:hidden;position:relative;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--ng-primary);
  opacity:0;transition:opacity .16s ease;
}
.faq-item.is-open{border-color:var(--ng-primary-soft);box-shadow:var(--sh-1);}
.faq-item.is-open::before{opacity:1;}
.faq-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--ng-ink);
  transition:color .16s ease;
}
.faq-head:hover{color:var(--ng-primary);}
.faq-item.is-open .faq-head{color:var(--ng-primary);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px;}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-body{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-body-inner{padding:0 20px 20px;font-size:14.5px;line-height:1.9;color:var(--ng-ink-2);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ng-grad);
  border-radius:var(--r-lg);
  padding:clamp(28px,4vw,44px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:overlay;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(21px,2.4vw,30px);line-height:1.3;font-weight:700;color:#fff;}
.cta-band p{margin-top:10px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.86);max-width:40em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:clamp(48px,6vw,80px);
  background:var(--ng-primary-deep);
  color:rgba(255,255,255,.86);
  padding:clamp(40px,5vw,64px) 0 0;
}
.footer-inner{padding-bottom:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);box-shadow:none;}
.footer-brand-name{font-size:15px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:rgba(255,255,255,.62);}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:30em;}
.footer-title{font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:36px;padding:18px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.58);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1030;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;border-radius:var(--r-pill);
  background:var(--ng-grad);color:#fff;
  font-size:14.5px;font-weight:650;
  box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease;
}
.float-cta:hover{color:#fff;filter:brightness(1.06);}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto;animation:breathe 2.4s ease-in-out infinite;}
@keyframes breathe{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}
.float-cta .fc-arrow{font-weight:700;}

/* ============ 抽屉遮罩 ============ */
.side-mask{
  display:none;position:fixed;inset:0;background:rgba(20,32,28,.45);z-index:1045;
  opacity:0;transition:opacity .2s ease;
}
.side-mask.is-open{display:block;opacity:1;}

/* ============ 平板 ============ */
@media (max-width:1199px) and (min-width:992px){
  :root{--side-w:216px;}
  .shell-side{padding:20px 12px;}
  .nav-item{padding:0 12px;font-size:14px;}
  .brand-sub{display:none;}
}
/* ============ 移动端 ============ */
@media (max-width:991px){
  .shell-topbar{display:flex;}
  .shell-side{
    width:272px;padding:20px 16px;
    transform:translateX(-100%);
    transition:transform .24s ease;
    z-index:1055;
    box-shadow:var(--sh-2);
  }
  .shell-side.is-open{transform:translateX(0);}
  .shell-main{margin-left:0;padding-top:72px;padding-bottom:96px;}
  .page-banner{margin-top:8px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3)::before,
  .stat:nth-child(2)::before{display:none;}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--ng-line);}
}
@media (max-width:767px){
  .case-card{grid-template-columns:1fr;}
  .case-media img{aspect-ratio:16/9;}
  .case-card::before{width:4px;}
  .flow-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-light{flex:1 1 100%;}
  .float-cta{
    left:12px;right:12px;bottom:12px;
    justify-content:space-between;border-radius:var(--r-lg);
    background:var(--ng-surface);color:var(--ng-ink);
    border:1px solid var(--ng-line);
    padding:10px 12px 10px 16px;
    animation:none!important;
  }
  .float-cta .fc-text{font-size:13.5px;color:var(--ng-ink-2);}
  .float-cta .fc-btn{
    display:inline-flex;align-items:center;justify-content:center;
    height:38px;padding:0 18px;border-radius:var(--r-pill);
    background:var(--ng-grad);color:#fff;font-size:13.5px;font-weight:650;
  }
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .page-banner h1{font-size:24px;}
}
@media (max-width:479px){
  .stats-band{grid-template-columns:1fr;}
  .stat + .stat::before{display:none;}
  .stat + .stat{border-top:1px solid var(--ng-line);}
}