/* roulang page: index */
:root{
  --c-primary:#166E8C;
  --c-primary-deep:#0F4F66;
  --c-primary-soft:#E7F2F5;
  --c-accent:#F2704A;
  --c-accent-hover:#D95A36;
  --c-secondary:#2FB8A8;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-border:rgba(22,110,140,.10);
  --c-text:#1F2A2E;
  --c-text-2:#5A6B72;
  --c-text-3:#8A9AA0;
  --r-card:16px;
  --r-block:20px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,79,102,.06);
  --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
  --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding-left:1.15em;}
input,textarea{font-family:inherit;font-size:15px;}
.wrap{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:1024px){.wrap{padding-left:24px;padding-right:24px;}}
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
@media(max-width:768px){:root{--sp-section:60px;}}
.h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;font-weight:700;letter-spacing:-.01em;}
.h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--c-text-2);}
.muted{color:var(--c-text-2);}
.tiny{font-size:13px;line-height:1.5;font-weight:500;color:var(--c-text-3);}
section[id]{scroll-margin-top:96px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(1.1) blur(6px);
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--sh-1);
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{width:12px;height:34px;border-radius:4px;background:linear-gradient(180deg,var(--c-secondary),var(--c-primary));}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:19px;font-weight:700;color:var(--c-primary-deep);letter-spacing:.01em;}
.brand-sub{font-size:12px;font-weight:500;color:var(--c-text-3);}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:999px;
  font-size:15px;color:var(--c-text-2);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:5px;height:2px;border-radius:2px;
  background:var(--c-primary);transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link[aria-current="page"]{background:var(--c-primary);color:#fff;font-weight:600;}
.nav-link[aria-current="page"]::after{display:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;padding:13px 26px;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 12px 24px -14px rgba(217,90,54,.95);}
.btn-accent:hover{background:var(--c-accent-hover);box-shadow:0 16px 28px -14px rgba(217,90,54,1);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn-sm{padding:10px 20px;font-size:14px;}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:12px;border:1px solid var(--c-border);background:#fff;color:var(--c-primary-deep);
}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.mobile-menu{border-top:1px solid var(--c-border);background:#fff;}
.mobile-menu a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;border-bottom:1px solid var(--c-border);
  color:var(--c-text);font-size:16px;
}
.mobile-menu a[aria-current="page"]{color:var(--c-primary);font-weight:600;}

/* hero */
.hero{position:relative;overflow:hidden;padding-top:72px;padding-bottom:64px;}
.hero::before{
  content:"";position:absolute;width:620px;height:620px;right:-180px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,168,.08),rgba(47,184,168,0) 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;}}
.hero-img{border-radius:var(--r-img);box-shadow:var(--sh-card);object-fit:cover;aspect-ratio:4/3;width:100%;border:1px solid var(--c-border);}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--c-border);color:var(--c-text-2);
  font-size:14px;font-weight:500;box-shadow:var(--sh-1);transition:all .2s ease;
}
.pill:hover{border-color:rgba(22,110,140,.35);color:var(--c-primary);}
.pill.is-active{border-color:var(--c-accent);color:var(--c-accent);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13px;font-weight:600;
}

/* cards */
.card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.2);}
.card-pad{padding:26px;}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(47,184,168,.14);color:#1E7F74;font-size:12px;font-weight:600;
}
.badge-outline{background:#fff;border:1px solid var(--c-border);color:var(--c-text-2);}
.tick{color:var(--c-secondary);font-weight:700;margin-right:8px;}
.point-list{list-style:none;padding:0;margin:0;}
.point-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed rgba(22,110,140,.14);font-size:15px;color:var(--c-text-2);}
.point-list li:last-child{border-bottom:none;}
.soft-block{background:var(--c-primary-soft);border-radius:var(--r-block);}

/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr);}}
.step{position:relative;padding-top:58px;}
.step-num{
  position:absolute;top:0;left:0;width:36px;height:36px;border-radius:50%;
  border:1.5px solid var(--c-secondary);color:#1E7F74;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;background:#fff;
}
.step::before{
  content:"";position:absolute;top:18px;left:48px;right:-24px;border-top:1px dashed rgba(47,184,168,.5);
}
.step:last-child::before{display:none;}
@media(max-width:767px){.step::before{display:none;}}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(2,1fr);}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr);}}
.stat{padding:18px 20px;border-left:1px solid var(--c-border);}
.stat:first-child{border-left:none;}
@media(max-width:767px){
  .stat:nth-child(odd){border-left:none;}
  .stat{border-top:1px solid var(--c-border);}
  .stat:nth-child(-n+2){border-top:none;}
}
.stat-num{font-size:40px;font-weight:700;color:var(--c-primary);line-height:1.1;}
.stat-label{font-size:13px;color:var(--c-text-3);margin-top:4px;}

/* testimonial offset */
.offset-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){
  .offset-grid{grid-template-columns:1fr 1fr;}
  .offset-grid > *:nth-child(2){transform:translateY(24px);}
}

/* pricing */
.plan-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start;}
@media(min-width:900px){.plan-grid{grid-template-columns:1fr 1fr;max-width:900px;margin:0 auto;}}
.plan{padding:30px;}
.plan.is-featured{border:1.5px solid var(--c-primary);margin-top:-16px;position:relative;}
.plan-tag{
  position:absolute;top:-13px;left:26px;background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:600;padding:5px 14px;border-radius:999px;
}
.plan-price{font-size:34px;font-weight:700;color:var(--c-primary-deep);line-height:1.2;}
.plan-price span{font-size:14px;font-weight:500;color:var(--c-text-3);}

/* news list */
.post-card{
  display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.2);}
.post-thumb img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;}
.post-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.post-body h3 a:hover{color:var(--c-primary);}
.post-body p{font-size:14px;line-height:1.75;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;}
.more-link{color:var(--c-primary);font-size:14px;font-weight:600;}
.more-link:hover{color:var(--c-primary-deep);}
.empty{
  padding:36px;border:1px dashed rgba(22,110,140,.25);border-radius:var(--r-card);
  background:#fff;color:var(--c-text-2);text-align:center;
}

/* faq */
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  background:none;border:none;padding:18px 20px;font-size:17px;font-weight:600;color:var(--c-text);
}
.faq-q:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-q .num{color:var(--c-secondary);font-weight:700;font-size:15px;}
.faq-q .plus{
  margin-left:auto;width:22px;height:22px;position:relative;flex:none;transition:transform .22s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:10px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:10px;width:2px;}
.faq-q[aria-expanded="true"] .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 20px 20px 54px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* cta band */
.cta-band{
  background:var(--c-primary-soft);border-radius:var(--r-block);padding:38px 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-band .title{font-size:20px;font-weight:600;color:var(--c-primary-deep);}
.cta-band .desc{font-size:14px;color:var(--c-text-2);margin-top:4px;}

/* form */
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--c-text-2);}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  border:1px solid rgba(22,110,140,.2);background:#fff;color:var(--c-text);
  transition:box-shadow .18s ease,border-color .18s ease;
}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 2px rgba(22,110,140,.25);
}
.field .hint{font-size:12px;color:var(--c-text-3);margin-top:6px;}

