/* roulang page: index */
:root{
  --bg-deep:#070E18;
  --bg:#0C1827;
  --panel:#12243A;
  --panel-2:#0F1F33;
  --brand:#2FD8B7;
  --brand-dark:#17B79A;
  --amber:#F2B441;
  --light:#F4F7FA;
  --white:#FFFFFF;
  --text:#E9F1F8;
  --text-dim:#9FB2C6;
  --text-weak:#6E8299;
  --ink:#0C1827;
  --ink-soft:#44566B;
  --line:rgba(255,255,255,.10);
  --line-light:#E2E8F0;
  --danger:#FF6B6B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --container:1200px;
  --nav-h:68px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(47,216,183,.3);color:#fff;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--light);color:var(--ink);}
.section-alt .section-title{color:var(--ink);}
.section-alt .section-desc{color:var(--ink-soft);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.section-tag{
  display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-alt .section-tag{color:var(--brand-dark);}
.section-title{font-size:clamp(22px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;}
.section-desc{margin-top:12px;color:var(--text-dim);max-width:640px;font-size:15px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;}
.text-link .arrow{transition:transform .22s ease;}
.text-link:hover .arrow{transform:translateX(3px);}
.section-alt .text-link{color:var(--brand-dark);}

/* header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(7,14,24,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.nav-inner{
  width:100%;max-width:1280px;margin:0 auto;padding:0 32px;
  display:flex;align-items:center;gap:24px;
}
.nav-left{width:55%;display:flex;align-items:center;gap:28px;min-width:0;}
.nav-right{width:45%;display:flex;align-items:center;justify-content:flex-end;gap:14px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#062018;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:var(--glow);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.logo-sub{font-size:11px;color:var(--text-weak);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:22px;min-width:0;}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-dim);white-space:nowrap;
  padding:8px 0;transition:color .22s ease,transform .22s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;box-shadow:0 0 12px rgba(47,216,183,.7);
}
.nav-links a:hover{color:var(--text);transform:translateY(-1px);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-search{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-dim);
  transition:border-color .22s ease,color .22s ease,background .22s ease;
}
.search-toggle:hover{border-color:rgba(47,216,183,.55);color:var(--brand);}
.search-field{
  position:absolute;right:48px;top:50%;transform:translateY(-50%) scaleX(.86);
  width:0;opacity:0;pointer-events:none;
  transition:width .28s ease,opacity .28s ease,transform .28s ease;
}
.nav-search.is-open .search-field{width:320px;opacity:1;pointer-events:auto;transform:translateY(-50%) scaleX(1);}
.search-field input{
  width:100%;height:40px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  padding:0 16px;color:var(--text);font-size:14px;outline:none;
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-field input::placeholder{color:var(--text-weak);}
.search-field input:focus{border-color:var(--brand);box-shadow:var(--glow);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-size:14px;font-weight:600;
  padding:12px 24px;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease,opacity .2s ease;
}
.btn-primary{background:var(--brand);color:#062018;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(47,216,183,.5);filter:brightness(1.04);}
.btn-primary:active{transform:scale(.98);}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;}
.btn-ghost{border-color:rgba(255,255,255,.28);color:var(--text);background:transparent;}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.6);transform:translateY(-2px);}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{padding:9px 18px;font-size:13px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(47,216,183,.55);color:var(--brand);}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,14,24,.6);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:96;
  transform:translateX(100%);transition:transform .34s cubic-bezier(.4,0,.2,1);
  background:rgba(12,24,39,.92);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid var(--line);
  padding:20px 22px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text);
}
.drawer-close:hover{border-color:rgba(47,216,183,.55);color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  padding:13px 12px;border-radius:var(--r-md);font-size:15px;color:var(--text-dim);
  border-left:2px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.drawer-nav a:hover{background:rgba(255,255,255,.06);color:var(--text);}
.drawer-nav a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(47,216,183,.08);}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-md);background:rgba(255,255,255,.06);
  border:1px solid var(--line);padding:0 14px;font-size:14px;outline:none;margin-bottom:16px;
}
.drawer-search input:focus{border-color:var(--brand);box-shadow:var(--glow);}
.drawer-meta{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-weak);line-height:2;}

/* hero */
.hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 48px) 0 88px;
  min-height:78vh;
  display:flex;align-items:center;
  background:
    radial-gradient(900px 520px at 78% 18%,rgba(47,216,183,.16),transparent 62%),
    radial-gradient(700px 460px at 12% 88%,rgba(242,180,65,.08),transparent 60%),
    linear-gradient(180deg,#070E18 0%,#0C1827 58%,#0C1827 100%);
}
.hero-inner{
  width:100%;max-width:1280px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:55% 45%;gap:32px;align-items:center;
}
.hero-left{padding-right:40px;min-width:0;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);
  background:rgba(47,216,183,.10);border:1px solid rgba(47,216,183,.28);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:22px;letter-spacing:.04em;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);}
.hero h1{
  font-size:clamp(28px,4.2vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.22;
  max-width:640px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  margin-top:20px;font-size:clamp(15px,1.5vw,17px);color:var(--text-dim);
  max-width:520px;line-height:1.85;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:44px;
  border-top:1px solid var(--line);padding-top:24px;
}
.hero-metrics li{
  padding:0 24px;font-size:13px;color:var(--text-weak);line-height:1.7;
}
.hero-metrics li:first-child{padding-left:0;}
.hero-metrics li+li{border-left:1px solid var(--line);}
.hero-metrics b{display:block;font-size:19px;color:var(--text);font-weight:700;font-variant-numeric:tabular-nums;}
.hero-metrics b span{color:var(--amber);font-size:13px;margin-left:2px;}
.hero-right{position:relative;min-width:0;}
.hero-visual{
  position:relative;border-radius:var(--r-xl);overflow:visible;
}
.hero-visual::before{
  content:"";position:absolute;inset:-10px;border-radius:26px;
  border:1px solid rgba(47,216,183,.28);
  box-shadow:0 0 40px rgba(47,216,183,.18) inset;pointer-events:none;
}
.hero-visual img.hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);
  box-shadow:var(--sh-lg);
}
.hero-visual::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:60%;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  background:linear-gradient(180deg,transparent,rgba(7,14,24,.75));pointer-events:none;
}
.glass{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.stat-float{
  position:absolute;border-radius:var(--r-lg);padding:14px 18px;z-index:3;
  min-width:132px;
}
.stat-float .num{font-size:22px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;}
.stat-float .lbl{font-size:12px;color:var(--text-dim);margin-top:2px;}
.stat-float.one{left:-22px;top:34px;}
.stat-float.two{right:-16px;bottom:96px;}
.hero-thumb{
  position:absolute;right:18px;bottom:-26px;width:132px;border-radius:var(--r-md);
  border:2px solid rgba(255,255,255,.18);box-shadow:var(--sh-md);z-index:4;
  aspect-ratio:4/3;object-fit:cover;
}

/* services */
.svc-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch;}
.svc-main{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-sm);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.svc-main:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.3);box-shadow:var(--sh-md);}
.svc-main-img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.svc-main-body{padding:28px 30px 32px;}
.svc-side{display:grid;grid-template-rows:1fr 1fr;gap:28px;}
.svc-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;display:flex;flex-direction:column;gap:10px;
  box-shadow:var(--sh-sm);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.svc-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.3);box-shadow:var(--sh-md);}
.svc-index{
  font-size:13px;font-weight:700;color:var(--amber);letter-spacing:.12em;
  font-variant-numeric:tabular-nums;
}
.svc-card h3,.svc-main h3{font-size:19px;font-weight:600;}
.svc-card p,.svc-main p{font-size:14.5px;color:var(--text-dim);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.svc-main p{-webkit-line-clamp:3;}
.svc-card .text-link{margin-top:auto;}

/* stats band */
.stats-band{
  background:var(--light);color:var(--ink);padding:88px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-block{
  padding:28px 24px;border-radius:var(--r-lg);background:var(--white);
  border:1px solid var(--line-light);
  box-shadow:0 2px 10px rgba(12,24,39,.05);
  transition:transform .28s ease,box-shadow .28s ease;
}
.stat-block:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(12,24,39,.10);}
.stat-num{
  font-size:clamp(34px,4vw,48px);font-weight:800;color:var(--ink);line-height:1;
  font-variant-numeric:tabular-nums;
  border-bottom:3px solid var(--brand);display:inline-block;padding-bottom:8px;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--ink-soft);margin-left:4px;}
.stat-lbl{margin-top:14px;font-size:14px;color:var(--ink-soft);}

/* cases */
.case-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.case-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-sm);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.3);box-shadow:var(--sh-md);}
.case-cover{overflow:hidden;}
.case-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.case-card:hover .case-cover img{transform:scale(1.03);}
.case-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:12px;}
.case-card.tall .case-cover img{aspect-ratio:4/3;}
.case-wide{grid-column:1 / -1;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;}
.case-wide .case-cover img{aspect-ratio:16/10;height:100%;}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  font-size:12px;padding:4px 12px;border:1px solid transparent;font-weight:600;line-height:1.6;
  width:fit-content;
}
.badge-brand{color:var(--brand);background:rgba(47,216,183,.10);border-color:rgba(47,216,183,.3);}
.badge-amber{color:var(--amber);background:rgba(242,180,65,.10);border-color:rgba(242,180,65,.3);}
.badge-ghost{color:var(--text-dim);background:rgba(255,255,255,.05);border-color:var(--line);}
.case-body h3{font-size:19px;font-weight:600;}
.case-body p{font-size:14.5px;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* flow */
.flow-wrap{position:relative;padding-top:12px;}
.flow-line{
  position:absolute;left:0;right:0;top:26px;height:0;
  border-top:1px dashed rgba(47,216,183,.35);
}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.flow-step{position:relative;padding-top:62px;}
.flow-step::before{
  content:"";position:absolute;left:0;top:19px;width:15px;height:15px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 5px rgba(47,216,183,.16),0 0 18px rgba(47,216,183,.7);
}
.flow-step .step-no{
  font-size:12px;color:var(--amber);letter-spacing:.16em;font-weight:700;display:block;margin-bottom:8px;
}
.flow-step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--text-dim);}

