/* roulang page: index */
:root{
  --ink-900:#0B1F1A;
  --ink-700:#1D3A32;
  --brand-600:#0E7A5F;
  --brand-500:#12A07B;
  --brand-100:#E4F3EE;
  --accent-500:#FF6A2B;
  --accent-100:#FFEDE3;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --line:#E3E0D8;
  --muted:#6B7A74;
  --ok:#1E9E6A;
  --warn:#C9821B;
  --err:#C0392B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --e1:0 1px 2px rgba(11,31,26,.06);
  --e2:0 8px 24px rgba(11,31,26,.08);
  --e3:0 18px 48px rgba(11,31,26,.14);
  --sec:88px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.72;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.eyebrow{
  font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand-600);display:inline-block;
}
.section{padding:var(--sec) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-title{font-size:30px;font-weight:800}
.section-sub{color:var(--muted);font-size:15px;margin-top:8px;max-width:56ch}
.text-link{color:var(--brand-600);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.text-link span{transition:transform .2s ease-out}
.text-link:hover span{transform:translateX(3px)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 4px 0 var(--ink-900)}
.btn-primary:hover{background:#ff7c45;transform:translateY(-1px);box-shadow:0 6px 0 var(--ink-900)}
.btn-primary:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink-900)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);box-shadow:var(--e2)}
.btn-ghost{background:transparent;color:var(--brand-600);padding:8px 4px}
.btn-ghost span{transition:transform .2s ease-out}
.btn-ghost:hover span{transform:translateX(3px)}
.btn-sm{min-height:38px;padding:9px 16px;font-size:14px}
.btn-xs{min-height:32px;padding:7px 14px;font-size:13px;box-shadow:none}
.btn-xs:hover{transform:none;box-shadow:none}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  background:var(--brand-100);color:var(--brand-600);
}
.badge-accent{background:var(--accent-100);color:#C24A12}
.badge-ok{background:rgba(30,158,106,.12);color:var(--ok)}
.badge-muted{background:#EFEDE6;color:var(--muted)}

/* topbar */
.topbar{background:var(--ink-900);color:#BBD3CB;font-size:13px;min-height:36px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:none}
.topbar-host{color:#8FA9A1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;flex:none}
.topbar-right a{color:#E6F1EC;font-weight:600}
.topbar-right a:hover{color:var(--brand-500)}
.topbar-sep{width:1px;height:14px;background:rgba(255,255,255,.22)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-stuck{box-shadow:var(--e2)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-600);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.logo-mark svg{width:19px;height:19px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:16px;font-weight:800;letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.06em}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-list a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-700);
  padding:6px 0;transition:color .18s ease-out;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-list a:hover{color:var(--brand-600)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.active{color:var(--brand-600)}
.nav-list a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;
  color:var(--ink-700);transition:background .18s ease-out,color .18s ease-out;
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-600)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-sm);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .24s ease-out,opacity .24s ease-out}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:70;background:var(--surface);
  padding:104px 20px 32px;overflow-y:auto;
  transform:translateX(100%);opacity:0;visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
}
.drawer.is-open{transform:translateX(0);opacity:1;visibility:visible}
.drawer-group+.drawer-group{margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.drawer-title{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line)}
.drawer-link:last-child{border-bottom:0}
.drawer-link.active{color:var(--brand-600)}
.drawer-cta{margin-top:24px;display:grid;gap:12px}

/* countdown bar */
.countbar{background:var(--ink-900);color:#E7F2ED;min-height:48px;display:flex;align-items:center}
.countbar .container{display:flex;align-items:center;gap:20px;min-height:48px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.countbar-tag{
  font-size:13px;font-weight:700;letter-spacing:.04em;
  background:rgba(18,160,123,.2);color:#9BE0C8;padding:4px 10px;border-radius:var(--r-pill);flex:none;
}
.countdown{display:flex;align-items:center;gap:8px;margin-right:auto}
.cd-block{display:flex;flex-direction:column;align-items:center;min-width:52px;padding:3px 8px;border-radius:8px;background:rgba(255,255,255,.08)}
.cd-block b{font-size:17px;font-weight:800;line-height:1.2;font-variant-numeric:tabular-nums}
.cd-block i{font-style:normal;font-size:11px;color:#93ADA4;letter-spacing:.04em}
.cd-over{font-size:14px;color:#9BE0C8;font-weight:600;margin-right:auto}

/* hero */
.hero{padding:56px 0 var(--sec);position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;
  background-image:radial-gradient(var(--brand-600) 1.2px,transparent 1.2px);
  background-size:16px 16px;opacity:.1;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative}
.hero h1{font-size:44px;font-weight:900;line-height:1.15;letter-spacing:-.02em;margin-top:14px}
.hero-sub{font-size:19px;color:var(--ink-700);margin-top:18px;max-width:44ch}
.hero-lead{font-size:16px;color:var(--muted);margin-top:14px;max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.trust{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-700)}
.trust svg{width:18px;height:18px;color:var(--brand-600);flex:none}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--e3)}
.float-card{
  position:absolute;left:-16px;bottom:-20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--e2);padding:16px 18px;min-width:210px;
}
.float-num{font-size:26px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.1}
.float-label{font-size:13px;color:var(--muted);margin-top:2px}
.float-link{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;font-weight:700;color:var(--accent-500)}
.float-link span{transition:transform .2s ease-out}
.float-link:hover span{transform:translateX(3px)}

/* points band */
.point-band{border-top:1px solid var(--line)}
.point-grid{display:grid;grid-template-columns:1fr 1fr;column-gap:48px}
.point{
  display:flex;gap:22px;padding:30px 0;border-bottom:1px solid var(--line);align-items:flex-start;
}
.point:first-child{grid-column:1 / -1}
.point-num{
  font-size:38px;font-weight:900;line-height:1;flex:none;
  color:var(--brand-100);-webkit-text-stroke:1.5px var(--brand-600);
}
.point-title{font-size:19px;font-weight:800}
.point-text{font-size:15px;color:var(--muted);margin-top:8px;max-width:60ch}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);counter-reset:step}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--e1);transition:box-shadow .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.step:hover{box-shadow:var(--e2);border-color:#CFE6DD;transform:translateY(-2px)}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-600);font-weight:800;font-size:14px;margin-bottom:16px;
}
.step h3{font-size:19px;font-weight:800}
.step p{font-size:15px;color:var(--muted);margin-top:10px}

/* bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:180px;gap:16px}
.bento-item{position:relative;overflow:hidden;border-radius:var(--r-md);background:var(--ink-700)}
.bento-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.bento-item::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,31,26,0) 42%,rgba(11,31,26,.78) 100%);
}
.bento-item:hover img{transform:scale(1.04)}
.bento-item figcaption{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff;
  font-size:15px;font-weight:700;line-height:1.4;
}
.bento-item .bento-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;
  background:rgba(255,106,43,.92);color:#fff;
}
.bento-item.big{grid-column:span 2;grid-row:span 2}
.bento-item.wide{grid-column:span 2}