/* floating cta */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .btn{box-shadow:0 16px 30px -12px rgba(217,90,54,.8);}
@media(max-width:767px){
  .float-cta{right:0;left:0;bottom:0;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);border-top:1px solid var(--c-border);}
  .float-cta .btn{width:100%;}
}

/* footer */
.site-footer{background:var(--c-primary-deep);color:#D6E6EC;margin-top:var(--sp-section);}
.footer-wave{display:block;width:100%;height:26px;color:var(--c-primary-deep);}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:#B9D2DB;padding:5px 0;transition:color .18s ease;}
.footer-link:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#9FBCC7;}
.footer-brand-main{font-size:18px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:#9FBCC7;}

/* roulang page: article */
:root{
  --c-primary:#166E8C;
  --c-primary-deep:#0F4F66;
  --c-primary-soft:#E7F2F5;
  --c-accent:#F2704A;
  --c-accent-hover:#D95A36;
  --c-secondary:#2FB8A8;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-border:rgba(22,110,140,.10);
  --c-border-strong:rgba(22,110,140,.22);
  --c-text:#1F2A2E;
  --c-text-2:#5A6B72;
  --c-text-3:#8A9AA0;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,79,102,.06);
  --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
  --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--c-text);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
input,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 24px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--c-border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px;}
.logo{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:14px;height:14px;border-radius:4px;
  background:linear-gradient(135deg,var(--c-secondary),var(--c-primary));
  box-shadow:0 0 0 4px rgba(47,184,168,.12);
  flex:none;
}
.logo-main{display:block;font-size:19px;font-weight:700;color:var(--c-primary-deep);line-height:1.15;letter-spacing:.2px;}
.logo-sub{display:block;font-size:12px;color:var(--c-text-2);line-height:1.4;letter-spacing:1px;}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link[aria-current="page"]{color:var(--c-primary-deep);background:var(--c-primary-soft);font-weight:600;}

.header-actions{display:flex;align-items:center;gap:10px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;border-radius:999px;transition:all .18s ease;white-space:nowrap;}
.btn:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#fff;height:48px;padding:0 26px;box-shadow:0 10px 22px -12px rgba(242,112,74,.75);}
.btn-accent:hover{background:var(--c-accent-hover);box-shadow:0 14px 26px -12px rgba(242,112,74,.85);}
.btn-ghost{background:transparent;color:var(--c-primary);border:1.5px solid var(--c-border-strong);height:48px;padding:0 22px;}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.btn-primary{background:var(--c-primary);color:#fff;height:46px;padding:0 24px;}
.btn-primary:hover{background:var(--c-primary-deep);}
.btn-line{background:#fff;color:var(--c-primary);border:1.5px solid var(--c-border-strong);height:46px;padding:0 22px;}
.btn-line:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
@media (max-width:1023px){
  .btn-ghost{display:none;}
  .btn-accent{height:42px;padding:0 16px;font-size:14px;}
}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.menu-toggle:hover{background:var(--c-primary-soft);}
.mobile-drawer{display:none;border-top:1px solid var(--c-border);background:#fff;padding:12px 20px 18px;}
.mobile-drawer.open{display:block;}
.mobile-drawer a{display:block;padding:12px 6px;font-size:15px;color:var(--c-text-2);border-bottom:1px solid var(--c-border);}
.mobile-drawer a:last-child{border-bottom:0;}
.mobile-drawer a:hover{color:var(--c-primary);}

/* ---------- Page lead ---------- */
.page-lead{
  position:relative;
  padding:44px 0 12px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);}
.crumb a{color:var(--c-primary);font-weight:500;}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:var(--c-text-3);}
.crumb .current{color:var(--c-text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article ---------- */
.article-shell{padding:26px 0 var(--sp-section);}
.article-head{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:34px 30px 30px;
}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;
  letter-spacing:.2px;
  color:var(--c-primary-deep);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;padding-top:18px;border-top:1px dashed var(--c-border);
  font-size:13.5px;color:var(--c-text-3);
}
.meta-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  border-radius:999px;padding:5px 13px;font-size:13px;font-weight:600;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}

.article-body{
  max-width:780px;margin:34px auto 0;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  padding:40px 34px 44px;
  font-size:17.5px;
  line-height:1.95;
  color:var(--c-text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;max-width:38em;}
.article-body h2{
  position:relative;
  font-size:24px;font-weight:700;color:var(--c-primary-deep);
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:19.5px;font-weight:600;margin:1.6em 0 .6em;color:var(--c-text);}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--c-primary-deep);}
.article-body a{color:var(--c-primary);border-bottom:1px solid var(--c-border-strong);}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}
.article-body strong{color:var(--c-primary-deep);font-weight:600;}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 1.4em;}
.article-body li{margin-bottom:.5em;}
.article-body li::marker{color:var(--c-secondary);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:var(--c-bg);
  border-left:4px solid var(--c-secondary);
  border-radius:0 var(--r-input) var(--r-input) 0;
  color:var(--c-text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:1.4em auto;box-shadow:var(--sh-card);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--c-text-3);margin-top:8px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
  border-top:1px solid var(--c-border-strong);
}
.article-body th,.article-body td{
  text-align:left;padding:11px 12px;border-bottom:1px solid var(--c-border);
  vertical-align:top;
}
.article-body th{color:var(--c-primary-deep);font-weight:600;background:#FAFCFD;}
.article-body pre,.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--c-bg);border:1px solid var(--c-border);
  border-radius:var(--r-input);padding:16px;overflow-x:auto;font-size:14.5px;line-height:1.75;
}
.article-body code{background:var(--c-primary-soft);border-radius:6px;padding:2px 6px;font-size:.92em;color:var(--c-primary-deep);}
.article-body pre code{background:transparent;padding:0;color:inherit;}
.article-body hr{border:0;border-top:1px dashed var(--c-border-strong);margin:2.2em 0;}
.article-body .note{
  background:var(--c-bg);border-radius:var(--r-input);padding:18px 20px;margin:1.6em 0;
  font-size:15.5px;color:var(--c-text-2);
}

.empty-state{
  max-width:780px;margin:34px auto 0;text-align:center;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);padding:56px 30px;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;
}
.empty-state h2{font-size:22px;color:var(--c-primary-deep);margin-bottom:10px;}
.empty-state p{color:var(--c-text-2);font-size:15px;max-width:420px;margin:0 auto 22px;}

.article-footbar{
  max-width:780px;margin:26px auto 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  background:var(--c-primary-soft);border-radius:var(--r-img);padding:16px 20px;
}
.article-footbar span{font-size:14px;color:var(--c-primary-deep);font-weight:600;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);
}
.back-link:hover{color:var(--c-accent);}