/* news */
.news-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start;}
.news-lead{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-sm);display:flex;flex-direction:column;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.news-lead:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.3);box-shadow:var(--sh-md);}
.news-lead-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-lead-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:12px;}
.news-lead-body h3{font-size:20px;font-weight:600;}
.news-lead-body h3 a:hover{color:var(--brand);}
.news-lead-body p{font-size:14.5px;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-weak);}
.news-meta time{font-variant-numeric:tabular-nums;}
.news-list{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 24px;box-shadow:var(--sh-sm);
}
.news-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:16px;align-items:center;
  min-height:64px;padding:16px 0;border-bottom:1px solid var(--line);
}
.news-item:last-child{border-bottom:none;}
.news-item time{font-size:13px;color:var(--text-weak);font-variant-numeric:tabular-nums;}
.news-item h4{font-size:15px;font-weight:600;line-height:1.6;}
.news-item h4 a{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-item h4 a:hover{color:var(--brand);}
.news-item .news-sum{font-size:13px;color:var(--text-weak);margin-top:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.news-list-foot{display:flex;justify-content:center;padding:28px 0 4px;}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;border:1px dashed var(--line);border-radius:var(--r-lg);
  background:var(--panel-2);color:var(--text-weak);text-align:center;padding:32px;
}
.empty-state svg{opacity:.6;}
.empty-state .text-link{margin-top:2px;}

/* faq */
.faq-wrap{
  border-radius:var(--r-lg);overflow:hidden;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);
  transition:color .22s ease,background .22s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-no{font-size:13px;color:var(--text-weak);font-variant-numeric:tabular-nums;flex-shrink:0;width:26px;}
.faq-q .q-text{flex:1;}
.faq-icon{
  position:relative;width:16px;height:16px;flex-shrink:0;
  transition:transform .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:opacity .2s ease,transform .2s ease;
}
.faq-icon::before{left:0;right:0;top:7px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 24px 22px 66px;font-size:14.5px;color:var(--text-dim);line-height:1.9;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--brand);}

/* contact */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:18px;}
.contact-list li{display:flex;gap:14px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft);}
.contact-ico{
  width:36px;height:36px;border-radius:var(--r-md);flex-shrink:0;
  background:rgba(47,216,183,.12);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
}
.contact-list b{display:block;color:var(--ink);font-size:14px;font-weight:600;margin-bottom:2px;}
.form-card{
  background:var(--white);border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:32px;box-shadow:0 18px 40px rgba(12,24,39,.08);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:18px;}
.field label{font-size:13.5px;color:var(--ink);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;border-radius:var(--r-md);border:1px solid var(--line-light);
  background:#F8FAFC;padding:12px 14px;font-size:14.5px;color:var(--ink);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.8;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(47,216,183,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);background:#FFF6F6;
}
.field .err{font-size:12.5px;color:var(--danger);display:none;}
.field.has-error .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-soft);margin:4px 0 20px;}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);}
.form-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-msg{font-size:13.5px;color:var(--brand-dark);display:none;}
.form-msg.is-visible{display:block;}

/* cta band */
.cta-band{
  background:linear-gradient(120deg,#0F1F33 0%,#12243A 100%);
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:48px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;position:relative;}
.cta-band p{margin-top:10px;color:var(--text-dim);font-size:14.5px;position:relative;max-width:560px;}
.cta-band .btn{position:relative;flex-shrink:0;}

/* footer */
.site-footer{
  background:var(--bg-deep);position:relative;padding:72px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(47,216,183,0));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-dim);max-width:320px;line-height:1.9;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-dim);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-col li{font-size:14px;color:var(--text-dim);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-weak);
}
.footer-bottom .sep{opacity:.5;}

@media (max-width:1279px){
  .hero-inner{grid-template-columns:58% 42%;}
  .nav-left{width:58%;}
  .nav-right{width:42%;}
  .stat-float.one{left:-10px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-inner{padding:0 24px;}
  .nav-left{width:auto;flex:1;}
  .nav-right{width:auto;flex:0 0 auto;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding:calc(var(--nav-h) + 40px) 0 64px;min-height:auto;}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:0 24px;}
  .hero-left{padding-right:0;}
  .hero-right{max-width:560px;}
  .svc-layout{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .case-layout{grid-template-columns:1fr;}
  .case-wide{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:repeat(2,1fr);row-gap:40px;}
  .flow-line{display:none;}
  .news-grid{grid-template-columns:1fr;}
  .contact-layout{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .hero-inner{padding:0 16px;}
  .hero-metrics li{padding:0 16px;}
  .hero-metrics li:first-child{padding-left:0;}
  .hero-thumb{width:104px;right:10px;bottom:-18px;}
  .stat-float{padding:10px 14px;min-width:112px;}
  .stat-float .num{font-size:18px;}
  .stat-float.two{bottom:60px;right:-8px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .news-item{grid-template-columns:1fr auto;gap:10px;}
  .news-item time{grid-column:1 / -1;font-size:12px;}
  .faq-q{padding:16px 18px;font-size:15.5px;gap:12px;}
  .faq-a-inner{padding:0 18px 18px 46px;}
  .form-card{padding:22px;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-block{padding:20px 16px;}
  .flow-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .hero-metrics{flex-direction:column;align-items:flex-start;gap:14px;}
  .hero-metrics li{padding:0;border-left:none!important;}
  .badge{font-size:11.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .svc-main:hover,.svc-card:hover,.case-card:hover,.news-lead:hover,.stat-block:hover{transform:none;}
  .case-card:hover .case-cover img{transform:none;}
}

/* roulang page: article */
:root{
  --bg-deepest:#070E18;
  --bg-main:#0C1827;
  --bg-panel:#12243A;
  --brand:#2FD8B7;
  --brand-deep:#17B79A;
  --amber:#F2B441;
  --light-bg:#F4F7FA;
  --light-title:#0C1827;
  --light-text:#44566B;
  --text-main:#E9F1F8;
  --text-sub:#9FB2C6;
  --text-weak:#6E8299;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.14);
  --line-light:#E2E8F0;
  --r8:8px;--r12:12px;--r16:16px;--r20:20px;--r999:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --nav-h:68px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:var(--font-cn);
  font-size:16px;line-height:1.9;
  color:var(--text-main);
  background:var(--bg-main);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
body.no-scroll{overflow:hidden}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--brand);font-weight:600}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:inline-block}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(12,24,39,.82);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.nav-inner{
  width:100%;max-width:1280px;margin:0 auto;padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:.5px;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 6px 18px rgba(47,216,183,.28);
  font-variant-numeric:tabular-nums;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:15px;font-weight:700;letter-spacing:.3px;color:var(--text-main)}
.logo-sub{font-size:11px;letter-spacing:2.4px;color:var(--text-weak)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-sub);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);opacity:0;transform:scaleX(.4);transform-origin:left;
  transition:opacity .22s ease,transform .22s ease;
}
.nav-links a:hover{color:var(--text-main);transform:translateY(-1px)}
.nav-links a:hover::after{opacity:.6;transform:scaleX(1)}
.nav-links a.is-active{color:#fff;font-weight:600}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 10px rgba(47,216,183,.65)}
.nav-search{display:flex;align-items:center;gap:8px}
.search-toggle{
  width:38px;height:38px;border-radius:var(--r999);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  display:grid;place-items:center;cursor:pointer;color:var(--text-sub);
  transition:color .2s,border-color .2s,background .2s;
}
.search-toggle:hover{color:var(--brand);border-color:rgba(47,216,183,.45)}
.search-field{width:0;overflow:hidden;transition:width .3s ease}
.nav-search.open .search-field{width:240px}
.search-field input{
  width:100%;height:38px;border-radius:var(--r999);
  border:1px solid var(--line);background:rgba(255,255,255,.06);
  padding:0 16px;font-size:14px;color:var(--text-main);outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.search-field input::placeholder{color:var(--text-weak)}
.search-field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,216,183,.18)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-main);cursor:pointer;place-items:center;
}
.nav-toggle:hover{border-color:rgba(47,216,183,.45);color:var(--brand)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,14,24,.6);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:120;
  padding:22px 22px 34px;overflow-y:auto;
  background:rgba(12,24,39,.94);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid var(--line-strong);
  transform:translateX(101%);transition:transform .32s cubic-bezier(.4,.1,.2,1);
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text-main);cursor:pointer;
  display:grid;place-items:center;
}
.drawer-close:hover{color:var(--brand);border-color:rgba(47,216,183,.45)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px}
.drawer-nav a{
  font-size:15px;color:var(--text-sub);padding:13px 12px;border-radius:var(--r12);
  border-bottom:1px solid var(--line);transition:background .2s,color .2s;
}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--text-main)}
.drawer-nav a.is-active{color:var(--brand);font-weight:600}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r999);border:1px solid var(--line);
  background:rgba(255,255,255,.06);padding:0 16px;font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,216,183,.18)}
.drawer-info{margin-top:22px;font-size:13px;color:var(--text-weak);line-height:2}
.drawer-info a{color:var(--text-sub)}
.drawer-info a:hover{color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r999);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121A;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(47,216,183,.5)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  border-color:rgba(255,255,255,.22);color:var(--text-main);background:rgba(255,255,255,.03);
}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.5);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600}
.arrow-link svg{transition:transform .22s ease}
.arrow-link:hover svg{transform:translateX(3px)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 52px) 0 96px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,14,24,.94) 0%,rgba(12,24,39,.88) 55%,rgba(12,24,39,.98) 100%);
}
.article-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.20),transparent 65%);pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);margin-bottom:20px}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--text-sub);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(26px,3.6vw,42px);font-weight:800;line-height:1.3;letter-spacing:-.3px;
  color:#fff;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:13px;color:var(--text-sub)}
.meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-item svg{color:var(--brand);flex-shrink:0}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r999);
  font-size:12px;font-weight:600;letter-spacing:.4px;border:1px solid rgba(47,216,183,.36);
  background:rgba(47,216,183,.12);color:var(--brand);
}
.badge-amber{border-color:rgba(242,180,65,.4);background:rgba(242,180,65,.12);color:var(--amber)}