/* entry cta */
.entry-panel{
  background:var(--ink-900);color:#E9F4EF;border-radius:var(--r-lg);
  padding:48px;display:grid;grid-template-columns:1fr 400px;gap:48px;align-items:center;
  position:relative;overflow:hidden;
}
.entry-panel::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:18px 18px;opacity:.08;pointer-events:none;
}
.entry-panel h2{font-size:30px;font-weight:800;color:#fff}
.entry-panel p{margin-top:14px;color:#B4CCC3;font-size:16px;max-width:52ch}
.entry-list{margin-top:22px;display:grid;gap:10px}
.entry-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#CFE3DB}
.entry-list svg{width:18px;height:18px;color:var(--brand-500);flex:none;margin-top:4px}
.entry-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:24px;position:relative;z-index:2}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:700;color:#CFE3DB;margin-bottom:8px}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.96);color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input::placeholder{color:#93A29B}
.field input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(18,160,123,.18)}
.field .hint{font-size:12px;color:#93ADA4;margin-top:6px}
.form-note{font-size:12px;color:#8FA9A1;margin-top:14px;line-height:1.6}

/* latest cms */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--e1);overflow:hidden;
  transition:box-shadow .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.card:hover{box-shadow:var(--e2);border-color:#CFE6DD;transform:translateY(-2px)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--brand-100)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:18px;font-weight:800;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.empty-state{
  grid-column:1 / -1;border:1px dashed var(--line);border-radius:var(--r-md);background:var(--surface);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;color:var(--brand-600);opacity:.4;margin:0 auto 16px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* faq */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;column-gap:40px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease-out;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-icon::after{transform:rotate(90deg)}
.faq-item.open .faq-q{color:var(--brand-600)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{font-size:15px;color:var(--muted);padding:0 34px 20px 0}

/* footer */
.site-footer{background:var(--ink-900);color:#B4CCC3;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-name{color:#fff}
.footer-brand .logo-sub{color:#8FA9A1}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.75;color:#93ADA4;max-width:34ch}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:#B4CCC3}
.footer-col a{display:inline-block;transition:color .18s ease-out,transform .18s ease-out}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px)}
.footer-contact p{font-size:14px;color:#93ADA4;margin-bottom:18px}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7E978F}

/* to top */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:46px;height:46px;border-radius:var(--r-pill);background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--e2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-500)}
.to-top svg{width:20px;height:20px}

/* skeleton */
.skeleton{background:var(--paper);border-radius:6px;position:relative;overflow:hidden}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);
  transform:translateX(-100%);animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%)}}

@media (max-width:1279px){
  .bento{grid-template-columns:repeat(3,1fr)}
  .entry-panel{grid-template-columns:1fr 360px;gap:36px;padding:40px}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .container{padding:0 24px}
  .nav-list,.nav-actions .btn,.nav-actions .icon-btn{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:36px}
  .hero-media img{aspect-ratio:16/9}
  .float-card{left:auto;right:16px;bottom:-18px}
  .point-grid{grid-template-columns:1fr}
  .point:first-child{grid-column:auto}
  .steps{grid-template-columns:1fr}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:160px}
  .entry-panel{grid-template-columns:1fr;padding:36px}
  .faq-grid{grid-template-columns:1fr;column-gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  :root{--sec:44px;--gap:16px}
  body{font-size:16px}
  .container{padding:0 20px}
  .section-title{font-size:24px}
  .hero{padding:32px 0 var(--sec)}
  .hero h1{font-size:30px}
  .hero-sub{font-size:17px}
  .hero-cta .btn{width:100%}
  .trust-row{gap:16px}
  .countbar .container{gap:12px;min-height:56px}
  .countbar-tag{order:1}
  .countbar .btn{order:2;margin-left:auto}
  .countdown{order:3;width:100%;margin-right:0}
  .cd-block{min-width:0;flex:1}
  .cd-block b{font-size:16px}
  .topbar-left .topbar-host{display:none}
  .topbar-right .topbar-sep{display:none}
  .card-grid{grid-template-columns:1fr}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:140px}
  .bento-item.big{grid-column:span 2;grid-row:span 1}
  .bento-item.wide{grid-column:span 2}
  .entry-panel{padding:28px 22px}
  .entry-panel h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom .container{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B1F1A;
  --ink-700:#1D3A32;
  --brand-600:#0E7A5F;
  --brand-500:#12A07B;
  --brand-100:#E4F3EE;
  --accent-500:#FF6A2B;
  --accent-100:#FFEDE3;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --line:#E3E0D8;
  --muted:#6B7A74;
  --ok:#1E9E6A;
  --warn:#C9821B;
  --err:#C0392B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --e1:0 1px 2px rgba(11,31,26,.06);
  --e2:0 8px 24px rgba(11,31,26,.08);
  --e3:0 18px 48px rgba(11,31,26,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.72;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,transform .18s ease}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.2;font-weight:800}
h1{font-size:44px;font-weight:900;letter-spacing:-.01em}
h2{font-size:30px}
h3{font-size:22px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head .eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.12em;
  font-weight:700;
  color:var(--brand-600);
  background:var(--brand-100);
  padding:5px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* 顶部信息条 */
.topbar{background:var(--ink-900);color:#D8E6E1;font-size:13px;height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-left i{color:var(--brand-500);font-size:13px}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em}
.topbar-tip{color:#8FA9A1;border-left:1px solid rgba(255,255,255,.18);padding-left:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.topbar-right a{color:#D8E6E1;font-weight:600}
.topbar-right a:hover{color:#fff}
.topbar-right .divider{width:2px;height:12px;background:rgba(255,255,255,.22);display:inline-block}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--e2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:11px;color:inherit}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--brand-600),var(--brand-500));
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:var(--e1);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-name{font-size:18px;font-weight:900;color:var(--ink-900);letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.14em}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;
  font-size:15px;font-weight:600;color:var(--ink-700);
  border-radius:var(--r-sm);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-700);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600);box-shadow:var(--e1)}
.nav-toggle{display:none}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 24px;
  font-size:15px;font-weight:700;font-family:inherit;
  border-radius:var(--r-sm);border:1px solid transparent;
  cursor:pointer;text-align:center;
  transition:transform .16s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn i{font-size:14px}
.btn-primary{
  background:var(--accent-500);color:#fff;
  box-shadow:0 4px 0 var(--ink-900);
}
.btn-primary:hover{background:#FF7C44;color:#fff;transform:translateY(-1px);box-shadow:0 5px 0 var(--ink-900),var(--e2)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 0 var(--ink-900)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-700)}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);box-shadow:var(--e1)}
.btn-ghost{background:transparent;color:var(--brand-600);padding:12px 4px;min-height:44px}
.btn-ghost i{transition:transform .18s ease}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px;border-radius:8px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* 内页横幅 */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);
  min-height:340px;
  display:flex;align-items:center;
  padding:64px 0;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.78) 48%,rgba(11,31,26,.52) 100%);
}
.page-hero-inner{position:relative;z-index:2;max-width:820px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9FBAB2;margin-bottom:18px}
.crumbs a{color:#CBE0DA}
.crumbs a:hover{color:#fff}
.crumbs span.sep{opacity:.6}
.page-hero h1{color:#fff;font-size:42px;margin-bottom:16px}
.page-hero .lead{color:#D5E5E0;font-size:19px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-actions .btn-outline{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px}
.trust-item{display:flex;align-items:center;gap:8px;color:#C6DAD4;font-size:14px;font-weight:600}
.trust-item i{color:var(--brand-500)}