/* ---------- Related ---------- */
.related{padding:0 0 var(--sp-section);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);color:var(--c-primary-deep);}
.section-head p{margin-top:10px;color:var(--c-text-2);font-size:15px;}
.card-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.post-card{
  display:flex;gap:18px;background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:18px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-border-strong);}
.post-thumb{
  width:150px;flex:none;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;background:var(--c-primary-soft);
}
.post-thumb img{width:100%;height:100%;object-fit:cover;}
.post-body{min-width:0;}
.post-cat{
  display:inline-block;background:rgba(47,184,168,.14);color:#1E7F74;
  border-radius:999px;padding:3px 11px;font-size:12.5px;font-weight:600;margin-bottom:8px;
}
.post-title{font-size:17px;font-weight:600;color:var(--c-primary-deep);line-height:1.45;}
.post-card:hover .post-title{color:var(--c-primary);}
.post-desc{font-size:13.5px;color:var(--c-text-2);line-height:1.7;margin:8px 0 0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;}
.post-date{font-size:12.5px;color:var(--c-text-3);}
.post-more{font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
@media (max-width:520px){
  .post-card{flex-direction:column;}
  .post-thumb{width:100%;}
}

/* ---------- Inline CTA ---------- */
.inline-cta{
  background:var(--c-primary-soft);
  border-radius:var(--r-lg);
  padding:34px 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.inline-cta h3{font-size:20px;color:var(--c-primary-deep);}
.inline-cta p{margin:8px 0 0;font-size:14.5px;color:var(--c-text-2);max-width:560px;}
.inline-cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Float CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  height:54px;padding:0 26px;border-radius:999px;
  box-shadow:0 16px 32px -14px rgba(217,90,54,.85);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,background-color .2s ease;
}
.float-cta.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.float-cta:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
@media (max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;width:100%;height:auto;
    border-radius:0;justify-content:center;padding:14px 18px calc(14px + env(safe-area-inset-bottom));
    font-size:15px;transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;background:var(--c-primary-deep);color:#DCEBF0;
  margin-top:20px;
}
.footer-wave{position:absolute;top:-25px;left:0;width:100%;height:26px;color:var(--c-bg);display:block;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.wrap{padding:0 24px;}}
.footer-brand-main{font-size:17px;font-weight:700;color:#fff;line-height:1.2;}
.footer-brand-sub{font-size:11.5px;color:#9FC2CD;letter-spacing:1px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.5px;}
.footer-link{display:block;font-size:14px;color:#B9D2DB;padding:5px 0;transition:color .18s ease;}
.footer-link:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#9FC2CD;}
.site-footer .brand-mark{background:linear-gradient(135deg,#7FE0D3,#2FB8A8);box-shadow:0 0 0 4px rgba(127,224,211,.14);}

/* ---------- Section spacing ---------- */
.section{padding:var(--sp-section) 0;}
.section-sm{padding:calc(var(--sp-section) * .62) 0;}
@media (max-width:767px){
  :root{--sp-section:60px;}
  .article-head{padding:26px 20px 24px;}
  .article-body{padding:28px 20px 32px;font-size:16.5px;line-height:1.9;}
  .article-body p{max-width:100%;}
  .inline-cta{padding:26px 20px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#166E8C;
  --c-primary-deep:#0F4F66;
  --c-primary-soft:#E7F2F5;
  --c-accent:#F2704A;
  --c-accent-hover:#D95A36;
  --c-secondary:#2FB8A8;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-border:rgba(22,110,140,.10);
  --c-text:#1F2A2E;
  --c-text-2:#5A6B72;
  --c-text-3:#8A9AA0;
  --r-card:16px;
  --r-block:20px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,79,102,.06);
  --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
  --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
section{scroll-margin-top:92px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){.wrap{padding-left:24px;padding-right:24px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:12px;height:12px;border-radius:4px;background:var(--c-secondary);flex:none;box-shadow:0 0 0 4px rgba(47,184,168,.14);}
.brand-main{display:block;font-size:22px;font-weight:700;color:var(--c-primary-deep);line-height:1.08;letter-spacing:.01em;}
.brand-sub{display:block;font-size:10px;color:var(--c-text-3);line-height:1.2;letter-spacing:.14em;margin-top:2px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 16px;
  border-radius:999px;font-size:15px;color:var(--c-text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link[aria-current="page"]{background:var(--c-primary);color:#fff;font-weight:600;}
.nav-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.header-cta{display:flex;align-items:center;gap:10px;flex:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:44px;padding:0 22px;font-size:14.5px;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(242,112,74,.85);}
.btn-accent:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
.btn-outline{border:1.5px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-accent:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F7F9 100%);
  border-bottom:1px solid var(--c-border);
}
.page-hero::before{
  content:"";position:absolute;width:640px;height:640px;right:-180px;top:-300px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,168,.12),rgba(47,184,168,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;padding-top:36px;padding-bottom:60px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3);margin-bottom:26px;}
.crumb a{color:var(--c-primary);transition:color .18s ease;}
.crumb a:hover{color:var(--c-primary-deep);text-decoration:underline;}
.crumb .sep{opacity:.65;}
h1.hero-h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.22;font-weight:700;color:var(--c-primary-deep);
  letter-spacing:-.01em;max-width:20em;
}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:38em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  border:1px solid rgba(22,110,140,.12);
}
.tag-dot{width:6px;height:6px;border-radius:50%;background:var(--c-secondary);flex:none;}

/* ============ 通用板块 ============ */
.section{padding-top:var(--sp-section);}
.section-tight{padding-top:72px;}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
h2.sec-title{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--c-primary-deep);}
.sec-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-text-2);}

/* ============ 步骤区 ============ */
.step-list{display:grid;gap:16px;}
.step-card{
  display:grid;grid-template-columns:48px 1fr;gap:18px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.22);}
.step-num{
  width:44px;height:44px;border-radius:50%;flex:none;
  border:1.5px solid var(--c-secondary);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;background:#fff;
}
.step-title{font-size:18px;font-weight:600;color:var(--c-text);line-height:1.45;}
.step-text{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--c-text-2);}
.aside-card{
  position:sticky;top:100px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-block);box-shadow:var(--sh-card);overflow:hidden;
}
.aside-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-bottom:1px solid var(--c-border);}
.aside-body{padding:22px 24px 26px;}
.aside-title{font-size:17px;font-weight:600;color:var(--c-primary-deep);}
.aside-list{margin-top:14px;display:grid;gap:10px;}
.aside-list li{position:relative;padding-left:18px;font-size:14px;line-height:1.75;color:var(--c-text-2);}
.aside-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--c-secondary);
}

/* ============ 数据带 ============ */
.data-band{
  display:grid;grid-template-columns:repeat(2,1fr);
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-block);box-shadow:var(--sh-1);overflow:hidden;
}
@media (min-width:900px){.data-band{grid-template-columns:repeat(4,1fr);}}
.data-cell{padding:26px 24px;border-bottom:1px solid var(--c-border);}
.data-cell:last-child{border-bottom:none;}
@media (min-width:900px){
  .data-cell{border-bottom:none;border-right:1px solid var(--c-border);}
  .data-cell:last-child{border-right:none;}
}
.data-k{font-size:15px;font-weight:600;color:var(--c-primary);}
.data-v{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-text-2);}

/* ============ 场景卡 ============ */
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card);border-color:rgba(22,110,140,.22);}
.scene-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);margin-bottom:16px;
}
.scene-title{font-size:18px;font-weight:600;color:var(--c-text);}
.scene-text{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--c-text-2);}