/* ---------- 正文区 ---------- */
.article-section{background:var(--light-bg);padding:0 0 88px}
.article-cover{
  position:relative;z-index:3;max-width:900px;margin:-64px auto 0;
  border-radius:var(--r16);overflow:hidden;border:1px solid var(--line-light);
  box-shadow:0 24px 56px rgba(12,24,39,.22);background:#fff;
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-wrap{max-width:880px;margin:0 auto}
.article-card{
  margin-top:44px;background:#fff;border:1px solid var(--line-light);
  border-radius:var(--r16);padding:48px;
  box-shadow:0 12px 32px rgba(12,24,39,.08);
}
.article-body{color:var(--light-text);font-size:16px;line-height:1.95}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;color:var(--light-title);font-size:24px;font-weight:700;line-height:1.4;
  margin:1.6em 0 .7em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.article-body h3{
  position:relative;color:var(--light-title);font-size:19px;font-weight:600;line-height:1.5;
  margin:1.4em 0 .6em;padding-left:12px;
}
.article-body h3::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:2px;border-radius:2px;background:var(--brand)}
.article-body h4{color:var(--light-title);font-size:16px;font-weight:600;margin:1.2em 0 .5em}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#0F9E85;font-weight:600}
.article-body strong{color:var(--light-title);font-weight:700}
.article-body ul{list-style:none;margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);
}
.article-body ol{counter-reset:item;list-style:none;margin:0 0 1.2em;padding:0}
.article-body ol li{counter-increment:item;position:relative;padding-left:36px;margin-bottom:.55em}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;width:23px;height:23px;border-radius:var(--r999);
  display:grid;place-items:center;font-size:12px;font-weight:700;
  background:rgba(47,216,183,.14);color:var(--brand-deep);
}
.article-body blockquote{
  margin:1.4em 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:rgba(47,216,183,.06);border-radius:0 var(--r12) var(--r12) 0;color:#3A4C5E;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r12);margin:1.4em 0}
.article-body figure{margin:1.4em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-weak);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14px;border-top:1px solid var(--brand)}
.article-body th{
  background:rgba(47,216,183,.10);color:var(--light-title);font-weight:600;
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--line-light);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-light);color:var(--light-text)}
.article-body tr:nth-child(even) td{background:#FAFCFE}
.article-body code{background:#EFF3F7;padding:2px 6px;border-radius:6px;font-size:14px;color:#0F3B33}
.article-body hr{border:0;border-top:1px solid var(--line-light);margin:2em 0}
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line-light);border-radius:var(--r16);background:#FBFDFF;
}
.empty-state svg{color:var(--brand-deep);margin-bottom:16px}
.empty-state h3{color:var(--light-title);font-size:20px;margin-bottom:10px;padding:0}
.empty-state h3::before{display:none}
.empty-state p{color:var(--light-text);font-size:14px;margin-bottom:22px}
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:32px;padding-top:24px;border-top:1px solid var(--line-light);
}
.article-foot .tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r999);
  font-size:12px;color:#2E4256;background:#F1F5F9;border:1px solid var(--line-light);
}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-deep);font-weight:600}
.back-link svg{transition:transform .22s ease}
.back-link:hover svg{transform:translateX(-3px)}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;background:var(--bg-deepest);padding:72px 0}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(47,216,183,.9),transparent);
}
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:38px 40px;border-radius:var(--r20);
  background:rgba(255,255,255,.06);border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-md);
}
.cta-card h2{font-size:clamp(20px,2.3vw,28px);font-weight:700;line-height:1.4;margin-bottom:8px}
.cta-card p{font-size:14px;color:var(--text-sub)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 频道推荐 ---------- */
.channel-band{background:var(--bg-main);padding:80px 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.section-head p{font-size:14px;color:var(--text-sub);margin-top:8px}
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.channel-card{
  display:block;background:#0F1F33;border:1px solid var(--line);border-radius:var(--r16);
  padding:26px 22px;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.channel-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.32);box-shadow:var(--sh-md)}
.channel-card h3{font-size:17px;font-weight:600;margin-bottom:10px}
.channel-card p{font-size:13px;color:var(--text-sub);line-height:1.85;margin-bottom:16px}
.channel-card .arrow-link{font-size:13px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-deepest);padding:64px 0 28px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(47,216,183,.85),rgba(47,216,183,0));
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--text-sub);line-height:1.95;max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.5px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{font-size:13.5px;color:var(--text-sub);margin-bottom:11px;line-height:1.7}
.footer-col a{display:inline-block;color:var(--text-sub)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-weak);
}
.footer-bottom .sep{color:rgba(255,255,255,.18)}

/* 返回顶部 */
.to-top{
  position:fixed;right:16px;bottom:16px;z-index:90;
  width:56px;height:56px;border-radius:var(--r999);
  display:grid;place-items:center;cursor:pointer;
  color:var(--text-main);border:1px solid var(--line-strong);
  background:rgba(18,36,58,.7);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,visibility .28s ease,transform .28s ease,color .2s,border-color .2s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--brand);border-color:rgba(47,216,183,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .nav-inner{padding:0 28px}
  .nav-left{gap:24px}
  .nav-links{gap:18px}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-inner{padding:0 24px}
  .container{padding:0 24px}
  .article-hero{padding-top:calc(var(--nav-h) + 40px);padding-bottom:80px}
  .article-card{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{padding:56px 0 26px}
}
@media (max-width:767px){
  :root{--nav-h:60px}
  body{font-size:15px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;gap:12px}
  .nav-search{display:none}
  .logo-mark{width:34px;height:34px;border-radius:10px;font-size:13px}
  .logo-main{font-size:14px}
  .logo-sub{font-size:10px;letter-spacing:2px}
  .article-hero{padding-top:calc(var(--nav-h) + 32px);padding-bottom:68px}
  .breadcrumb .current{max-width:180px}
  .article-cover{margin-top:-40px;border-radius:var(--r12)}
  .article-section{padding-bottom:64px}
  .article-card{padding:22px 18px;border-radius:var(--r12)}
  .article-body{font-size:15px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-body th,.article-body td{white-space:normal}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-band{padding:56px 0}
  .cta-card{padding:26px 22px;border-radius:var(--r16)}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .channel-band{padding:56px 0 68px}
  .channel-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .to-top{width:50px;height:50px;right:14px;bottom:14px}
}
@media (max-width:480px){
  body{font-size:14.5px}
  .article-hero h1{font-size:24px}
  .meta-row{font-size:12px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .search-field{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .channel-card:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070E18;
  --bg:#0C1827;
  --panel:#12243A;
  --panel-2:#0F1F33;
  --brand:#2FD8B7;
  --brand-press:#17B79A;
  --amber:#F2B441;
  --light:#F4F7FA;
  --light-title:#0C1827;
  --light-text:#44566B;
  --light-line:#E2E8F0;
  --text:#E9F1F8;
  --text-2:#9FB2C6;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r8:8px; --r12:12px; --r16:16px; --r20:20px; --rpill:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --nav-h:68px;
  --max:1200px;
  --pad:32px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease,transform .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(47,216,183,.3);color:#fff;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad);}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-light{background:var(--light);color:var(--light-text);}
.section-light h2,.section-light h3{color:var(--light-title);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block;border-radius:2px;}
.section-light .eyebrow{color:var(--brand-press);}
.section-light .eyebrow::before{background:var(--brand-press);}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
.section-head p{margin-top:12px;color:var(--text-2);max-width:620px;font-size:15px;}
.section-light .section-head p{color:var(--light-text);}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;white-space:nowrap;}
.link-more svg{transition:transform .2s ease;}
.link-more:hover svg{transform:translateX(3px);}
.section-light .link-more{color:var(--brand-press);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--rpill);font-weight:600;font-size:15px;
  padding:13px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease,opacity .2s ease;
  will-change:transform;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#04231C;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(47,216,183,.5);background:#39E3C3;}
.btn-primary:active{transform:scale(.98);}
.btn-primary:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:rgba(255,255,255,.04);}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.55);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:scale(.98);}
.btn-light{background:#fff;color:var(--light-title);box-shadow:var(--sh-sm);}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--rpill);padding:4px 12px;font-size:12px;font-weight:600;
  border:1px solid rgba(47,216,183,.38);background:rgba(47,216,183,.10);color:var(--brand);
  line-height:1.6;white-space:nowrap;
}
.badge-amber{border-color:rgba(242,180,65,.38);background:rgba(242,180,65,.10);color:var(--amber);}
.badge-muted{border-color:var(--line-strong);background:rgba(255,255,255,.05);color:var(--text-2);}
.section-light .badge{color:var(--brand-press);border-color:rgba(23,183,154,.35);background:rgba(23,183,154,.08);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--nav-h);
  background:transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,14,24,.78);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.nav-inner{
  height:100%;max-width:1280px;margin:0 auto;padding:0 var(--pad);
  display:grid;grid-template-columns:55% 45%;align-items:center;gap:16px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,216,183,.9),rgba(23,183,154,.55));
  color:#04231C;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(47,216,183,.32);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:16px;font-weight:800;color:var(--text);white-space:nowrap;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.22em;}
.logo:hover .logo-main{color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:4px;min-width:0;}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-2);padding:8px 12px;border-radius:var(--r8);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);opacity:0;transform:scaleX(.4);transition:opacity .22s ease,transform .22s ease;
  box-shadow:0 0 10px rgba(47,216,183,.7);
}
.nav-links a:hover{color:var(--text);transform:translateY(-1px);}
.nav-links a:hover::after{opacity:.5;transform:scaleX(1);}
.nav-links a.is-active{color:#fff;font-weight:600;}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);}