/* 布局 */
.layout{
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--e1);overflow:hidden;
}
.side-panel-head{
  padding:16px 18px;border-bottom:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--ink-900);letter-spacing:.06em;
}
.side-anchor{padding:10px}
.side-anchor a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:8px;
  font-size:14px;font-weight:600;color:var(--ink-700);
  border-left:3px solid transparent;
}
.side-anchor a:hover{background:var(--brand-100);color:var(--brand-600)}
.side-anchor a.active{border-left-color:var(--brand-600);color:var(--brand-600);background:var(--brand-100)}
.side-anchor a i{font-size:12px;color:var(--brand-500);width:14px}
.side-card{
  background:var(--ink-900);color:#D6E6E1;
  border-radius:var(--r-md);padding:22px;
}
.side-card h3{color:#fff;font-size:17px;margin-bottom:10px}
.side-card p{font-size:14px;color:#A9C0BA;margin-bottom:16px}
.side-card .btn{width:100%}
.side-stat{
  margin-top:18px;background:rgba(255,255,255,.07);
  border-radius:var(--r-sm);padding:14px 16px;
}
.side-stat strong{display:block;font-size:26px;color:#fff;font-weight:900;font-variant-numeric:tabular-nums}
.side-stat span{font-size:12px;color:#9FBAB2}

/* 卡片网格 */
.cards-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--e1);overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:#B9DCD1;box-shadow:var(--e2);transform:translateY(-2px)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16 / 9;background:var(--brand-100)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(11,31,26,0),rgba(11,31,26,.55));
  opacity:0;transition:opacity .24s ease;
}
.card:hover .card-media::after{opacity:1}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);
  align-self:flex-start;
}
.badge-accent{background:var(--accent-100);color:#C24B12}
.badge-ok{background:#E3F4EC;color:var(--ok)}
.badge-muted{background:#EFEDE6;color:var(--muted)}
.card-title{font-size:19px;line-height:1.35}
.card-text{font-size:15px;color:var(--muted);line-height:1.7}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-foot a{font-weight:700;font-size:13px}

/* 步骤 */
.steps{display:flex;flex-direction:column;gap:0;margin-top:8px}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.step:last-child{border-bottom:none}
.step:hover{background:rgba(228,243,238,.5)}
.step-num{
  font-size:30px;font-weight:900;color:transparent;
  -webkit-text-stroke:1.5px var(--brand-600);
  font-variant-numeric:tabular-nums;line-height:1;
  padding-top:4px;
}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{font-size:15px;color:var(--muted)}

/* 场景（非对称） */
.scene-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--e1);
}
.scene-lead{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:0;border-bottom:1px solid var(--line);
}
.scene-lead-text{padding:32px}
.scene-lead-text .scene-index{
  font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--accent-500);margin-bottom:12px;
}
.scene-lead-text h3{font-size:24px;margin-bottom:12px}
.scene-lead-text p{color:var(--muted);font-size:16px}
.scene-lead-media{position:relative;min-height:240px}
.scene-lead-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.scene-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.scene-item{padding:26px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene-item:nth-child(3n){border-right:none}
.scene-item:nth-last-child(-n+3){border-bottom:none}
.scene-item h4{font-size:17px;font-weight:800;color:var(--ink-900);margin-bottom:8px}
.scene-item p{font-size:14px;color:var(--muted)}
.scene-item i{color:var(--brand-600);margin-bottom:12px;display:block;font-size:18px}

/* 提示条 */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--accent-100);border:1px solid #F7D3BF;
  border-radius:var(--r-md);padding:18px 20px;margin-top:24px;
}
.notice i{color:var(--accent-500);font-size:18px;margin-top:3px}
.notice p{font-size:15px;color:#8A3E17}

/* 常见提示列表 */
.tip-list{display:flex;flex-direction:column;gap:0;margin-top:20px}
.tip-row{
  display:grid;grid-template-columns:minmax(0,1fr) 140px 120px;
  gap:16px;align-items:center;
  padding:16px 18px;border-bottom:1px solid var(--line);
  position:relative;transition:background .18s ease;
}
.tip-row::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--brand-600);border-radius:3px;opacity:0;transition:opacity .18s ease;
}
.tip-row:hover{background:var(--brand-100)}
.tip-row:hover::before{opacity:1}
.tip-row:first-child{border-top:1px solid var(--line)}
.tip-name{font-weight:700;color:var(--ink-900);font-size:15px}
.tip-name small{display:block;font-weight:500;color:var(--muted);font-size:13px;margin-top:2px}
.tip-time{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}

/* FAQ */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 2px;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--brand-600);
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-100);border-color:var(--brand-600)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 2px 20px;font-size:15px;color:var(--muted);line-height:1.75}

/* CTA 面板 */
.cta-panel{
  position:relative;background:var(--ink-900);color:#D6E6E1;
  border-radius:var(--r-lg);overflow:hidden;
  padding:56px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);
  gap:48px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:18px 18px;opacity:.10;pointer-events:none;
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{color:#fff;font-size:32px;margin-bottom:14px}
.cta-panel p{color:#A9C0BA;font-size:16px;margin-bottom:22px}
.cta-points{display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:#C6DAD4}
.cta-points i{color:var(--brand-500)}
.cta-form{
  background:var(--surface);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--e3);
}
.cta-form label{display:block;font-size:13px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.field{margin-bottom:16px}
.field input{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:15px;font-family:inherit;color:var(--ink-900);background:var(--surface);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 4px rgba(14,122,95,.12);
}
.field input.error{border-color:var(--err);box-shadow:0 0 0 4px rgba(192,57,43,.10)}
.field .err-text{display:none;margin-top:6px;font-size:13px;color:var(--err)}
.field.has-error .err-text{display:block}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6}
.form-msg{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-sm);
  background:var(--brand-100);color:var(--brand-600);font-size:14px;font-weight:600;
}
.form-msg.show{display:block}
.cta-form .btn{width:100%}