/* ============ 排查列表 ============ */
.trouble-list{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-block);box-shadow:var(--sh-1);overflow:hidden;
}
.trouble-row{padding:22px 26px;border-bottom:1px dashed rgba(22,110,140,.18);}
.trouble-row:last-child{border-bottom:none;}
.trouble-row:hover{background:#FBFDFD;}
.trouble-title{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:600;color:var(--c-text);}
.trouble-title .mark{width:8px;height:8px;border-radius:2px;background:var(--c-accent);flex:none;}
.trouble-text{margin-top:9px;font-size:14.5px;line-height:1.8;color:var(--c-text-2);padding-left:18px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;gap:32px;}
@media (min-width:1024px){.faq-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start;}}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:rgba(22,110,140,.24);box-shadow:var(--sh-card);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:19px 22px;font-size:17px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-idx{
  width:28px;height:28px;border-radius:50%;flex:none;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.faq-plus{margin-left:auto;width:22px;height:22px;position:relative;flex:none;transition:transform .22s ease;}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
.faq-plus::before{left:50%;top:4px;width:2px;height:14px;transform:translateX(-50%);}
.faq-plus::after{top:50%;left:4px;width:14px;height:2px;transform:translateY(-50%);}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-body{padding:0 22px 22px 64px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-block);
  background:var(--c-primary-deep);color:#fff;
  padding:52px 32px;
}
@media (min-width:768px){.cta-band{padding:60px 56px;}}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,168,.28),rgba(47,184,168,0) 70%);
}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.cta-text{margin-top:10px;font-size:15px;line-height:1.8;color:#C4DCE4;max-width:46em;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-primary-deep);color:#DCEAF0;
  margin-top:var(--sp-section);
}
.footer-wave{display:block;width:100%;height:26px;color:var(--c-bg);}
.footer-brand-main{font-size:16px;font-weight:700;color:#fff;line-height:1.2;}
.footer-brand-sub{font-size:10px;color:#9FC2CE;letter-spacing:.12em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-link{display:block;font-size:14px;color:#B9D2DB;padding:5px 0;transition:color .18s ease,transform .18s ease;}
.footer-link:hover{color:#fff;}
.footer-link:focus-visible{outline:2px solid #7FD3C6;outline-offset:2px;border-radius:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#9FBEC9;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:55;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 24px;border-radius:999px;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 16px 32px -12px rgba(242,112,74,.75);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,background-color .18s ease,visibility .3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
.float-cta:focus-visible{outline:2px solid #fff;outline-offset:3px;}
@media (max-width:767px){
  .float-cta{right:0;left:0;bottom:0;height:58px;border-radius:0;justify-content:center;
    padding-bottom:env(safe-area-inset-bottom,0);}
  .float-cta.show{transform:translateY(0);}
}

/* ============ 移动端导航 ============ */
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-border);
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;flex:none;
  transition:background-color .18s ease;
}
.menu-toggle:hover{background:var(--c-primary-soft);}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary);}
.mobile-nav{display:none;border-top:1px solid var(--c-border);background:#fff;padding:12px 20px 20px;}
.mobile-nav.open{display:grid;gap:4px;}
.mobile-nav .m-link{padding:12px 14px;border-radius:10px;color:var(--c-text-2);font-size:15px;}
.mobile-nav .m-link:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.mobile-nav .m-link[aria-current="page"]{background:var(--c-primary);color:#fff;font-weight:600;}
.mobile-nav .m-cta{margin-top:10px;display:flex;gap:10px;flex-wrap:wrap;}
@media (min-width:1024px){.mobile-nav{display:none !important;}}

@media (max-width:767px){
  :root{--sp-section:60px;}
  .header-inner{height:68px;}
  .brand-main{font-size:19px;}
  .brand-sub{font-size:10px;}
  .hero-inner{padding-top:24px;padding-bottom:44px;}
  .cta-band{padding:40px 24px;}
  .faq-body{padding-left:22px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#166E8C;
  --c-primary-deep:#0F4F66;
  --c-primary-soft:#E7F2F5;
  --c-accent:#F2704A;
  --c-accent-hover:#D95A36;
  --c-accent-soft:#FDEEE9;
  --c-secondary:#2FB8A8;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-border:rgba(22,110,140,.10);
  --c-border-strong:rgba(22,110,140,.20);
  --c-text:#1F2A2E;
  --c-text-2:#5A6B72;
  --c-text-3:#8A9AA0;
  --r-card:16px;
  --r-block:20px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,79,102,.06);
  --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
  --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
  --sp-section:96px;
  --font-cn:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",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:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.wrap{padding:0 24px;}}
.section{padding:var(--sp-section) 0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-secondary) 0%,var(--c-primary) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;left:7px;right:7px;bottom:9px;height:2px;border-radius:2px;
  background:rgba(255,255,255,.88);
}
.brand-main{display:block;font-size:19px;font-weight:700;line-height:1.2;color:var(--c-primary-deep);letter-spacing:.5px;}
.brand-sub{display:block;font-size:12px;line-height:1.3;color:var(--c-text-3);letter-spacing:2px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;font-size:15px;color:var(--c-text-2);
  border-radius:999px;transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;
  background:var(--c-primary);transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link[aria-current="page"]{background:var(--c-primary);color:#fff;font-weight:600;}
.nav-link[aria-current="page"]::after{display:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .18s ease;
}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -12px rgba(242,112,74,.85);}
.btn-accent:hover{background:var(--c-accent-hover);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(217,90,54,.9);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-border);
  background:#fff;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary-deep);transition:transform .22s ease,opacity .22s ease;}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-nav{max-height:0;overflow:hidden;background:#fff;transition:max-height .28s ease;border-top:1px solid transparent;}
.mobile-nav.open{max-height:560px;border-top-color:var(--c-border);}
.mobile-nav .m-link{display:block;padding:14px 20px;font-size:16px;color:var(--c-text-2);border-bottom:1px solid var(--c-border);}
.mobile-nav .m-link[aria-current="page"]{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.mobile-nav .m-cta{padding:16px 20px 22px;display:grid;gap:10px;}

/* ============ 页头信息区 ============ */
.page-hero{
  position:relative;
  background-image:
    linear-gradient(104deg,rgba(246,249,250,.97) 0%,rgba(246,249,250,.88) 52%,rgba(231,242,245,.74) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover,cover;
  background-position:center,center;
  border-bottom:1px solid var(--c-border);
}
.page-hero::before{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,168,.10) 0%,rgba(47,184,168,0) 68%);
  pointer-events:none;
}
.page-hero-inner{position:relative;padding:36px 0 68px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:26px;}
.crumb a{color:var(--c-primary);}
.crumb a:hover{text-decoration:underline;}
.crumb .sep{color:var(--c-text-3);}
.crumb .now{color:var(--c-text-2);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.22;font-weight:700;
  color:var(--c-primary-deep);max-width:820px;letter-spacing:.5px;
}
.hero-lead{max-width:760px;margin-top:20px;font-size:16px;line-height:1.9;color:var(--c-text-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:500;background:var(--c-surface);border:1px solid var(--c-border-strong);color:var(--c-primary);
}
.pill-accent{background:var(--c-accent-soft);border-color:rgba(242,112,74,.24);color:var(--c-accent-hover);}