.nav-search{display:flex;align-items:center;position:relative;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--rpill);display:grid;place-items:center;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.search-toggle:hover{color:var(--brand);border-color:rgba(47,216,183,.5);}
.search-field{
  width:0;opacity:0;overflow:hidden;transition:width .3s ease,opacity .3s ease,margin .3s ease;
}
.nav-search.is-open .search-field{width:320px;opacity:1;margin-left:10px;}
.search-field input{
  width:100%;height:40px;border-radius:var(--rpill);
  background:rgba(255,255,255,.06);border:1px solid var(--line-strong);
  padding:0 16px;font-size:14px;color:var(--text);outline:none;
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,216,183,.15);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r12);
  border:1px solid var(--line);color:var(--text);place-items:center;
  background:rgba(255,255,255,.04);
}
.nav-toggle:hover{border-color:rgba(47,216,183,.5);color:var(--brand);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,14,24,.6);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:400px;z-index:90;
  background:rgba(12,24,39,.92);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid var(--line-strong);
  transform:translateX(102%);
  transition:transform .32s cubic-bezier(.22,.7,.3,1);
  padding:22px 20px 32px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r12);display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text);
}
.drawer-close:hover{border-color:rgba(47,216,183,.5);color:var(--brand);}
.drawer nav{display:flex;flex-direction:column;gap:2px;}
.drawer nav a{
  padding:14px 12px;border-radius:var(--r12);color:var(--text-2);font-size:15px;
  border-bottom:1px solid var(--line);
}
.drawer nav a:hover,.drawer nav a.is-active{color:var(--brand);background:rgba(47,216,183,.08);}
.drawer .drawer-search input{
  width:100%;height:44px;border-radius:var(--rpill);padding:0 18px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-strong);outline:none;font-size:14px;
}
.drawer .drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,216,183,.15);}
.drawer-contact{font-size:13px;color:var(--text-3);line-height:2;}
.drawer-contact strong{display:block;color:var(--text-2);font-size:13px;font-weight:600;margin-bottom:4px;}

/* ---------- 分类 Hero ---------- */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 72px) 0 84px;
  background:
    linear-gradient(180deg,rgba(7,14,24,.82),rgba(12,24,39,.94)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.22),transparent 62%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--text-3);}
.breadcrumb .current{color:var(--brand);}
.page-hero h1{
  font-size:clamp(28px,4.2vw,50px);font-weight:800;line-height:1.25;max-width:820px;
}
.page-hero .lede{
  margin-top:18px;font-size:17px;color:var(--text-2);max-width:640px;
}
.page-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  border:1px solid var(--line-strong);border-radius:var(--r16);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
}
.hero-metrics .metric{
  flex:1 1 200px;padding:20px 24px;border-right:1px solid var(--line);
}
.hero-metrics .metric:last-child{border-right:0;}
.metric .num{
  font-size:30px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
.metric .num em{font-style:normal;font-size:13px;color:var(--amber);font-weight:600;}
.metric .label{font-size:13px;color:var(--text-2);margin-top:2px;}

/* ---------- 图文交替 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--line);
}
.feature-row:last-child{border-bottom:0;}
.feature-row.is-reverse .feature-media{order:-1;}
.feature-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--amber);margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.feature-body h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:14px;}
.feature-body p{color:var(--text-2);font-size:15.5px;max-width:620px;}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text);}
.point-list li::before{
  content:"";width:9px;height:9px;border-radius:3px;background:var(--brand);
  flex-shrink:0;margin-top:10px;box-shadow:0 0 10px rgba(47,216,183,.6);
}
.feature-media{position:relative;border-radius:var(--r20);overflow:hidden;border:1px solid var(--line-strong);background:var(--panel-2);box-shadow:var(--sh-md);}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease;}
.feature-media:hover img{transform:scale(1.03);}
.feature-media .media-tag{
  position:absolute;left:16px;bottom:16px;
  padding:6px 14px;border-radius:var(--rpill);font-size:12px;font-weight:600;
  background:rgba(7,14,24,.72);border:1px solid var(--line-strong);color:var(--text);
  backdrop-filter:blur(8px);
}

/* ---------- 标签墙 ---------- */
.tag-wall{display:flex;flex-wrap:wrap;gap:12px;}
.tag-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--rpill);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.05);
  font-size:14px;color:var(--text-2);cursor:pointer;transition:all .22s ease;
}
.tag-item:hover,.tag-item.is-on{color:#fff;border-color:rgba(47,216,183,.6);background:rgba(47,216,183,.12);transform:translateY(-2px);}
.tag-item .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* ---------- 统计带 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:#fff;border:1px solid var(--light-line);border-radius:var(--r16);
  padding:28px 24px;box-shadow:var(--sh-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:rgba(47,216,183,.5);}
.stat-card .stat-num{
  font-size:44px;font-weight:800;color:var(--light-title);line-height:1.1;
  font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:6px;
}
.stat-card .stat-num em{font-style:normal;font-size:15px;color:var(--brand-press);font-weight:700;}
.stat-card .stat-bar{width:40px;height:3px;border-radius:3px;background:var(--brand);margin:14px 0 12px;}
.stat-card .stat-label{font-size:14px;color:var(--light-text);}

/* ---------- FAQ ---------- */
.faq-wrap{
  border-radius:var(--r20);border:1px solid var(--line-strong);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:18px;text-align:left;
  padding:22px 26px;color:var(--text);font-size:17px;font-weight:600;
  transition:color .2s ease,background .2s ease;position:relative;
}
.faq-q:hover{color:var(--brand);background:rgba(47,216,183,.05);}
.faq-q .idx{font-size:13px;color:var(--amber);font-variant-numeric:tabular-nums;font-weight:700;flex-shrink:0;width:26px;}
.faq-q .q-text{flex:1;}
.faq-q .sign{
  width:24px;height:24px;flex-shrink:0;position:relative;border-radius:50%;
  border:1px solid var(--line-strong);transition:border-color .2s ease,background .2s ease;
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s ease,background .2s ease,opacity .2s ease;
}
.faq-q .sign::before{width:11px;height:1.6px;}
.faq-q .sign::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
  box-shadow:0 0 12px rgba(47,216,183,.7);
}
.faq-item.is-open .faq-q .sign{border-color:var(--brand);background:rgba(47,216,183,.14);}
.faq-item.is-open .faq-q .sign::before{background:var(--brand);}
.faq-item.is-open .faq-q .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;background:var(--brand);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 26px 24px 70px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r20);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(12,24,39,.94),rgba(18,36,58,.9)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding:56px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  box-shadow:var(--sh-lg);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.24),transparent 65%);pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;position:relative;z-index:2;}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:520px;position:relative;z-index:2;}
.cta-band .hero-actions{margin-top:0;position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:2px solid transparent;
  border-image:linear-gradient(90deg,rgba(47,216,183,.9),rgba(47,216,183,0)) 1;
  padding:72px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-3);line-height:1.9;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--text);font-weight:600;margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li,.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);display:inline-block;}
.footer-bottom{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0 28px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .sep{color:rgba(255,255,255,.18);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--pad:28px;}
  .nav-inner{grid-template-columns:58% 42%;}
  .nav-links a{font-size:13.5px;padding:8px 10px;}
}
@media (max-width:1023px){
  :root{--pad:24px;}
  .nav-inner{grid-template-columns:1fr auto;}
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .nav-search .search-field{display:none;}
  .feature-row{gap:36px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .site-header .btn-primary.btn-sm{display:none;}
}
@media (max-width:767px){
  :root{--pad:16px;--nav-h:60px;}
  body{font-size:15px;line-height:1.85;}
  .section{padding:64px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px;}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 56px;}
  .page-hero .lede{font-size:15.5px;}
  .hero-metrics .metric{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);}
  .hero-metrics .metric:last-child{border-bottom:0;}
  .feature-row{grid-template-columns:1fr;gap:24px;padding:40px 0;}
  .feature-row.is-reverse .feature-media{order:0;}
  .point-list li{font-size:14.5px;}
  .cta-band{padding:36px 24px;border-radius:var(--r16);}
  .faq-q{padding:18px 16px;font-size:15.5px;gap:12px;}
  .faq-a p{padding:0 16px 20px 42px;}
  .stat-card{padding:22px 18px;}
  .stat-card .stat-num{font-size:36px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
}
@media (max-width:479px){
  .nav-inner{gap:8px;}
  .logo-main{font-size:15px;}
  .logo-sub{display:none;}
  .nav-right{gap:8px;}
  .page-hero h1{font-size:clamp(24px,7vw,30px);}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stat-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .btn:hover,.stat-card:hover,.tag-item:hover,.feature-media:hover img{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070E18;
  --bg:#0C1827;
  --panel:#12243A;
  --card:#0F1F33;
  --brand:#2FD8B7;
  --brand-deep:#17B79A;
  --amber:#F2B441;
  --light-bg:#F4F7FA;
  --light-title:#0C1827;
  --light-text:#44566B;
  --t1:#E9F1F8;
  --t2:#9FB2C6;
  --t3:#6E8299;
  --line:rgba(255,255,255,.10);
  --line-light:#E2E8F0;
  --err:#FF6B6B;
  --r8:8px;--r12:12px;--r16:16px;--r20:20px;--r999:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --nav-h:68px;
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#062018;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
main{display:block}
section{position:relative}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--nav-h);display:flex;align-items:center;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-stuck{
  background:rgba(7,14,24,.80);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.38);
}
.nav-inner{
  width:100%;max-width:1280px;margin:0 auto;padding:0 32px;
  display:flex;align-items:center;gap:24px;justify-content:space-between;
}
.nav-left{display:flex;align-items:center;gap:30px;flex:0 1 55%;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px;justify-content:flex-end;flex:0 1 45%}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04241D;font-weight:800;font-size:14px;letter-spacing:.04em;
  box-shadow:0 6px 18px rgba(47,216,183,.30);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:800;color:var(--t1);white-space:nowrap}
.logo-sub{font-size:11px;color:var(--t3);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--t2);
  padding:6px 0;white-space:nowrap;transition:color .2s ease,transform .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(47,216,183,0));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease,box-shadow .22s ease;
}
.nav-links a:hover{color:var(--t1);transform:translateY(-1px)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--t1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(47,216,183,.75)}
.nav-search{display:flex;align-items:center;gap:8px}
.search-toggle{
  width:38px;height:38px;border-radius:var(--r999);display:grid;place-items:center;
  color:var(--t2);border:1px solid var(--line);background:rgba(255,255,255,.05);
  transition:color .2s,border-color .2s,background .2s;
}
.search-toggle:hover{color:var(--brand);border-color:rgba(47,216,183,.5)}
.search-field{width:0;overflow:hidden;transition:width .28s ease}
.nav-search.is-open .search-field{width:300px}
.search-field input{
  width:100%;height:38px;border-radius:var(--r999);
  border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--t1);
  padding:0 16px;font-size:14px;transition:border-color .2s,box-shadow .2s;
}
.search-field input::placeholder{color:var(--t3)}
.search-field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,216,183,.18)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r999);font-weight:600;font-size:15px;padding:13px 26px;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#04231C;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(47,216,183,.5);filter:brightness(1.04)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{border-color:var(--line);background:rgba(255,255,255,.05);color:var(--t1)}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.55);transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r12);
  border:1px solid var(--line);color:var(--t1);background:rgba(255,255,255,.05);
  place-items:center;
}
.nav-toggle:hover{border-color:rgba(47,216,183,.5);color:var(--brand)}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,14,24,.6);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:380px;z-index:120;
  background:rgba(12,24,39,.94);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid var(--line);
  padding:18px 22px 32px;overflow-y:auto;display:flex;flex-direction:column;gap:20px;
  transform:translateX(102%);transition:transform .32s ease;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r12);display:grid;place-items:center;
  border:1px solid var(--line);color:var(--t1);background:rgba(255,255,255,.06);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(47,216,183,.5)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  padding:14px 4px;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--t2);
  transition:color .2s,padding-left .2s;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand);padding-left:8px}
.drawer-search input{
  width:100%;height:42px;border-radius:var(--r999);border:1px solid var(--line);
  background:rgba(255,255,255,.06);padding:0 16px;font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,216,183,.18)}
.drawer-contact{font-size:13.5px;color:var(--t3);line-height:2}