/* 返回顶部 */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:48px;height:48px;border-radius:50%;
  border:none;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--e3);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,background .18s ease,visibility .22s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--brand-500)}

/* 页脚 */
.site-footer{background:var(--ink-900);color:#A9C0BA;margin-top:88px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-top:64px;padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-name{color:#fff}
.footer-brand .logo-sub{color:#8FA9A1}
.footer-brand p{font-size:14px;line-height:1.8;color:#8FA9A1;max-width:340px}
.footer-title{font-size:14px;color:#fff;font-weight:800;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{color:#A9C0BA;font-size:14px;display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-col ul a:hover{color:#7FE0C4;transform:translateX(2px)}
.footer-contact p{font-size:14px;color:#8FA9A1;margin-bottom:16px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7E958F}
.footer-bottom .container span{color:#7E958F}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:100;
  background:var(--surface);
  transform:translateX(100%);
  transition:transform .24s ease;
  display:flex;flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:26px}
.drawer-links a{
  padding:14px 12px;border-radius:var(--r-sm);
  font-size:16px;font-weight:700;color:var(--ink-700);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a:hover,.drawer-links a.active{background:var(--brand-100);color:var(--brand-600)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-bottom:10px}

@media (max-width:1279px){
  .page-hero h1{font-size:38px}
  .cta-panel{padding:44px}
}
@media (max-width:1023px){
  h1{font-size:34px}
  h2{font-size:26px}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .nav-menu,.nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static}
  .cards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-lead{grid-template-columns:minmax(0,1fr)}
  .scene-lead-media{min-height:200px;order:-1}
  .scene-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-item:nth-child(3n){border-right:1px solid var(--line)}
  .scene-item:nth-child(2n){border-right:none}
  .scene-item:nth-last-child(-n+3){border-bottom:1px solid var(--line)}
  .scene-item:nth-last-child(-n+2){border-bottom:none}
  .faq{grid-template-columns:minmax(0,1fr)}
  .cta-panel{grid-template-columns:minmax(0,1fr);gap:32px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-top:48px}
  .tip-row{grid-template-columns:minmax(0,1fr) 110px;row-gap:6px}
  .tip-row .tip-action{grid-column:2;justify-self:end}
}
@media (max-width:640px){
  body{font-size:16px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  .container{padding:0 20px}
  .section{padding:44px 0}
  .topbar{height:auto;padding:9px 0}
  .topbar-left .topbar-tip{display:none}
  .topbar-left{font-size:12px}
  .nav-inner{height:62px}
  .page-hero{min-height:0;padding:44px 0}
  .page-hero h1{font-size:29px}
  .page-hero .lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:14px 18px}
  .cards-grid{grid-template-columns:minmax(0,1fr)}
  .scene-list{grid-template-columns:minmax(0,1fr)}
  .scene-item{border-right:none !important;border-bottom:1px solid var(--line) !important}
  .scene-item:last-child{border-bottom:none !important}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .step-num{font-size:24px}
  .tip-row{grid-template-columns:minmax(0,1fr);}
  .tip-row .tip-action{grid-column:1;justify-self:start}
  .cta-panel{padding:26px 20px;border-radius:var(--r-md)}
  .cta-panel h2{font-size:24px}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom .container{flex-direction:column;gap:6px}
  .back-top{right:16px;bottom:16px}
}

/* roulang page: article */
:root{
  --ink-900:#0B1F1A;
  --ink-700:#1D3A32;
  --brand-600:#0E7A5F;
  --brand-500:#12A07B;
  --brand-100:#E4F3EE;
  --accent-500:#FF6A2B;
  --accent-100:#FFEDE3;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --line:#E3E0D8;
  --muted:#6B7A74;
  --ok:#1E9E6A;
  --warn:#C9821B;
  --err:#C0392B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --e1:0 1px 2px rgba(11,31,26,.06);
  --e2:0 8px 24px rgba(11,31,26,.08);
  --e3:0 18px 48px rgba(11,31,26,.14);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--ink-700);background:var(--paper)}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
input{font:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink-900);color:#DCE9E4;font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(30,158,106,.22);flex:none}
.topbar-domain{font-weight:600;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.02em;white-space:nowrap}
.topbar-tip{color:#9FB6AE;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:12px;flex:none}
.topbar-right a{color:#DCE9E4;transition:color .2s ease-out}
.topbar-right a:hover{color:#8FE3C6}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.24)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff}
.nav-bar{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .24s ease-out}
.site-header.is-scrolled .nav-bar{box-shadow:var(--e2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand-600);display:grid;place-items:center;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-weight:800;font-size:17px;letter-spacing:.06em;color:var(--ink-900)}
.logo-sub{font-size:11px;letter-spacing:.16em;font-weight:600;color:var(--brand-600)}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;display:block;padding:9px 13px;font-size:15px;border-radius:8px;color:var(--ink-700);transition:color .2s ease-out,background .2s ease-out}
.main-nav a:hover{color:var(--brand-600);background:var(--brand-100)}
.main-nav a.is-active{color:var(--brand-600);font-weight:600}
.main-nav a.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--brand-600)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:10px;color:var(--ink-700);transition:background .2s ease-out,color .2s ease-out}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-600)}
.hamburger{display:none;width:44px;height:44px;place-items:center;border-radius:10px;border:1px solid var(--line);color:var(--ink-700)}
.hamburger:hover{border-color:var(--brand-600);color:var(--brand-600)}

/* 移动抽屉 */
.mobile-drawer{display:none}
.drawer-head{padding:14px 20px 6px;font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--muted)}
.drawer-link{display:block;padding:13px 20px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);transition:background .2s,color .2s}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-600)}
.drawer-cta{padding:18px 20px 24px}
.drawer-cta .btn{width:100%}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;cursor:pointer;transition:transform .18s ease-out,box-shadow .18s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out,filter .18s ease-out}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 4px 0 var(--ink-900)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 6px 0 var(--ink-900)}
.btn-primary:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink-900)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink-700)}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost{background:none;color:var(--brand-600);padding:0 2px;height:auto}
.btn-ghost .arrow{transition:transform .2s ease-out}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--brand-100);color:var(--brand-600)}
.badge-accent{background:var(--accent-100);color:#C64A12}

/* ============ 面包屑 & 文章头 ============ */
.article-hero{padding:30px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb a{transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C6C2B7}
.breadcrumb .current{color:var(--ink-700);max-width:30ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:clamp(30px,4.4vw,44px);line-height:1.2;font-weight:900;letter-spacing:-.01em;color:var(--ink-900);max-width:920px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;font-size:14px;color:var(--muted)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CFCBBF;flex:none}
.cover-wrap{margin-top:28px;border-radius:16px;overflow:hidden;background:var(--brand-100);box-shadow:var(--e2);aspect-ratio:16/9}
.cover-wrap img{width:100%;height:100%;object-fit:cover}