/* ============ 通用板块标题 ============ */
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-secondary);
  letter-spacing:1px;margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--c-primary-deep);}
.section-head p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ============ 对照卡 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:30px 28px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-border-strong);}
.compare-card.do{border-top:3px solid var(--c-secondary);}
.compare-card.avoid{border-top:3px solid var(--c-accent);}
.compare-card h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--c-primary-deep);}
.compare-card .card-note{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-text-3);}
.compare-list{margin-top:20px;}
.compare-list li{
  display:flex;gap:12px;padding:13px 0;font-size:15px;line-height:1.75;color:var(--c-text-2);
  border-bottom:1px dashed rgba(22,110,140,.14);
}
.compare-list li:last-child{border-bottom:none;padding-bottom:0;}
.mark{
  flex-shrink:0;width:22px;height:22px;margin-top:4px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;font-weight:700;
}
.mark.ok{background:var(--c-primary-soft);color:var(--c-primary);}
.mark.no{background:var(--c-accent-soft);color:var(--c-accent-hover);}

/* ============ 自检清单 ============ */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.check-card{
  display:flex;gap:18px;background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card);border-color:var(--c-border-strong);}
.check-card .num{
  flex-shrink:0;width:40px;height:40px;border-radius:50%;
  border:1.5px solid var(--c-secondary);color:var(--c-primary);
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.check-card h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--c-text);}
.check-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ============ 关键环节说明 ============ */
.spec-block{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-block);box-shadow:var(--sh-card);padding:10px 32px;}
.spec-row{
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;
  padding:26px 0;border-top:1px solid var(--c-border);
}
.spec-row:first-child{border-top:none;}
.spec-row dt{font-size:16px;font-weight:600;color:var(--c-primary-deep);}
.spec-row dt span{display:block;margin-top:8px;font-size:13px;font-weight:500;color:var(--c-secondary);}
.spec-row dd{font-size:15px;line-height:1.85;color:var(--c-text-2);}
.spec-row dd strong{color:var(--c-text);font-weight:600;}

/* ============ 处理路径图文 ============ */
.path-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center;}
.path-figure{position:relative;}
.path-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:var(--sh-card);}
.path-figure figcaption{margin-top:14px;font-size:13px;color:var(--c-text-3);text-align:center;}
.steps{display:grid;gap:22px;}
.step{display:flex;gap:18px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);}
.step .snum{
  flex-shrink:0;width:36px;height:36px;border-radius:50%;border:1.5px dashed var(--c-secondary);
  display:grid;place-items:center;font-size:14px;font-weight:700;color:var(--c-primary);
}
.step h3{font-size:17px;font-weight:600;line-height:1.5;}
.step p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start;}
.faq-intro h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--c-primary-deep);}
.faq-intro p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--c-text-2);}
.faq-intro .faq-tip{
  margin-top:24px;background:var(--c-primary-soft);border-radius:var(--r-img);
  padding:18px 20px;font-size:14px;line-height:1.8;color:var(--c-primary-deep);
}
.faq-list{display:grid;gap:14px;}
.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:var(--c-border-strong);}
.faq-item.open{box-shadow:var(--sh-card);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;
  background:none;border:none;cursor:pointer;padding:20px 22px;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--c-text);
}
.faq-q .qno{flex-shrink:0;font-size:14px;font-weight:700;color:var(--c-secondary);margin-top:2px;}
.faq-q .sign{
  flex-shrink:0;margin-left:auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--c-border-strong);display:grid;place-items:center;
  font-size:16px;line-height:1;color:var(--c-primary);
  transition:transform .22s ease,background .2s ease,color .2s ease;
}
.faq-item.open .faq-q .sign{transform:rotate(45deg);background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 22px 22px 52px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ============ CTA 条 ============ */
.cta-strip{
  background:linear-gradient(100deg,var(--c-primary-soft) 0%,#F2F8FA 60%,var(--c-surface) 100%);
  border:1px solid var(--c-border);border-radius:var(--r-block);
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-strip h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;color:var(--c-primary-deep);}
.cta-strip p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-text-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-primary-deep);color:#fff;margin-top:calc(var(--sp-section) - 24px);
}
.footer-wave{
  display:block;position:absolute;top:-26px;left:0;width:100%;height:26px;
  color:var(--c-primary-deep);line-height:0;
}
.footer-brand-main{font-size:17px;font-weight:700;color:#fff;line-height:1.2;}
.footer-brand-sub{font-size:12px;color:#9FC0CC;letter-spacing:2px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:#B9D2DB;padding:5px 0;transition:color .2s ease,padding-left .2s ease;}
.footer-link:hover{color:#fff;padding-left:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#9FC0CC;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  height:50px;padding:0 26px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 14px 30px -12px rgba(217,90,54,.85);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .2s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--c-accent-hover);transform:translateY(-1px);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sp-section:76px;}
  .compare{grid-template-columns:1fr;}
  .path-layout,.faq-layout{grid-template-columns:1fr;gap:32px;}
  .checklist{grid-template-columns:1fr;}
}
@media (max-width:768px){
  :root{--sp-section:56px;}
  .header-inner{height:66px;}
  .brand-main{font-size:17px;}
  .brand-sub{font-size:11px;letter-spacing:1.5px;}
  .page-hero-inner{padding:26px 0 48px;}
  .section-head{margin-bottom:30px;}
  .spec-block{padding:6px 20px;}
  .spec-row{grid-template-columns:1fr;gap:10px;padding:20px 0;}
  .cta-strip{padding:26px 22px;}
  .float-cta{
    left:0;right:0;bottom:0;height:auto;padding:16px 20px;
    border-radius:0;padding-bottom:calc(16px + env(safe-area-inset-bottom));
    transform:translateY(100%);box-shadow:0 -8px 24px -12px rgba(15,79,102,.45);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
  .site-footer{margin-top:calc(var(--sp-section) - 16px);padding-bottom:64px;}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .compare-card{padding:24px 20px;}
  .faq-a-inner{padding-left:22px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#166E8C;
  --c-primary-deep:#0F4F66;
  --c-primary-soft:#E7F2F5;
  --c-accent:#F2704A;
  --c-accent-hover:#D95A36;
  --c-secondary:#2FB8A8;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(22,110,140,.10);
  --c-text:#1F2A2E;
  --c-text-2:#5A6B72;
  --c-text-3:#8A9AA0;
  --r-card:16px;
  --r-block:20px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,79,102,.06);
  --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
  --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-secondary) 100%);
  box-shadow:0 6px 14px -6px rgba(22,110,140,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:18px;font-weight:700;color:var(--c-primary-deep);letter-spacing:.5px;}
.brand-sub{font-size:12px;font-weight:500;color:var(--c-text-3);letter-spacing:1.6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:16px;right:16px;}
.nav-link[aria-current="page"]{
  color:var(--c-primary-deep);background:var(--c-primary-soft);font-weight:600;
}
.nav-link[aria-current="page"]::after{left:50%;right:50%;}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:0 26px;height:46px;line-height:1;
  cursor:pointer;border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(242,112,74,.85);}
.btn-accent:hover{background:var(--c-accent-hover);box-shadow:0 14px 26px -12px rgba(242,112,74,.9);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);}
.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-primary-deep);
}
.mobile-panel{
  display:none;border-top:1px solid var(--c-line);background:#fff;
  padding:12px 0 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-link{
  display:block;padding:12px 4px;font-size:16px;font-weight:500;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-link:last-of-type{border-bottom:none;}
.mobile-link[aria-current="page"]{color:var(--c-primary);font-weight:600;}
.mobile-actions{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.mobile-actions .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:14px;color:var(--c-text-3);}
.crumb a{color:var(--c-primary);font-weight:500;}
.crumb a:hover{color:var(--c-primary-deep);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{margin:0 8px;color:var(--c-text-3);}
.crumb .now{color:var(--c-text-2);}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  border-radius:var(--r-block);
  margin-top:24px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F8FA 100%);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-card);
}
.cat-hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,184,168,.14) 0%,rgba(47,184,168,0) 70%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:36px;padding:44px 32px;}
@media(min-width:1024px){
  .cat-hero-inner{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;padding:56px 48px;align-items:center;}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:600;letter-spacing:.5px;
  padding:6px 14px;border-radius:999px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--c-secondary);}
.page-h1{
  margin:20px 0 0;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;font-weight:700;color:var(--c-primary-deep);
  letter-spacing:-.4px;
}
.lead{margin:18px 0 0;font-size:16px;line-height:1.9;color:var(--c-text-2);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--c-line);border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--c-text-2);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--c-secondary);display:inline-block;}
.hero-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;background:#fff;
  box-shadow:var(--sh-card);border:1px solid var(--c-line);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ---------- 通用板块 ---------- */
.section{padding-top:var(--sp-section);}
@media(max-width:768px){.section{padding-top:60px;}}
.section-head{max-width:720px;}
.section-title{
  margin:0;font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--c-primary-deep);
}
.section-sub{margin:14px 0 0;font-size:15px;line-height:1.85;color:var(--c-text-2);}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-secondary);
  letter-spacing:.6px;margin-bottom:12px;
}