/* ---------- Category hero ---------- */
.cat-hero{
  padding:calc(var(--nav-h) + 76px) 0 84px;
  background:
    linear-gradient(120deg,rgba(7,14,24,.95) 0%,rgba(12,24,39,.86) 46%,rgba(12,24,39,.68) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.22) 0%,rgba(47,216,183,0) 68%);
  pointer-events:none;
}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);margin-bottom:22px}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:var(--t3);opacity:.6}
.crumb .now{color:var(--t2)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:var(--r999);
  font-size:12.5px;border:1px solid rgba(47,216,183,.36);background:rgba(47,216,183,.10);color:var(--brand);
}
.tag.amber{border-color:rgba(242,180,65,.4);background:rgba(242,180,65,.12);color:var(--amber)}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,48px);font-weight:800;max-width:900px;
  letter-spacing:-.01em;
}
.cat-hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:18px;font-size:clamp(16px,1.6vw,19px);color:var(--t2);max-width:760px}
.hero-meta{
  margin-top:34px;display:flex;flex-wrap:wrap;gap:28px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta .num{font-size:26px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-meta .lbl{font-size:13px;color:var(--t3)}

/* ---------- Lead ---------- */
.lead{padding:76px 0 0}
.lead-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:44px;align-items:start}
.lead h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:20px}
.lead p{color:var(--t2);font-size:16px;max-width:640px}
.lead p + p{margin-top:18px}
.lead-aside{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r16);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-md);
  padding:26px;
}
.lead-aside h3{font-size:17px;margin-bottom:16px;color:var(--t1)}
.lead-aside li{
  display:flex;gap:10px;padding:11px 0;font-size:14.5px;color:var(--t2);
  border-bottom:1px dashed var(--line);
}
.lead-aside li:last-child{border-bottom:0}
.lead-aside li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:2px;background:var(--brand);margin-top:10px;
}

/* ---------- Section base ---------- */
.sec{padding:96px 0}
.sec-light{background:var(--light-bg);color:var(--light-text)}
.sec-light h2,.sec-light h3{color:var(--light-title)}
.sec-head{margin-bottom:42px;max-width:760px}
.sec-eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;color:var(--brand);
  margin-bottom:12px;text-transform:uppercase;
}
.sec-light .sec-eyebrow{color:var(--brand-deep)}
.sec-head h2{font-size:clamp(22px,2.6vw,32px)}
.sec-head p{margin-top:16px;color:var(--t2);font-size:15.5px}
.sec-light .sec-head p{color:var(--light-text)}

/* ---------- Compare table ---------- */
.table-wrap{
  background:#fff;border-radius:var(--r16);overflow:hidden;
  box-shadow:0 18px 40px rgba(12,24,39,.12);
  border:1px solid var(--line-light);
}
table.cmp{width:100%;border-collapse:collapse;font-size:15px}
table.cmp thead th{
  background:rgba(47,216,183,.14);color:var(--light-title);
  text-align:left;font-weight:700;font-size:14px;letter-spacing:.03em;
  padding:18px 22px;border-bottom:1px solid rgba(47,216,183,.32);
  white-space:nowrap;
}
table.cmp tbody td{
  padding:18px 22px;border-bottom:1px solid var(--line-light);
  color:var(--light-text);vertical-align:top;line-height:1.8;
}
table.cmp tbody tr:nth-child(even){background:#F8FAFC}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody td:first-child{color:var(--light-title);font-weight:600}
table.cmp .cell-tag{
  display:inline-block;margin-top:6px;padding:2px 10px;border-radius:var(--r999);
  font-size:12px;background:rgba(242,180,65,.16);color:#9A6A05;border:1px solid rgba(242,180,65,.4);
}
.table-note{
  margin-top:20px;font-size:13px;color:#6E8299;line-height:1.9;
  padding-left:14px;border-left:3px solid rgba(47,216,183,.55);
}

/* ---------- Key cards ---------- */
.key-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:6px}
.key-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r16);
  box-shadow:var(--sh-md);padding:32px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.key-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.3);box-shadow:var(--sh-lg)}
.key-card .knum{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;font-weight:800;font-size:15px;
  color:#04231C;background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  box-shadow:0 8px 20px rgba(47,216,183,.28);margin-bottom:20px;
}
.key-card h3{font-size:19px;margin-bottom:12px}
.key-card p{color:var(--t2);font-size:15px}
.key-card .kpts{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.key-card .kpts span{
  font-size:14px;color:var(--t2);display:flex;gap:9px;align-items:flex-start;
}
.key-card .kpts span::before{
  content:"";flex:none;width:6px;height:6px;border-radius:2px;background:var(--brand);margin-top:10px;
}

/* ---------- Quick list ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.quick-item{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r16);
  padding:26px 22px;box-shadow:0 10px 26px rgba(12,24,39,.07);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.quick-item:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.55);box-shadow:0 18px 38px rgba(12,24,39,.13)}
.quick-item .qi-num{
  font-size:22px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;
  display:block;margin-bottom:14px;line-height:1;
}
.quick-item h3{font-size:16px;margin-bottom:8px}
.quick-item p{font-size:14px;color:var(--light-text);line-height:1.8}