/* ============ 正文布局 ============ */
.article-main{padding:44px 0 88px}
.article-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:104px}
.toc-title{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--muted);margin-bottom:12px}
.toc-title::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--brand-600)}
.toc-nav ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.toc-nav a{display:block;padding:7px 0 7px 14px;margin-left:-1px;font-size:14px;line-height:1.5;color:var(--muted);border-left:2px solid transparent;transition:color .2s ease-out,border-color .2s ease-out}
.toc-nav a:hover{color:var(--brand-600)}
.toc-nav li.lvl-3 a{padding-left:26px;font-size:13px}
.toc-nav a.is-current{color:var(--brand-600);font-weight:600;border-left-color:var(--brand-600)}
.toc-toggle{display:none}

.article-body{max-width:760px;font-size:17px;line-height:1.75;color:var(--ink-700);word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{position:relative;font-size:clamp(24px,2.4vw,28px);line-height:1.3;font-weight:800;color:var(--ink-900);padding-left:16px;margin:46px 0 18px}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--brand-600)}
.article-body h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink-900);margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin:24px 0 10px}
.article-body p{margin:0 0 1.2em}
.article-body strong{color:var(--ink-900);font-weight:700}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--brand-500)}
.article-body blockquote{margin:24px 0;padding:16px 22px;border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;background:var(--brand-100);color:var(--ink-700)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:0;top:.66em;width:7px;height:7px;border-radius:2px;background:var(--brand-500)}
.article-body ol{margin:0 0 1.2em;counter-reset:abc}
.article-body ol li{position:relative;padding-left:36px;margin-bottom:10px;counter-increment:abc}
.article-body ol li::before{content:counter(abc);position:absolute;left:0;top:.28em;width:22px;height:22px;display:grid;place-items:center;border-radius:6px;background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:700}
.article-body img{border-radius:12px;margin:24px 0 10px;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{padding:2px 6px;border-radius:6px;background:#EFEDE6;font-size:.92em}
.article-body pre{padding:16px 18px;border-radius:12px;background:var(--ink-900);color:#DCE9E4;overflow-x:auto;font-size:14px;line-height:1.6}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--brand-100);color:var(--ink-900);font-weight:700}

/* ============ 文章尾区 ============ */
.article-foot{max-width:760px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-700);transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out}
.tag:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-100)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px}
.back-row{margin-top:28px}

/* ============ 相关推荐 ============ */
.related{margin-top:72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-title{font-size:24px;line-height:1.3;font-weight:800;color:var(--ink-900)}
.section-sub{font-size:14px;color:var(--muted);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--e1);transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out}
.card:hover{border-color:#BFE3D6;box-shadow:var(--e2);transform:translateY(-2px)}
.card-media{aspect-ratio:4/3;overflow:hidden;background:var(--brand-100)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{display:flex;flex-direction:column;gap:10px;padding:18px 18px 20px;flex:1}
.card-title{font-size:17px;line-height:1.45;font-weight:700;color:var(--ink-900)}
.card-text{font-size:14px;line-height:1.7;color:var(--muted)}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:8px;padding-top:10px;font-size:12px;color:var(--muted)}

/* ============ 空态 ============ */
.empty-state{max-width:760px;padding:56px 32px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg)}
.empty-state svg{width:48px;height:48px;margin:0 auto 16px;stroke:var(--brand-600);opacity:.4}
.empty-state h2{font-size:20px;font-weight:800;color:var(--ink-900);margin-bottom:8px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#A9BFB8}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-top:64px;padding-bottom:48px}
.footer-brand .logo-name{color:#fff}
.footer-brand .logo-sub{color:#6FD3B2}
.footer-brand .logo-mark{background:var(--brand-600)}
.footer-brand p{margin-top:16px;max-width:340px;font-size:14px;line-height:1.8;color:#93ACA4}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{display:inline-block;font-size:14px;color:#A9BFB8;transition:color .2s ease-out,transform .2s ease-out}
.footer-col a:hover{color:#8FE3C6;transform:translateX(2px)}
.footer-contact p{font-size:14px;line-height:1.8;color:#93ACA4;margin-bottom:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:20px;padding-bottom:20px;font-size:13px;color:#7E968E}

/* ============ 返回顶部 ============ */
.back-top{position:fixed;right:24px;bottom:24px;z-index:70;width:46px;height:46px;border-radius:50%;background:var(--brand-600);color:#fff;display:grid;place-items:center;box-shadow:var(--e2);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .24s ease-out,transform .24s ease-out,background .2s ease-out}
.back-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--brand-500)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;max-width:760px;margin:0 auto}
  .toc{position:static;margin-bottom:26px}
  .toc-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;height:48px;padding:0 16px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-900)}
  .toc-toggle svg{transition:transform .24s ease-out}
  .toc.is-open .toc-toggle svg{transform:rotate(180deg)}
  .toc-nav{display:none;padding:12px 16px 16px;background:#fff;border:1px solid var(--line);border-top:0;border-radius:0 0 12px 12px}
  .toc.is-open .toc-nav{display:block}
  .toc-title{display:none}
  .toc-nav ul{border-left:0}
  .toc-nav li.lvl-3 a{padding-left:28px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .hamburger{display:grid}
  .mobile-drawer{display:block;max-height:0;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);transition:max-height .28s ease-out}
  .mobile-drawer.is-open{max-height:560px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-top:52px;padding-bottom:40px}
  .footer-brand{grid-column:1 / -1}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .topbar-tip{display:none}
  .nav-inner{min-height:62px;gap:12px}
  .nav-actions .btn-sm{display:none}
  .article-hero{padding-top:22px}
  .article-main{padding:32px 0 64px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cover-wrap{border-radius:14px}
  .article-foot{margin-top:44px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .topbar-inner{min-height:44px}
  .topbar-domain{max-width:120px;overflow:hidden;text-overflow:ellipsis}
  .footer-grid{grid-template-columns:minmax(0,1fr);padding-top:44px}
  .footer-brand{grid-column:auto}
  .footer-bottom .container{flex-direction:column}
  .back-top{right:16px;bottom:16px}
  .empty-state{padding:40px 20px}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B1F1A;
  --ink-700:#1D3A32;
  --brand-600:#0E7A5F;
  --brand-500:#12A07B;
  --brand-100:#E4F3EE;
  --accent-500:#FF6A2B;
  --accent-100:#FFEDE3;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --line:#E3E0D8;
  --muted:#6B7A74;
  --ok:#1E9E6A;
  --warn:#C9821B;
  --err:#C0392B;
  --r-input:10px;
  --r-card:14px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(11,31,26,.06);
  --sh-2:0 8px 24px rgba(11,31,26,.08);
  --sh-3:0 18px 48px rgba(11,31,26,.14);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.72;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 32px}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink-900);color:rgba(255,255,255,.76);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-dot{width:7px;height:7px;border-radius:50%;background:var(--brand-500);box-shadow:0 0 0 3px rgba(18,160,123,.2);flex:none}
.topbar-domain{font-family:var(--font-num);letter-spacing:.02em;color:#fff;font-weight:600}
.topbar-note{color:rgba(255,255,255,.5)}
.topbar-right{display:flex;align-items:center;gap:14px;flex:none}
.topbar-right a{color:rgba(255,255,255,.82);transition:color .18s ease}
.topbar-right a:hover{color:#fff}
.topbar-sep{width:2px;height:12px;background:rgba(255,255,255,.24);display:inline-block}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;gap:32px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-mark svg{width:22px;height:22px;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-name{font-family:var(--font-num);font-weight:800;font-size:16px;letter-spacing:.06em}
.logo-sub{font-size:12px;color:var(--muted);letter-spacing:.08em}
.main-nav{margin-left:8px}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;display:inline-block;padding:22px 2px;
  font-size:15px;font-weight:600;color:var(--ink-700);transition:color .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.main-nav a:hover{color:var(--brand-600)}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand-600)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-700);
  transition:border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600);box-shadow:var(--sh-1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--ink-700);
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-input);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.2;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,border-color .18s ease,color .18s ease,background .18s ease;
  min-height:44px;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 4px 0 var(--ink-900)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 6px 0 var(--ink-900)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 0 var(--ink-900)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-700)}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);box-shadow:var(--sh-1)}
.btn-ghost{padding:8px 0;color:var(--brand-600);font-weight:700;min-height:auto}
.btn-ghost i{transition:transform .18s ease}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-sm{padding:8px 16px;font-size:14px;min-height:38px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed}
.btn.is-loading{opacity:.85;pointer-events:none}
.btn.is-loading::after{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  background:var(--brand-100);color:var(--brand-600);
}
.badge-live{background:#E3F6ED;color:var(--ok)}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.badge-soon{background:var(--accent-100);color:#C24A12}
.badge-done{background:#EFEEE8;color:var(--muted)}
.badge-ghost{background:rgba(255,255,255,.14);color:#fff}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;
  color:var(--brand-600);text-transform:uppercase;margin-bottom:12px;
}
.section-title{font-size:30px}
.section-desc{margin-top:14px;color:var(--muted);font-size:17px}