/* ---------- 卡片 ---------- */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.22);}
.card-title{margin:0;font-size:19px;font-weight:600;color:var(--c-text);}
.card-text{margin:12px 0 0;font-size:14px;line-height:1.8;color:var(--c-text-2);}
.icon-box{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:18px;font-weight:700;
}
.point-list{margin:16px 0 0;padding:0;list-style:none;}
.point-list li{
  position:relative;padding-left:24px;margin-bottom:10px;
  font-size:14px;line-height:1.8;color:var(--c-text-2);
}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:3px;
  background:var(--c-secondary);opacity:.85;
}

/* ---------- 设备标签切换 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tab-btn{
  border:1.5px solid var(--c-line);background:#fff;color:var(--c-text-2);
  border-radius:999px;padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer;
  transition:all .18s ease;
}
.tab-btn:hover{color:var(--c-primary);border-color:rgba(22,110,140,.35);}
.tab-btn[aria-selected="true"]{
  background:var(--c-primary);border-color:var(--c-primary);color:#fff;
  box-shadow:0 10px 20px -12px rgba(22,110,140,.8);
}
.tab-panel{display:none;margin-top:28px;}
.tab-panel.is-active{display:block;}
.device-grid{display:grid;grid-template-columns:1fr;gap:26px;align-items:start;}
@media(min-width:1024px){.device-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:32px;}}
.device-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);background:#fff;}
.device-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.device-figure figcaption{padding:14px 18px;font-size:13px;color:var(--c-text-3);border-top:1px solid var(--c-line);}
.badge{
  display:inline-block;background:rgba(47,184,168,.14);color:#1D7E74;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;letter-spacing:.3px;
}
.device-title{margin:16px 0 0;font-size:20px;font-weight:600;color:var(--c-primary-deep);}

/* ---------- 2×2 非等宽卡组 ---------- */
.asym-grid{display:grid;grid-template-columns:1fr;gap:22px;margin-top:34px;}
@media(min-width:768px){
  .asym-grid{grid-template-columns:repeat(6,1fr);}
  .asym-a{grid-column:span 4;}
  .asym-b{grid-column:span 2;}
  .asym-c{grid-column:span 2;}
  .asym-d{grid-column:span 4;}
}
.spec-row{display:flex;gap:16px;align-items:flex-start;}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:24px;margin-top:34px;position:relative;}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr);gap:30px;}}
.step{position:relative;padding-top:8px;}
.step-num{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:2px solid var(--c-secondary);color:#1D7E74;font-weight:700;font-size:15px;background:#fff;
}
.step::after{
  content:"";position:absolute;top:26px;left:48px;right:-18px;border-top:1px dashed rgba(22,110,140,.28);
  display:none;
}
@media(min-width:768px){
  .step:not(:last-child)::after{display:block;}
}
.step-title{margin:14px 0 0;font-size:17px;font-weight:600;color:var(--c-text);}
.step-text{margin:8px 0 0;font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(2,1fr);gap:0 0;margin-top:30px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-block);box-shadow:var(--sh-card);overflow:hidden;
}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr);}}
.stat{
  padding:26px 20px;text-align:center;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
@media(min-width:768px){.stat{border-bottom:none;}.stat:last-child{border-right:none;}}
.stat-num{font-size:32px;font-weight:700;color:var(--c-primary);line-height:1.1;}
.stat-label{margin-top:8px;font-size:13px;color:var(--c-text-3);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:28px;margin-top:32px;}
@media(min-width:1024px){.faq-layout{grid-template-columns:5fr 7fr;gap:44px;align-items:start;}}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:rgba(22,110,140,.22);box-shadow:var(--sh-card);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;justify-content:space-between;
  background:transparent;border:none;cursor:pointer;text-align:left;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--c-text);
}
.faq-index{color:var(--c-secondary);font-weight:700;flex-shrink:0;}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
  font-size:16px;line-height:1;font-weight:600;
  transition:transform .22s ease,background-color .22s ease,color .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary-soft);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a-inner{padding:0 22px 20px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}
.side-card{
  background:var(--c-primary-soft);border-radius:var(--r-block);padding:26px;
  border:1px solid var(--c-line);
}
.side-card .side-title{font-size:17px;font-weight:700;color:var(--c-primary-deep);margin:0;}
.quick-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-input);
  padding:13px 16px;margin-top:12px;font-size:14px;font-weight:500;color:var(--c-text-2);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.quick-link:hover{color:var(--c-primary);border-color:rgba(22,110,140,.3);transform:translateY(-1px);}
.quick-link span.arrow{color:var(--c-primary);font-weight:700;}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:var(--sp-section);
  background:linear-gradient(180deg,#FFFFFF 0%,#EEF6F8 100%);
  border:1px solid var(--c-line);border-radius:var(--r-block);box-shadow:var(--sh-card);
  padding:40px 32px;
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
}
@media(min-width:1024px){.cta-band{grid-template-columns:1.4fr .6fr;padding:48px 48px;}}
.cta-title{margin:0;font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--c-primary-deep);line-height:1.35;}
.cta-text{margin:12px 0 0;font-size:15px;color:var(--c-text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media(min-width:1024px){.cta-actions{justify-content:flex-end;}}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  padding:0 26px;height:52px;border-radius:999px;
  box-shadow:0 16px 30px -12px rgba(242,112,74,.9);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,background-color .3s ease,visibility .3s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
@media(max-width:767px){
  .float-cta{
    right:0;left:0;bottom:0;height:auto;padding:14px 20px calc(14px + env(safe-area-inset-bottom));
    border-radius:0;justify-content:center;font-size:15px;
  }
  .float-cta.is-visible{transform:translateY(0);}
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sp-section);
  background:var(--c-primary-deep);
  color:#DCEAF0;
  position:relative;
}
.footer-wave{display:block;width:100%;height:26px;color:var(--c-bg);}
.footer-brand-main{font-size:17px;font-weight:700;color:#fff;letter-spacing:.5px;}
.footer-brand-sub{font-size:12px;color:#9CC0CC;letter-spacing:1.4px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.5px;}
.footer-link{
  display:block;font-size:14px;color:#B9D2DB;padding:5px 0;
  transition:color .18s ease,transform .18s ease;
}
.footer-link:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#9CC0CC;}