/* ---------- Media block ---------- */
.media-block{
  margin-top:56px;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r20);
  overflow:hidden;box-shadow:var(--sh-md);
}
.media-block .mb-media{position:relative;height:100%;min-height:280px}
.media-block .mb-media img{width:100%;height:100%;object-fit:cover;min-height:280px}
.media-block .mb-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,14,24,.55),rgba(7,14,24,0) 60%);
}
.media-block .mb-body{padding:34px 36px 34px 6px}
.media-block h3{font-size:20px;margin-bottom:14px}
.media-block p{color:var(--t2);font-size:15px}
.media-block .mb-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:var(--brand);
  font-size:14.5px;font-weight:600;
}
.media-block .mb-link span.arrow{transition:transform .2s ease}
.media-block .mb-link:hover span.arrow{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-list{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r16);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-md);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:22px 26px;color:var(--t1);position:relative;
}
.faq-q:hover{color:var(--brand)}
.faq-num{
  font-size:13px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;
  flex:none;width:26px;
}
.faq-q-text{flex:1;font-size:17px;font-weight:600;line-height:1.6}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);box-shadow:0 0 12px rgba(47,216,183,.6);
}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  padding:0 26px 24px 68px;color:var(--t2);font-size:15px;line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  padding:0 0 96px;
}
.cta-card{
  display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;
  padding:44px 46px;border-radius:var(--r20);
  background:linear-gradient(120deg,rgba(47,216,183,.16) 0%,rgba(18,36,58,.9) 58%);
  border:1px solid rgba(47,216,183,.28);
  box-shadow:var(--sh-lg);
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.24),rgba(47,216,183,0) 70%);
}
.cta-card h2{font-size:clamp(20px,2.2vw,27px);margin-bottom:12px}
.cta-card p{color:var(--t2);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;position:relative;z-index:1}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-deep);
  padding:72px 0 34px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(47,216,183,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--t3);line-height:1.9;max-width:340px}
.footer-col h4{font-size:15px;color:var(--t1);margin-bottom:16px;font-weight:600}
.footer-col li{font-size:14px;color:var(--t3);padding:6px 0}
.footer-col a{transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  font-size:13px;color:var(--t3);
}
.footer-bottom .sep{opacity:.45}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .nav-left{flex:0 1 58%}
  .nav-right{flex:0 1 42%}
  .nav-links{gap:20px}
  .nav-links a{font-size:14px}
}
@media (max-width:1023px){
  .nav-inner{padding:0 24px}
  .nav-left,.nav-right{flex:0 1 auto}
  .nav-left{flex:1 1 auto;min-width:0}
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .search-toggle{display:none}
  .nav-search{display:none}
  .container{padding:0 24px}
  .sec{padding:64px 0}
  .lead{padding:64px 0 0}
  .lead-grid{grid-template-columns:1fr;gap:30px}
  .quick-grid{grid-template-columns:1fr 1fr;gap:18px}
  .key-grid{grid-template-columns:1fr}
  .media-block{grid-template-columns:1fr}
  .media-block .mb-body{padding:0 28px 32px}
  .media-block .mb-media::after{background:linear-gradient(180deg,rgba(7,14,24,.1),rgba(7,14,24,.75))}
  .cta-card{grid-template-columns:1fr;padding:34px 28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .faq-a-inner p{padding-left:26px}
}
@media (max-width:767px){
  :root{--nav-h:60px}
  body{font-size:15px}
  .nav-inner{padding:0 16px}
  .container{padding:0 16px}
  .nav-right .btn-sm{display:none}
  .cat-hero{padding:calc(var(--nav-h) + 52px) 0 56px}
  .hero-meta{gap:20px;margin-top:26px}
  .hero-meta .num{font-size:22px}
  .sec{padding:48px 0}
  .lead{padding:48px 0 0}
  .quick-grid{grid-template-columns:1fr}
  .table-wrap{background:transparent;border:0;box-shadow:none;overflow:visible}
  table.cmp,table.cmp thead,table.cmp tbody,table.cmp tr,table.cmp td{display:block;width:100%}
  table.cmp thead{display:none}
  table.cmp tbody tr{
    background:#fff !important;border:1px solid var(--line-light);border-radius:var(--r12);
    margin-bottom:14px;padding:6px 4px;box-shadow:0 8px 20px rgba(12,24,39,.07);
  }
  table.cmp tbody td{border-bottom:1px dashed var(--line-light);padding:14px 18px}
  table.cmp tbody td:last-child{border-bottom:0}
  table.cmp tbody td::before{
    content:attr(data-label);display:block;font-size:12px;letter-spacing:.08em;
    color:#8A99AC;margin-bottom:6px;
  }
  .media-block .mb-body{padding:0 20px 26px}
  .faq-q{padding:18px;gap:12px}
  .faq-q-text{font-size:15.5px}
  .faq-a-inner p{padding:0 18px 20px;font-size:14.5px}
  .cta-card{padding:28px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-bottom .sep{display:none}
}
@media (max-width:480px){
  body{font-size:14.5px}
  .logo-main{font-size:15px}
  .cat-hero h1{font-size:26px}
  .hero-sub{font-size:15px}
  .btn{padding:12px 20px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .key-card:hover,.quick-item:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg-deep:#070E18;
  --bg:#0C1827;
  --bg-panel:#12243A;
  --bg-card:#0F1F33;
  --accent:#2FD8B7;
  --accent-deep:#17B79A;
  --amber:#F2B441;
  --light:#F4F7FA;
  --light-title:#0C1827;
  --light-text:#44566B;
  --text:#E9F1F8;
  --text-2:#9FB2C6;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.10);
  --line-light:#E2E8F0;
  --danger:#FF6B6B;
  --r-8:8px;
  --r-12:12px;
  --r-16:16px;
  --r-20:20px;
  --r-full:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.14);
  --container:1200px;
  --nav-h:68px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  --font-num:"Helvetica Neue",Arial,"Segoe UI",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,select,textarea{font-family:inherit;font-size:16px;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-light{background:var(--light);color:var(--light-text)}
.section-light h2,.section-light h3,.section-light h4{color:var(--light-title)}
.section-light .eyebrow{color:#0B8E79;border-color:rgba(23,183,154,.32);background:rgba(23,183,154,.10)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;font-weight:600;
  color:var(--accent);background:rgba(47,216,183,.10);
  border:1px solid rgba(47,216,183,.28);border-radius:var(--r-full);
  padding:5px 14px;line-height:1.6;
}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25;margin-top:16px}
.section-head p{margin-top:14px;font-size:16px;line-height:1.9;color:var(--text-2)}
.section-light .section-head p{color:var(--light-text)}
.divider{height:1px;background:var(--line);border:0;margin:0}
.section-light .divider{background:var(--line-light)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,14,24,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.nav-inner{
  max-width:1280px;margin:0 auto;height:100%;
  padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:20px;min-width:0}
.nav-left{width:55%}
.nav-right{width:45%;justify-content:flex-end}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--accent),var(--accent-deep));
  color:#04231C;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(47,216,183,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:800;color:var(--text);letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:var(--r-8);
  transition:color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
  opacity:0;transform:scaleX(.4);transform-origin:left;
  transition:opacity .2s ease,transform .2s ease;
}
.nav-links a:hover{color:var(--text);transform:translateY(-1px)}
.nav-links a:hover::after{opacity:.55;transform:scaleX(1)}
.nav-links a.is-active{color:#FFFFFF}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(47,216,183,.8)}
.nav-search{position:relative;display:flex;align-items:center}
.search-toggle{
  width:38px;height:38px;border-radius:var(--r-full);
  display:grid;place-items:center;cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:color .2s ease,border-color .2s ease;
}
.search-toggle:hover{color:var(--accent);border-color:rgba(47,216,183,.4)}
.search-field{
  position:absolute;right:46px;top:50%;transform:translateY(-50%);
  width:0;opacity:0;overflow:hidden;
  transition:width .3s ease,opacity .25s ease;
}
.nav-search.is-open .search-field{width:320px;opacity:1}
.search-field input{
  width:100%;height:38px;padding:0 16px;
  border-radius:var(--r-full);
  background:var(--glass);border:1px solid var(--glass-line);
  color:var(--text);font-size:14px;
}
.search-field input::placeholder{color:var(--text-3)}
.search-field input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(47,216,183,.18),var(--glow);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-12);
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text);
  cursor:pointer;place-items:center;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:var(--r-full);
  font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease;
}
.btn-primary{background:var(--accent);color:#04231C;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(47,216,183,.5);filter:brightness(1.04)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:var(--glass);color:var(--text);
  border:1px solid var(--glass-line);
}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-lg{padding:16px 30px;font-size:16px}
.btn[disabled],.btn.is-loading{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:14.5px;font-weight:600;
}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,14,24,.6);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:100;
  background:rgba(10,20,33,.92);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--glass-line);
  padding:22px 22px 32px;
  transform:translateX(102%);transition:transform .3s ease;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-12);display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.drawer-nav a{
  padding:14px 14px;border-radius:var(--r-12);font-size:15.5px;color:var(--text-2);
  border:1px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:var(--text);background:var(--glass);border-color:var(--glass-line);
}
.drawer-nav a.is-active{box-shadow:inset 3px 0 0 var(--accent)}
.drawer-search input{
  width:100%;height:44px;padding:0 16px;border-radius:var(--r-full);
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text);
}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-contact{margin-top:26px;font-size:14px;color:var(--text-2);line-height:2}
.drawer-contact strong{color:var(--text);display:block;font-size:15px;margin-bottom:6px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + 76px) 0 84px;
  background-image:linear-gradient(180deg,rgba(7,14,24,.86),rgba(12,24,39,.94)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(47,216,183,.20),rgba(47,216,183,0) 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.page-hero h1{
  font-size:clamp(28px,4.2vw,50px);font-weight:800;line-height:1.25;
  letter-spacing:-.01em;margin-top:18px;
}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{margin-top:16px;font-size:clamp(17px,2vw,20px);color:var(--text-2);line-height:1.8;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:38px}
.hero-metrics li{
  padding:0 22px;border-left:1px solid var(--line);
  font-size:14px;color:var(--text-2);line-height:1.7;
}
.hero-metrics li:first-child{padding-left:0;border-left:0}
.hero-metrics strong{display:block;font-family:var(--font-num);font-size:20px;color:var(--text);font-weight:800;font-variant-numeric:tabular-nums}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:var(--r-20);overflow:hidden;
  border:1px solid rgba(47,216,183,.28);
  box-shadow:0 0 0 1px rgba(47,216,183,.10),var(--sh-lg);
}
.hero-visual .frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.glass-card{
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-md);
  border-radius:var(--r-16);
}
.hero-float{
  position:absolute;left:-26px;bottom:-26px;padding:16px 20px;min-width:200px;
}
.hero-float .k{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.hero-float .v{font-family:var(--font-num);font-size:26px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.4}
.hero-float .t{font-size:13px;color:var(--text-2)}
.hero-float-2{position:absolute;right:-14px;top:24px;padding:12px 16px}
.hero-float-2 .v{font-family:var(--font-num);font-size:18px;font-weight:700;color:var(--amber)}
.hero-float-2 .t{font-size:12px;color:var(--text-2)}