/* ============ Banner ============ */
.banner{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  background-image:url("/assets/images/coverpic/cover-4.png");
  background-size:cover;background-position:center;
  color:#fff;
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(11,31,26,.92) 0%,rgba(11,31,26,.75) 58%,rgba(14,122,95,.72) 100%);
}
.banner-inner{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;max-width:820px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:18px}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px}
.banner h1{font-size:44px;font-weight:900;line-height:1.15;letter-spacing:-.01em}
.banner-sub{margin-top:16px;font-size:19px;color:rgba(255,255,255,.84);max-width:640px}
.banner-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}

/* ============ 卖点带 ============ */
.point-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.point{
  grid-column:span 12;
  display:flex;gap:24px;align-items:flex-start;
  padding:28px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.point:hover{border-color:#C7E4DA;box-shadow:var(--sh-2);transform:translateY(-2px)}
.point:nth-child(2){grid-column:span 7}
.point:nth-child(3){grid-column:span 5}
.point-num{
  font-family:var(--font-num);font-size:52px;font-weight:900;line-height:1;
  color:rgba(14,122,95,.14);-webkit-text-stroke:1.5px var(--brand-600);
  flex:none;letter-spacing:-.02em;
}
.point-body h3{font-size:20px;margin-bottom:8px}
.point-body p{color:var(--muted);font-size:16px}

/* ============ 数据带 ============ */
.stats{
  background:var(--ink-900);color:#fff;border-radius:var(--r-panel);
  padding:40px 32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;overflow:hidden;
}
.stats::after{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:14px 14px;opacity:.1;pointer-events:none;
}
.stat-num{font-family:var(--font-num);font-size:34px;font-weight:800;letter-spacing:-.01em}
.stat-num small{font-size:15px;font-weight:600;color:rgba(255,255,255,.6);margin-left:2px}
.stat-label{margin-top:6px;font-size:14px;color:rgba(255,255,255,.66)}