/* ---------- 响应式微调 ---------- */
@media(max-width:767px){
  .header-inner{min-height:66px;}
  .brand-main{font-size:16px;}
  .cat-hero-inner{padding:32px 22px;}
  .card{padding:22px;}
  .cta-band{padding:32px 22px;}
  .stat-num{font-size:26px;}
  body{font-size:15px;}
}

/* roulang page: category4 */
:root{
    --c-primary:#166E8C;
    --c-primary-deep:#0F4F66;
    --c-primary-soft:#E7F2F5;
    --c-accent:#F2704A;
    --c-accent-hover:#D95A36;
    --c-secondary:#2FB8A8;
    --c-bg:#F6F9FA;
    --c-surface:#FFFFFF;
    --c-border:rgba(22,110,140,.10);
    --c-text:#1F2A2E;
    --c-text-2:#5A6B72;
    --c-text-3:#8A9AA0;
    --r-card:16px;
    --r-block:20px;
    --r-img:12px;
    --r-input:10px;
    --sh-1:0 1px 2px rgba(15,79,102,.06);
    --sh-card:0 12px 28px -12px rgba(15,79,102,.18);
    --sh-hover:0 18px 40px -14px rgba(15,79,102,.28);
    --sp-section:96px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  a{text-decoration:none;color:inherit;}
  .wrap{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
  .section{padding:var(--sp-section) 0;}
  .section-tight{padding:64px 0;}

  /* 顶部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    backdrop-filter:saturate(160%) blur(8px);
    border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-1);
  }
  .brand-mark{
    width:34px;height:34px;border-radius:9px;
    background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-secondary) 100%);
    display:inline-block;position:relative;flex:0 0 auto;
  }
  .brand-mark::after{
    content:"";position:absolute;left:7px;right:7px;bottom:11px;height:2px;
    background:rgba(255,255,255,.85);border-radius:2px;
    box-shadow:0 -5px 0 rgba(255,255,255,.55);
  }
  .brand-main{font-size:18px;font-weight:700;color:var(--c-primary-deep);line-height:1.2;letter-spacing:.2px;}
  .brand-sub{font-size:12px;color:var(--c-text-2);line-height:1.2;letter-spacing:1.2px;}
  .nav-link{
    position:relative;display:inline-block;
    padding:9px 14px;border-radius:999px;
    font-size:15px;color:var(--c-text-2);
    transition:color .2s ease,background-color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
    background:var(--c-primary);transform:scaleX(0);transform-origin:center;
    transition:transform .2s ease;border-radius:2px;
  }
  .nav-link:hover{color:var(--c-primary-deep);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link[aria-current="page"]{
    background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;
  }
  .nav-link[aria-current="page"]::after{transform:scaleX(1);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-weight:600;font-size:15px;
    padding:12px 26px;border:1.5px solid transparent;
    transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
    cursor:pointer;
  }
  .btn:active{transform:translateY(1px);}
  .btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
  .btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(217,90,54,.75);}
  .btn-accent:hover{background:var(--c-accent-hover);box-shadow:var(--sh-hover);}
  .btn-accent:focus-visible{outline-color:var(--c-accent);}
  .btn-outline{border-color:var(--c-primary);color:var(--c-primary-deep);background:#fff;}
  .btn-outline:hover{background:var(--c-primary-soft);}
  .btn-ghost{color:var(--c-primary-deep);border-color:var(--c-border);background:#fff;}
  .btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
  .btn-lg{padding:14px 30px;font-size:16px;}

  .mobile-panel{display:none;}
  .mobile-panel.open{display:block;}
  .mobile-link{
    display:block;padding:13px 4px;font-size:16px;color:var(--c-text-2);
    border-bottom:1px dashed rgba(22,110,140,.16);
  }
  .mobile-link[aria-current="page"]{color:var(--c-primary-deep);font-weight:600;}

  /* 面包屑 */
  .crumb{font-size:14px;color:var(--c-text-3);}
  .crumb a{color:var(--c-primary);}
  .crumb a:hover{color:var(--c-primary-deep);text-decoration:underline;}
  .crumb span.sep{margin:0 8px;color:var(--c-text-3);}

  /* Hero 横幅 */
  .page-hero{
    background-image:linear-gradient(105deg,rgba(255,255,255,.94) 0%,rgba(231,242,245,.90) 58%,rgba(246,249,250,.82) 100%),url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--c-border);
  }
  .page-hero-inner{padding:56px 0 60px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--c-primary-deep);
    background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;
  }
  .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c-secondary);display:inline-block;}
  h1.page-title{
    font-size:clamp(30px,4.2vw,48px);line-height:1.24;font-weight:700;
    color:var(--c-primary-deep);margin:20px 0 18px;letter-spacing:.2px;
  }
  .page-lead{
    font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:760px;margin:0;
  }
  h2.sec-title{
    font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;
    color:var(--c-primary-deep);margin:0 0 14px;
  }
  h3.card-title{font-size:19px;line-height:1.4;font-weight:600;color:var(--c-text);margin:0 0 8px;}
  .sec-sub{font-size:15px;color:var(--c-text-2);max-width:720px;margin:0;}

  .anchor-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .anchor-pill{
    display:inline-block;padding:8px 16px;border-radius:999px;font-size:14px;
    border:1px solid rgba(22,110,140,.22);color:var(--c-primary-deep);background:rgba(255,255,255,.8);
    transition:border-color .2s ease,color .2s ease,background-color .2s ease;
  }
  .anchor-pill:hover{border-color:var(--c-accent);color:var(--c-accent-hover);background:#fff;}