/* ---------- stats band ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-block{
  background:#FFFFFF;border:1px solid var(--line-light);border-radius:var(--r-16);
  padding:28px 24px;box-shadow:0 4px 16px rgba(12,24,39,.06);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-block:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(12,24,39,.12);border-color:rgba(23,183,154,.4)}
.stat-block .num{
  font-family:var(--font-num);font-size:clamp(34px,4vw,50px);font-weight:800;
  color:var(--light-title);line-height:1.15;font-variant-numeric:tabular-nums;
  padding-bottom:10px;border-bottom:2px solid rgba(242,180,65,.75);display:inline-block;
}
.stat-block .num small{font-size:16px;font-weight:600;color:var(--amber);margin-left:4px}
.stat-block .label{margin-top:14px;font-size:15px;font-weight:600;color:var(--light-title)}
.stat-block .desc{margin-top:6px;font-size:13.5px;color:var(--light-text);line-height:1.8}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:56px}
.timeline::before{
  content:"";position:absolute;left:50%;top:6px;bottom:6px;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(47,216,183,0),rgba(47,216,183,.5) 12%,rgba(47,216,183,.5) 88%,rgba(47,216,183,0));
}
.tl-item{display:grid;grid-template-columns:1fr 76px 1fr;align-items:center;margin-bottom:40px}
.tl-node{grid-column:2;grid-row:1;justify-self:center;z-index:1}
.tl-dot{
  width:16px;height:16px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 6px rgba(47,216,183,.12),0 0 24px rgba(47,216,183,.7);
}
.tl-card{
  grid-column:1;grid-row:1;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-16);
  padding:26px 26px 24px;box-shadow:var(--sh-sm);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.35);box-shadow:var(--sh-md)}
.tl-step{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);
  font-size:13px;font-weight:700;color:var(--amber);letter-spacing:.08em;
}
.tl-card h3{margin-top:10px;font-size:19px;font-weight:600;line-height:1.5}
.tl-card p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.9}
.tl-points{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.tl-points li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.tl-points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;
  background:var(--accent);border-radius:2px;box-shadow:0 0 10px rgba(47,216,183,.55);
}
.tl-thumb{grid-column:3;grid-row:1}
.tl-thumb img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-12);
  border:1px solid var(--line);box-shadow:var(--sh-sm);
}
.tl-thumb figcaption{margin-top:10px;font-size:12.5px;color:var(--text-3);text-align:center}
.tl-item:nth-child(even) .tl-card{grid-column:3}
.tl-item:nth-child(even) .tl-thumb{grid-column:1}

/* ---------- brief ---------- */
.brief-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.brief-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line-light)}
.brief-list li{padding:22px 0;border-bottom:1px solid var(--line-light);display:grid;grid-template-columns:32px 1fr;gap:14px}
.section:not(.section-light) .brief-list{border-top-color:var(--line)}
.section:not(.section-light) .brief-list li{border-bottom-color:var(--line)}
.brief-list .idx{
  font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--amber);
  line-height:1.9;
}
.brief-list h4{font-size:16px;font-weight:600;line-height:1.6}
.brief-list p{margin-top:6px;font-size:14.5px;line-height:1.9;color:var(--light-text)}
.section:not(.section-light) .brief-list p{color:var(--text-2)}
.brief-card{
  background:#FFFFFF;border:1px solid var(--line-light);border-radius:var(--r-20);
  overflow:hidden;box-shadow:0 8px 26px rgba(12,24,39,.09);
}
.brief-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.brief-card .body{padding:26px}
.brief-card h3{font-size:20px;font-weight:700;line-height:1.5}
.brief-card p{margin-top:10px;font-size:15px;color:var(--light-text);line-height:1.9}
.brief-card .link-arrow{margin-top:18px}

/* ---------- faq ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(47,216,183,.35);box-shadow:inset 3px 0 0 var(--accent),var(--sh-md)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 22px;background:none;border:0;color:var(--text);
  font-size:17px;font-weight:600;line-height:1.7;cursor:pointer;
}
.faq-q .q-idx{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--amber);flex-shrink:0}
.faq-q .q-text{flex:1}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--glass-line);
  color:var(--accent);font-size:16px;line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(47,216,183,.14)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 22px 22px 60px;font-size:15px;color:var(--text-2);line-height:1.9}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  padding:76px 0;
  background-image:linear-gradient(120deg,rgba(7,14,24,.92),rgba(12,36,55,.88)),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  background:rgba(255,255,255,.06);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-radius:var(--r-20);padding:36px 40px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lg);
}
.cta-inner h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.4}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);padding:72px 0 28px;position:relative;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--accent),rgba(47,216,183,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:18px;font-size:14.5px;color:var(--text-2);line-height:1.95;max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14.5px;color:var(--text-2);line-height:1.8}
.footer-col a{transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-3);
}
.footer-bottom .sep{opacity:.6}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-left{width:58%}
  .nav-right{width:42%}
}
@media (max-width:1023px){
  :root{--nav-h:60px}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .nav-left{width:auto}
  .nav-right{width:auto}
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-search{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2}
  .hero-float{left:12px;bottom:-18px}
  .hero-float-2{right:8px}
  .page-hero{padding:calc(var(--nav-h) + 56px) 0 64px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .brief-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .timeline::before{left:11px;transform:none}
  .tl-item{grid-template-columns:24px 1fr;gap:0 18px;align-items:start}
  .tl-node{grid-column:1;grid-row:1;justify-self:start;margin-top:26px}
  .tl-dot{width:14px;height:14px}
  .tl-card{grid-column:2;grid-row:1}
  .tl-thumb{grid-column:2;grid-row:2;margin-top:14px}
  .tl-item:nth-child(even) .tl-card{grid-column:2}
  .tl-item:nth-child(even) .tl-thumb{grid-column:2}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:48px 0}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-metrics{gap:18px 0}
  .hero-metrics li{padding:0 16px}
  .cta-inner{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-a p{padding-left:22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .btn-lg{padding:15px 22px;width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-float{position:static;margin-top:16px}
  .hero-float-2{position:static;margin-top:12px;display:inline-block}
  .hero-metrics li{padding:0 12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-deep:#070E18;
  --bg:#0C1827;
  --panel:#12243A;
  --panel-2:#0F1F33;
  --accent:#2FD8B7;
  --accent-deep:#17B79A;
  --amber:#F2B441;
  --light:#F4F7FA;
  --light-line:#E2E8F0;
  --ink:#0C1827;
  --ink-2:#44566B;
  --text:#E9F1F8;
  --text-2:#9FB2C6;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.14);
  --danger:#FF6B6B;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--r-pill:999px;
  --sh-sm:0 2px 8px rgba(0,0,0,.24);
  --sh-md:0 12px 28px rgba(0,0,0,.35);
  --sh-lg:0 24px 56px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(47,216,183,.35);
  --container:1200px;
  --header-h:68px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:var(--header-h);
  background:transparent;border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(12,24,39,.72);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:0 32px;height:100%;
  display:grid;grid-template-columns:55% 45%;align-items:center;
}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0;}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--accent) 0%,var(--accent-deep) 100%);
  color:#04140F;font-size:13px;font-weight:800;letter-spacing:.5px;
  box-shadow:var(--glow);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--text);}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:2px;}
.nav-links{display:flex;align-items:center;gap:24px;min-width:0;}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--text-2);
  padding:6px 0;white-space:nowrap;transition:color .2s ease,transform .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),rgba(47,216,183,0));
  transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a:hover{color:var(--text);transform:translateY(-1px);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(47,216,183,.55);}
.nav-search{display:flex;align-items:center;}
.search-toggle{
  width:38px;height:38px;border-radius:var(--r-pill);display:grid;place-items:center;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  cursor:pointer;transition:color .2s,border-color .2s,background .2s;
}
.search-toggle:hover{color:var(--accent);border-color:rgba(47,216,183,.45);background:rgba(47,216,183,.08);}
.search-field{width:0;opacity:0;overflow:hidden;transition:width .28s ease,opacity .2s ease,margin .28s ease;}
.nav-search.is-open .search-field{width:250px;opacity:1;margin-left:8px;}
.search-field input{
  width:100%;height:38px;border-radius:var(--r-pill);padding:0 16px;font-size:13px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text);
  transition:border-color .2s,box-shadow .2s;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(47,216,183,.16);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px;}
.btn-md{height:46px;padding:0 24px;font-size:15px;}
.btn-lg{height:52px;padding:0 30px;font-size:15.5px;}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#04140F;box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(47,216,183,.5);filter:brightness(1.04);}
.btn-primary:active{transform:scale(.98);}
.btn-primary[disabled],.btn-primary.is-loading{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-ghost{
  background:rgba(255,255,255,.04);border-color:var(--glass-line);color:var(--text);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(47,216,183,.12);border-color:rgba(47,216,183,.5);transform:translateY(-2px);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
  cursor:pointer;place-items:center;
}
.nav-toggle:hover{border-color:rgba(47,216,183,.45);color:var(--accent);}