/* ============ 时间轴 ============ */
.timeline{position:relative}
.timeline-item{
  position:relative;display:grid;grid-template-columns:132px 1fr;gap:32px;
  padding-bottom:28px;
}
.timeline-item::before{
  content:"";position:absolute;left:126px;top:16px;width:12px;height:12px;border-radius:50%;
  background:var(--brand-600);box-shadow:0 0 0 4px var(--brand-100);z-index:1;
}
.timeline-item:not(:last-child)::after{
  content:"";position:absolute;left:131px;top:32px;bottom:0;width:2px;background:var(--line);
}
.timeline-time{padding-top:12px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.timeline-time .t{font-size:24px;font-weight:800;letter-spacing:-.01em;display:block}
.timeline-time .n{font-size:13px;color:var(--muted)}
.timeline-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.timeline-card:hover{border-color:#C7E4DA;box-shadow:var(--sh-2)}
.timeline-card h3{font-size:20px;margin:12px 0 10px}
.timeline-card p{color:var(--muted);font-size:16px}
.timeline-meta{
  display:flex;flex-wrap:wrap;gap:18px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.timeline-meta i{color:var(--brand-600);margin-right:6px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  color:var(--brand-600);font-weight:700;font-size:15px;
}
.link-arrow i{transition:transform .18s ease}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 场景卡 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:#C7E4DA;box-shadow:var(--sh-2);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;margin:12px 0 10px}
.card-body p{color:var(--muted);font-size:16px;flex:1}
.card-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-600);
  font-size:12px;transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand-100);border-color:transparent}
.faq-answer{padding:0 0 22px;color:var(--muted);font-size:15px;line-height:1.75;max-width:640px}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  border-radius:var(--r-panel);padding:56px 48px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:10px;
  background:var(--brand-600);transform:skewX(-8deg) scaleY(1.4);
}
.cta-panel::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:260px;height:260px;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:16px 16px;opacity:.1;pointer-events:none;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:30px;margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.74);font-size:16px;max-width:460px}
.cta-points{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.cta-points span{
  font-size:13px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.86);
}
.cta-form{position:relative;z-index:1;display:grid;gap:12px}
.cta-form input{
  height:48px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.45)}
.cta-form input:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(18,160,123,.18);background:rgba(255,255,255,.1);
}
.cta-form input.is-error{border-color:#F0817A;box-shadow:0 0 0 4px rgba(192,57,43,.2)}
.form-note{font-size:13px;color:rgba(255,255,255,.55);line-height:1.6}
.form-note.is-error{color:#F5A69F}
.form-note.is-ok{color:#8FE3C4}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);margin-top:88px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 32px 48px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-sub{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.62);max-width:340px}
.footer-title{font-size:14px;font-weight:800;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{
  font-size:15px;color:rgba(255,255,255,.66);
  display:inline-flex;align-items:center;transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:#8FE3C4;transform:translateX(2px)}
.footer-contact p{font-size:15px;color:rgba(255,255,255,.62);margin-bottom:18px;line-height:1.75}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12)}
.footer-bottom .container{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 32px;font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;
}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:90;
  background:var(--surface);padding:22px;display:flex;flex-direction:column;gap:22px;
  transform:translateX(102%);transition:transform .24s ease;box-shadow:var(--sh-3);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-700);
}
.drawer-nav ul{display:grid;gap:6px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-input);
  font-weight:600;color:var(--ink-700);transition:background .18s ease,color .18s ease;
}
.drawer-nav a:hover{background:var(--brand-100);color:var(--brand-600)}
.drawer-nav a.is-active{background:var(--brand-100);color:var(--brand-600)}
.drawer-meta{font-size:13px;color:var(--muted);font-family:var(--font-num)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,26,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--ink-900);color:#fff;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background .18s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-600)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .main-nav ul{gap:20px}
  .main-nav a{font-size:14px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .section{padding:64px 0}
  .banner h1{font-size:36px}
  .banner-sub{font-size:17px}
  .point:nth-child(2),.point:nth-child(3){grid-column:span 12}
  .stats{grid-template-columns:repeat(2,1fr);padding:32px 24px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:44px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 24px 36px}
  .footer-bottom .container{padding:20px 24px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:44px 0}
  .topbar-inner{min-height:56px;flex-wrap:wrap;padding:10px 0;row-gap:6px}
  .topbar-note{display:none}
  .topbar-left{gap:8px}
  .header-inner{min-height:62px;gap:14px}
  .banner{min-height:260px}
  .banner-inner{padding-top:40px;padding-bottom:40px}
  .banner h1{font-size:30px}
  .banner-sub{font-size:16px;margin-top:12px}
  .section-title{font-size:24px}
  .point{padding:22px}
  .point-num{font-size:40px}
  .stats{grid-template-columns:1fr;gap:18px;border-radius:16px}
  .timeline-item{grid-template-columns:1fr;gap:10px;padding-left:22px;padding-bottom:22px}
  .timeline-item::before{left:0;top:6px;width:10px;height:10px;box-shadow:0 0 0 3px var(--brand-100)}
  .timeline-item:not(:last-child)::after{left:4px;top:20px}
  .timeline-time{padding-top:0;display:flex;align-items:baseline;gap:8px}
  .timeline-time .t{font-size:20px}
  .timeline-card{padding:20px}
  .card-grid{grid-template-columns:1fr}
  .cta-panel{padding:34px 22px;border-radius:16px}
  .cta-copy h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B1F1A;
  --ink-700:#1D3A32;
  --brand-600:#0E7A5F;
  --brand-500:#12A07B;
  --brand-100:#E4F3EE;
  --accent-500:#FF6A2B;
  --accent-100:#FFEDE3;
  --paper:#F7F5EF;
  --surface:#FFFFFF;
  --line:#E3E0D8;
  --muted:#6B7A74;
  --ok:#1E9E6A;
  --warn:#C9821B;
  --err:#C0392B;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --e1:0 1px 2px rgba(11,31,26,.06);
  --e2:0 8px 24px rgba(11,31,26,.08);
  --e3:0 18px 48px rgba(11,31,26,.14);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.72;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;color:var(--ink-900);font-weight:800}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.2em;padding:0}
li{list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-900);color:#C9DED6;font-size:14px;min-height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:4px;padding-bottom:4px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-left svg{flex:0 0 auto;opacity:.8}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em}
.topbar-tip{color:#8FB3A7}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.topbar-right a{color:#D6E8E2;font-weight:600}
.topbar-right a:hover{color:#fff}
.topbar-sep{width:2px;height:12px;background:#3A5A50;display:inline-block}
.topbar-cta{color:var(--accent-500)!important}
.topbar-cta:hover{color:#FF8A57!important}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out,background .2s ease-out;
}
.site-header.is-stuck{box-shadow:var(--e2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900)}
.logo:hover{color:var(--ink-900)}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--brand-500),var(--brand-600));
  display:grid;place-items:center;box-shadow:var(--e1);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-name{font-weight:900;font-size:18px;letter-spacing:.06em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.22em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  display:inline-flex;align-items:center;height:68px;padding:0 14px;
  color:var(--ink-700);font-size:15px;font-weight:600;position:relative;
  border-bottom:2px solid transparent;
}
.nav-links a:hover{color:var(--brand-600)}
.nav-links a.active{color:var(--brand-600);border-bottom-color:var(--brand-600)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--ink-700);
  transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
}
.icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600)}
.menu-toggle{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);font-size:16px;font-weight:700;
  border:1px solid transparent;cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 4px 0 var(--ink-900)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 5px 0 var(--ink-900),var(--e2);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 0 var(--ink-900)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-700)}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-600);height:auto;padding:4px 2px;font-weight:700}
.btn-ghost .arrow{display:inline-block;transition:transform .18s ease-out}
.btn-ghost:hover .arrow{transform:translateX(3px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 32px;font-size:17px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;
  background:var(--brand-100);color:var(--brand-600);
}
.badge-accent{background:var(--accent-100);color:#C24A11}
.badge-ok{background:#E6F6EE;color:var(--ok)}
.badge-muted{background:#ECEAE3;color:var(--muted)}

/* ---------- 页头 banner ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--ink-900);
  background-image:linear-gradient(115deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.82) 48%,rgba(14,122,95,.72) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.12;
  background-image:radial-gradient(#ffffff 1px,transparent 1px);background-size:18px 18px;
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:#A9C6BC;margin-bottom:18px}
.breadcrumb a{color:#D3E7E0}
.breadcrumb a:hover{color:#fff}
.breadcrumb span.sep{opacity:.6}
.page-hero h1{
  color:#fff;font-size:44px;font-weight:900;line-height:1.15;max-width:820px;
}
.page-hero .hero-sub{margin-top:16px;font-size:19px;color:#C7DDD5;max-width:680px}
.hero-labels{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-labels a{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#EAF5F1;
  font-size:14px;font-weight:600;transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.hero-labels a:hover{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.4)}

/* ---------- 主体区块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:30px}
.section-head p{margin:10px 0 0;color:var(--muted);font-size:16px;max-width:640px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;
  color:var(--brand-600);margin-bottom:12px;text-transform:uppercase;
}