  /* 卡片通用 */
  .card{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
    box-shadow:var(--sh-card);padding:24px;
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.20);}
  .badge{
    display:inline-block;font-size:13px;font-weight:500;line-height:1.5;
    padding:3px 11px;border-radius:999px;background:rgba(47,184,168,.14);color:#1E8E81;
  }
  .badge-primary{background:var(--c-primary-soft);color:var(--c-primary-deep);}

  /* 快捷入口侧栏 */
  .side-card{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-block);
    box-shadow:var(--sh-card);padding:22px;
  }
  .side-title{font-size:15px;font-weight:600;color:var(--c-primary-deep);margin:0 0 14px;}
  .side-link{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:12px 14px;border-radius:var(--r-img);font-size:15px;color:var(--c-text-2);
    border:1px solid transparent;background:var(--c-bg);
    transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
    margin-bottom:10px;
  }
  .side-link:last-child{margin-bottom:0;}
  .side-link:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:rgba(22,110,140,.18);transform:translateX(2px);}
  .side-link .arrow{color:var(--c-secondary);font-weight:700;}
  .side-note{
    margin-top:16px;padding:14px 16px;border-radius:var(--r-img);
    background:var(--c-bg);border:1px dashed rgba(22,110,140,.22);
    font-size:14px;line-height:1.7;color:var(--c-text-2);
  }

  /* 手风琴 */
  .faq-item{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
    box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;
    transition:box-shadow .18s ease,border-color .18s ease;
  }
  .faq-item:hover{box-shadow:var(--sh-card);}
  .faq-item.active{border-color:rgba(22,110,140,.24);box-shadow:var(--sh-card);}
  .faq-q{
    width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;
    background:none;border:0;padding:20px 22px;cursor:pointer;
    font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);
    transition:color .18s ease;
  }
  .faq-q:hover{color:var(--c-primary-deep);}
  .faq-q:focus-visible{outline:2px solid var(--c-primary);outline-offset:-3px;}
  .faq-num{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    border:1.5px solid var(--c-secondary);color:#1E8E81;
    font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
    margin-top:2px;
  }
  .faq-icon{
    flex:0 0 auto;margin-left:auto;width:24px;height:24px;position:relative;margin-top:2px;
    transition:transform .22s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  }
  .faq-icon::before{left:3px;right:3px;top:11px;height:2px;}
  .faq-icon::after{top:3px;bottom:3px;left:11px;width:2px;}
  .faq-item.active .faq-icon{transform:rotate(45deg);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .22s ease;
  }
  .faq-a-inner{
    padding:0 22px 22px 62px;font-size:15px;line-height:1.8;color:var(--c-text-2);
  }
  .faq-a-inner p{margin:0 0 10px;}
  .faq-a-inner p:last-child{margin-bottom:0;}
  .faq-a-inner strong{color:var(--c-primary-deep);font-weight:600;}

  /* 步骤条 */
  .step-row{display:grid;gap:24px;grid-template-columns:repeat(4,1fr);}
  .step-item{position:relative;padding-top:6px;}
  .step-circle{
    width:36px;height:36px;border-radius:50%;border:1.5px solid var(--c-secondary);
    color:#1E8E81;font-weight:700;font-size:15px;
    display:flex;align-items:center;justify-content:center;background:#fff;
  }
  .step-item h3{font-size:17px;font-weight:600;color:var(--c-primary-deep);margin:14px 0 8px;}
  .step-item p{font-size:14px;line-height:1.75;color:var(--c-text-2);margin:0;}
  .step-line{
    position:absolute;top:24px;left:52px;right:-24px;height:0;
    border-top:1px dashed rgba(22,110,140,.28);
  }
  .step-item:last-child .step-line{display:none;}

  /* 对照卡 */
  .tip-card{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--sh-1);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .tip-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(22,110,140,.20);}
  .tip-tag{
    display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;
    color:var(--c-primary-deep);background:var(--c-primary-soft);border-radius:999px;padding:4px 12px;
    margin-bottom:12px;
  }
  .tip-card h3{font-size:17px;font-weight:600;margin:0 0 8px;color:var(--c-text);}
  .tip-card p{font-size:14px;line-height:1.75;color:var(--c-text-2);margin:0;}

  .band{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-block);
    box-shadow:var(--sh-card);padding:28px;
  }
  .list-check{list-style:none;margin:0;padding:0;}
  .list-check li{
    display:flex;gap:12px;align-items:flex-start;
    padding:12px 0;border-bottom:1px dashed rgba(22,110,140,.14);
    font-size:15px;line-height:1.78;color:var(--c-text-2);
  }
  .list-check li:last-child{border-bottom:0;padding-bottom:0;}
  .list-check li .tick{color:var(--c-secondary);font-weight:700;flex:0 0 auto;}

  .cta-band{
    background:linear-gradient(100deg,var(--c-primary-soft) 0%,#F3FAFB 100%);
    border:1px solid var(--c-border);border-radius:var(--r-block);
    padding:36px;display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
  }
  .cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--c-primary-deep);margin:0 0 8px;}
  .cta-band p{font-size:15px;color:var(--c-text-2);margin:0;max-width:620px;}

  .figure{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-card);}
  .figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}

  /* 浮动 CTA */
  .float-cta{
    position:fixed;right:26px;bottom:26px;z-index:70;
    background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
    padding:13px 24px;border-radius:999px;box-shadow:0 14px 30px -12px rgba(217,90,54,.8);
    opacity:0;transform:translateY(12px);pointer-events:none;
    transition:opacity .3s ease,transform .3s ease,background-color .18s ease;
  }
  .float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-cta:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
  .float-cta:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

  /* 页脚 */
  .site-footer{
    position:relative;background:var(--c-primary-deep);color:#DCEBF0;margin-top:0;
  }
  .footer-wave{display:block;width:100%;height:26px;color:var(--c-bg);}
  .footer-brand-main{font-size:17px;font-weight:700;color:#fff;line-height:1.25;}
  .footer-brand-sub{font-size:12px;color:#9FC4CF;letter-spacing:1.2px;line-height:1.25;}
  .site-footer .brand-mark{background:linear-gradient(140deg,#2FB8A8 0%,#7FD9CD 100%);}
  .footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-link{display:block;font-size:14px;color:#B9D2DB;padding:5px 0;transition:color .18s ease;}
  .footer-link:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#9FC4CF;}

  @media (max-width:1024px){
    :root{--sp-section:72px;}
    .step-row{grid-template-columns:repeat(2,1fr);}
    .step-item:nth-child(2) .step-line{display:none;}
  }
  @media (max-width:768px){
    :root{--sp-section:60px;}
    .wrap{padding-left:20px;padding-right:20px;}
    .page-hero-inner{padding:40px 0 46px;}
    .faq-a-inner{padding:0 18px 20px 18px;}
    .faq-q{padding:18px;font-size:16px;}
    .cta-band{padding:26px;}
    .float-cta{
      right:0;left:0;bottom:0;border-radius:0;text-align:center;
      padding:15px 20px calc(15px + env(safe-area-inset-bottom));
    }
  }
  @media (max-width:520px){
    .step-row{grid-template-columns:1fr;}
    .step-line{display:none;}
    .band{padding:22px;}
  }