/* ---------- drawer ---------- */
.nav-overlay{
  position:fixed;inset:0;background:rgba(7,14,24,.6);opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;z-index:130;
}
.nav-overlay.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:400px;z-index:140;
  background:rgba(12,24,39,.9);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid var(--glass-line);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,.1,.2,1);
  display:flex;flex-direction:column;padding:18px 20px 28px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:13px;letter-spacing:2px;color:var(--text-3);}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-md);background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--accent);border-color:rgba(47,216,183,.45);}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-links a{
  padding:14px 12px;border-radius:var(--r-md);font-size:15.5px;color:var(--text-2);
  border:1px solid transparent;transition:background .2s,color .2s,border-color .2s;
}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:var(--text);}
.drawer-links a.is-active{color:var(--accent);background:rgba(47,216,183,.10);border-color:rgba(47,216,183,.3);}
.drawer-search{margin-bottom:16px;}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-md);padding:0 16px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text);font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(47,216,183,.16);}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);}
.drawer-foot p{margin-top:12px;line-height:1.8;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--header-h) + 46px) 0 66px;
  background:
    radial-gradient(900px 460px at 82% -10%,rgba(47,216,183,.14),transparent 62%),
    radial-gradient(700px 420px at -6% 22%,rgba(242,180,65,.08),transparent 60%),
    var(--bg);
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;pointer-events:none;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;
  gap:52px;align-items:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-2);transition:color .2s;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:var(--text-3);opacity:.7;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(47,216,183,.10);border:1px solid rgba(47,216,183,.3);
  color:var(--accent);font-size:12.5px;letter-spacing:.6px;margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);}
.page-hero h1{
  font-size:clamp(28px,4.2vw,50px);font-weight:800;letter-spacing:-.4px;line-height:1.22;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{font-size:clamp(15px,1.5vw,17px);color:var(--text-2);max-width:600px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-facts{display:flex;flex-wrap:wrap;align-items:center;gap:0;}
.fact{padding:0 22px;border-left:1px solid var(--line);}
.fact:first-child{padding-left:0;border-left:0;}
.fact b{display:block;font-size:22px;font-weight:800;color:var(--text);line-height:1.2;}
.fact b i{font-style:normal;font-size:12px;color:var(--amber);margin-left:3px;font-weight:600;}
.fact span{font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-shot{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--sh-lg);
  background:linear-gradient(160deg,var(--panel),var(--bg-deep));
}
.hero-shot img{width:100%;aspect-ratio:16/11;object-fit:cover;opacity:.92;}
.hero-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,14,24,.12),rgba(7,14,24,.72));
}
.hero-ring{
  position:absolute;inset:-14px;border-radius:26px;
  border:1px solid rgba(47,216,183,.22);pointer-events:none;
}
.float-card{
  position:absolute;left:-18px;bottom:26px;z-index:3;
  min-width:186px;padding:14px 18px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-md);
}
.float-card b{display:block;font-size:24px;font-weight:800;color:var(--accent);line-height:1.15;}
.float-card span{font-size:12.5px;color:var(--text-2);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.section-tag{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--accent);
  padding:4px 12px;border-radius:var(--r-pill);background:rgba(47,216,183,.10);
  border:1px solid rgba(47,216,183,.26);margin-bottom:16px;
}

/* ---------- category layout: cards + sticky aside ---------- */
.cat-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:40px;align-items:start;}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.guide-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-sm);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.guide-card:hover{transform:translateY(-4px);border-color:rgba(47,216,183,.32);box-shadow:var(--sh-md);}
.guide-card .thumb{position:relative;overflow:hidden;}
.guide-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.guide-card:hover .thumb img{transform:scale(1.03);}
.guide-card .thumb::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,14,24,0) 40%,rgba(7,14,24,.78));
}
.thumb-badge{
  position:absolute;top:12px;left:12px;z-index:2;
  height:26px;padding:0 12px;display:inline-flex;align-items:center;border-radius:var(--r-pill);
  font-size:12px;background:rgba(47,216,183,.16);border:1px solid rgba(47,216,183,.4);color:var(--accent);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.text-link{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--accent);font-weight:600;align-self:flex-start;
}
.text-link svg{transition:transform .22s ease;}
.text-link:hover svg{transform:translateX(4px);}

/* sticky aside */
.cat-side{position:sticky;top:calc(var(--header-h) + 24px);display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:rgba(255,255,255,.06);border:1px solid var(--glass-line);border-radius:var(--r-lg);
  padding:22px 22px 24px;backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.side-card h3{font-size:15px;letter-spacing:.5px;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(47,216,183,.7);}
.point-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.75;padding:9px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.point-list li:last-child{border-bottom:0;padding-bottom:0;}
.point-list li::before{
  content:"";width:7px;height:7px;margin-top:8px;flex:none;border-radius:2px;
  background:var(--accent);box-shadow:0 0 8px rgba(47,216,183,.7);
}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:var(--r-md);font-size:14px;color:var(--text-2);
  transition:background .2s,color .2s,padding-left .2s;
}
.side-links a:hover{background:rgba(47,216,183,.1);color:var(--accent);padding-left:16px;}
.side-links a span{font-size:12px;color:var(--text-3);}
.side-meta{font-size:13.5px;color:var(--text-2);line-height:1.9;}
.side-meta strong{color:var(--text);font-weight:600;}
.side-meta .row{display:flex;gap:10px;padding:7px 0;border-bottom:1px solid rgba(255,255,255,.07);}
.side-meta .row:last-child{border-bottom:0;}
.side-meta .row em{font-style:normal;color:var(--text-3);min-width:66px;flex:none;}

/* ---------- light band ---------- */
.band-light{background:var(--light);color:var(--ink);padding:88px 0;}
.band-light .section-head h2{color:var(--ink);}
.band-light .section-head p{color:var(--ink-2);}
.band-light .section-tag{background:rgba(47,216,183,.14);border-color:rgba(23,183,154,.3);color:#0E8E78;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{
  background:#fff;border:1px solid var(--light-line);border-radius:var(--r-lg);
  padding:26px 24px 24px;box-shadow:0 4px 16px rgba(12,24,39,.06);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.stat:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(12,24,39,.12);border-color:rgba(23,183,154,.35);}
.stat b{display:block;font-size:46px;font-weight:800;line-height:1.08;color:var(--ink);letter-spacing:-1px;}
.stat b i{font-style:normal;font-size:15px;color:#0E8E78;margin-left:4px;font-weight:700;}
.stat .u{display:block;width:44px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),rgba(47,216,183,0));margin:14px 0 12px;}
.stat h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.stat p{font-size:13.5px;color:var(--ink-2);line-height:1.75;}

/* ---------- promise strip ---------- */
.promise{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:36px;align-items:start;
  background:var(--panel-2);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-lg);padding:32px 34px;
}
.promise h3{font-size:19px;font-weight:600;}
.promise p{font-size:15px;color:var(--text-2);line-height:1.9;}
.promise strong{color:var(--accent);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.faq-item{
  background:rgba(255,255,255,.06);border:1px solid var(--glass-line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:border-color .22s ease,background .22s ease;
}
.faq-item[open]{border-color:rgba(47,216,183,.34);background:rgba(47,216,183,.06);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:20px 50px 20px 22px;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:19px;font-size:20px;font-weight:400;
  color:var(--accent);line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(0);}
.faq-item summary::before{
  content:"";position:absolute;left:-1px;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--accent);opacity:0;transition:opacity .22s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-num{font-size:13px;font-weight:700;color:var(--amber);letter-spacing:1px;padding-top:3px;}
.faq-body{padding:0 22px 22px 22px;font-size:14.5px;color:var(--text-2);line-height:1.9;margin:0;}
.faq-body p{margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(120deg,rgba(47,216,183,.14),rgba(12,24,39,.9) 55%),var(--panel);
  border:1px solid var(--glass-line);padding:56px 48px;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,183,.22),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:600px;}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:16px;bottom:16px;width:56px;height:56px;border-radius:50%;z-index:110;
  display:grid;place-items:center;background:rgba(255,255,255,.07);border:1px solid var(--glass-line);
  color:var(--text-2);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  cursor:pointer;opacity:0;visibility:hidden;transition:opacity .24s,visibility .24s,color .2s,border-color .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{color:var(--accent);border-color:rgba(47,216,183,.5);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);border-top:2px solid transparent;
  border-image:linear-gradient(90deg,rgba(47,216,183,.85),rgba(47,216,183,0)) 1;
  padding:72px 0 28px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.9;margin-top:18px;max-width:340px;}
.footer-brand .logo{margin-bottom:4px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.5px;}
.footer-col ul li{font-size:13.5px;color:var(--text-2);line-height:1.9;padding:5px 0;}
.footer-col ul li a{transition:color .2s,padding-left .2s;display:inline-block;}
.footer-col ul li a:hover{color:var(--accent);padding-left:2px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--text-3);
}
.footer-bottom .sep{opacity:.5;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-inner{grid-template-columns:58% 42%;max-width:1180px;}
  .hero-grid{gap:40px;}
  .cat-layout{grid-template-columns:minmax(0,1fr) 310px;gap:32px;}
}
@media (max-width:1023px){
  .nav-inner{display:flex;justify-content:space-between;padding:0 24px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:grid;}
  .page-hero{padding-top:calc(var(--header-h) + 34px);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:640px;}
  .cat-layout{grid-template-columns:1fr;}
  .cat-side{position:static;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .section{padding:64px 0;}
  .band-light{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .card-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .promise{grid-template-columns:1fr;gap:16px;padding:26px 22px;}
  .cta-band{padding:38px 24px;}
  .section{padding:52px 0;}
  .band-light{padding:52px 0;}
  .page-hero h1{font-size:28px;}
  .float-card{left:12px;bottom:14px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .logo-sub{display:none;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:14px 0;}
  .fact{padding:0 14px;}
  .fact b{font-size:19px;}
  .stat-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .card-body h3{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}