/* ---------- 文档双栏 ---------- */
.docs-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:48px;align-items:start}
.docs-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--e1);padding:18px 14px;
}
.toc-title{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--muted);padding:0 10px 12px;margin:0}
.toc ul{display:flex;flex-direction:column;gap:2px;margin:0}
.toc-link{
  display:block;padding:10px 12px;border-radius:8px;font-size:15px;font-weight:600;
  color:var(--ink-700);border-left:3px solid transparent;transition:all .18s ease-out;
}
.toc-link:hover{background:var(--brand-100);color:var(--brand-600);transform:translateX(2px)}
.toc-link.is-current{background:var(--brand-100);color:var(--brand-600);border-left-color:var(--brand-600)}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--e1);overflow:hidden;
}
.side-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.side-card-body{padding:18px}
.side-card-body h3{font-size:17px;margin-bottom:8px}
.side-card-body p{font-size:14px;color:var(--muted);margin-bottom:14px}
.side-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(30,158,106,.14)}

/* ---------- 正文 ---------- */
.docs-body{max-width:760px}
.doc-section{padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--line)}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-section h2{
  font-size:27px;padding-left:14px;border-left:4px solid var(--brand-600);
  margin-bottom:18px;line-height:1.3;
}
.doc-section h3{font-size:20px;margin:28px 0 12px}
.doc-section p{font-size:17px;line-height:1.75}
.doc-section p a{font-weight:600}

/* 步骤 */
.steps{counter-reset:step;display:flex;flex-direction:column;gap:14px;margin:22px 0 26px}
.step{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--e1);transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.step:hover{border-color:var(--brand-100);box-shadow:var(--e2)}
.step-num{
  counter-increment:step;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-600);font-weight:900;font-size:18px;
  font-variant-numeric:tabular-nums;
}
.step-num::before{content:counter(step,decimal-leading-zero)}
.step h4{font-size:17px;margin-bottom:6px}
.step p{margin:0;font-size:15px;color:var(--muted);line-height:1.7}

/* 列表 */
.square-list{display:flex;flex-direction:column;gap:12px;margin:20px 0 26px}
.square-list li{
  position:relative;padding-left:22px;font-size:16px;line-height:1.72;
}
.square-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:2px;background:var(--brand-500);
}
.dash-list{display:flex;flex-direction:column;gap:10px;margin:18px 0 24px}
.dash-list li{position:relative;padding-left:20px;font-size:16px;color:var(--ink-700)}
.dash-list li::before{
  content:"";position:absolute;left:0;top:14px;width:12px;height:2px;background:var(--accent-500);
}
.plain-list{display:flex;flex-direction:column;gap:12px;margin:18px 0 24px;counter-reset:plain}
.plain-list li{position:relative;padding-left:26px;font-size:16px}
.plain-list li::before{
  counter-increment:plain;content:counter(plain)".";
  position:absolute;left:0;top:0;color:var(--brand-600);font-weight:800;
}

/* 提示块 */
.callout{
  border-left:3px solid var(--brand-600);background:var(--brand-100);
  border-radius:0 var(--r-md) var(--r-md) 0;padding:18px 22px;margin:24px 0;
}
.callout-warn{border-left-color:var(--warn);background:#FBF3E3}
.callout p{margin:0;font-size:15.5px;color:var(--ink-700)}
.callout strong{color:var(--ink-900)}

/* 信息表 */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:22px 0 26px}
.info-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--e1);
}
.info-item dt{font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--brand-600);margin-bottom:6px}
.info-item dd{margin:0;font-size:15px;color:var(--ink-700);line-height:1.7}

/* ---------- 入口卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--e1);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.card:hover{box-shadow:var(--e2);border-color:var(--brand-100);transform:translateY(-2px)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px;margin-bottom:10px;line-height:1.4}
.card-body p{font-size:15px;color:var(--muted);margin-bottom:18px;flex:1}
.card-link{font-size:15px;font-weight:700;display:inline-flex;align-items:center;gap:6px}
.card-link .arrow{transition:transform .18s ease-out}
.card:hover .card-link .arrow{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--e1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--ink-900);min-height:44px;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{padding:0 26px 24px;font-size:15.5px;color:var(--muted);line-height:1.75}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  border-radius:var(--r-lg);padding:52px 56px;box-shadow:var(--e3);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;
  background-image:radial-gradient(#ffffff 1px,transparent 1px);background-size:16px 16px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-band p{color:#B9D2C9;font-size:16px;margin:0}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-note{font-size:13px;color:#8FB3A7;margin:0}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#D3E7E0;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  padding:8px 14px;border-radius:var(--r-pill);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#B9D2C9;margin-top:88px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px;color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.8;color:#9DBBB1;max-width:360px}
.footer-title{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px;margin:0}
.footer-col a{color:#B9D2C9;font-size:14.5px;display:inline-block;transition:color .18s ease-out,transform .18s ease-out}
.footer-col a:hover{color:#7BE0BE;transform:translateX(2px)}
.footer-contact p{font-size:14.5px;color:#9DBBB1;margin-bottom:18px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:#8FB3A7}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand-600);color:#fff;border:0;display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--e2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease-out,transform .22s ease-out,visibility .22s ease-out,background .2s ease-out;
  z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-500)}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--surface);
  transform:translateX(100%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.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:var(--r-sm);border:1px solid var(--line);background:var(--surface);cursor:pointer;display:grid;place-items:center}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-links a{
  padding:14px 12px;border-radius:var(--r-sm);font-size:17px;font-weight:700;color:var(--ink-700);
}
.drawer-links a.active{background:var(--brand-100);color:var(--brand-600)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .docs-layout{grid-template-columns:240px minmax(0,1fr);gap:32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .menu-toggle{display:grid}
  .section{padding:64px 0}
  .page-hero h1{font-size:36px}
  .page-hero .container{padding-top:44px;padding-bottom:44px}
  .docs-layout{grid-template-columns:1fr;gap:28px}
  .docs-aside{position:static;top:auto}
  .toc ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-link{padding:8px 12px;border-left:0;border:1px solid var(--line);font-size:14px;border-radius:var(--r-pill)}
  .toc-link.is-current{border-color:var(--brand-600)}
  .toc-link:hover{transform:none}
  .side-card{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:40px 32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:44px 0}
  .section-tight{padding:40px 0}
  .page-hero h1{font-size:30px}
  .page-hero .hero-sub{font-size:16.5px}
  .section-head h2{font-size:24px}
  .docs-body{max-width:100%}
  .doc-section h2{font-size:23px}
  .info-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;border-radius:var(--r-md)}
  .cta-band h2{font-size:24px}
  .cta-actions{align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a-inner{padding:0 20px 20px}
  .topbar-tip{display:none}
  .site-footer{margin-top:56px;padding-top:48px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .step{grid-template-columns:1fr;gap:10px}
  .step-num{width:38px;height:38px;font-size:16px}
  .page-hero h1{font-size:27px}
  .hero-labels a{font-size:13px;padding:8px 13px}
  .toc ul{flex-direction:column}
}