/* roulang page: index */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --line-light:rgba(255,255,255,.10);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-btn:14px;
  --sh-1:0 8px 24px rgba(20,22,26,.08);
  --sh-2:0 16px 40px rgba(20,22,26,.14);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--text-900);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.container-wide{max-width:1320px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:84px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin:14px 0 0;color:var(--text-600);max-width:760px;font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--ink-900);background:var(--surface-2);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-a)}
.eyebrow.on-dark{color:var(--brand-lime);background:rgba(184,240,60,.12)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 6px 26px rgba(20,22,26,.18);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{background:rgba(20,22,26,.94);box-shadow:0 10px 30px rgba(20,22,26,.28)}
.nav-inner{display:flex;align-items:center;gap:26px;height:76px;transition:height .2s ease}
.site-header.is-stuck .nav-inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:13px;background:var(--grad-a);
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(47,211,160,.28);
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:#fff;font-size:18px;font-weight:800;letter-spacing:.01em}
.brand-text em{font-style:normal;color:rgba(255,255,255,.72);font-size:12px;letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 15px;border-radius:var(--r-sm);
  color:rgba(255,255,255,.80);font-size:15px;font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav-link.is-active{color:var(--ink-900);background:var(--brand-lime);font-weight:700}
.nav-link.is-active:hover{color:var(--ink-900);background:var(--brand-lime)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad-b);color:#fff;box-shadow:0 10px 24px rgba(255,106,61,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,106,61,.34)}
.btn-lime{background:var(--brand-lime);color:var(--ink-900);box-shadow:0 10px 24px rgba(184,240,60,.26)}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-ghost{color:#fff;border:1px solid rgba(255,255,255,.34);background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-outline{color:var(--ink-900);border:1px solid var(--line);background:var(--surface)}
.btn-outline:hover{border-color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);
  place-items:center;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  position:fixed;inset:0;z-index:200;display:none;
}
.mobile-drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,22,26,.55)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(310px,84vw);
  background:var(--ink-900);padding:26px 22px;overflow-y:auto;
  box-shadow:-20px 0 50px rgba(0,0,0,.35);
}
.drawer-panel .brand{margin-bottom:22px}
.drawer-close{
  position:absolute;top:16px;right:18px;width:42px;height:42px;border-radius:12px;
  color:#fff;font-size:20px;line-height:1;border:1px solid rgba(255,255,255,.2);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-sm);
  color:rgba(255,255,255,.82);font-size:16px;
}
.drawer-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer-nav a.is-active{background:var(--brand-lime);color:var(--ink-900);font-weight:700}
.drawer-foot{margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.55);font-size:13px}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--ink-900);color:#fff;
  padding:150px 0 78px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;opacity:.85;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-180px;top:-120px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(47,211,160,.20),transparent 66%);
  pointer-events:none;
}
.hero .container-wide{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.01em;
  margin:0 0 20px;
}
.hero h1 .hl{
  background:var(--grad-a);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.badge-row{display:flex;gap:12px;flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  border-radius:999px;padding:9px 16px;flex:0 0 auto;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
}
.badge b{font-family:var(--font-num);font-size:19px;color:var(--brand-lime);letter-spacing:.02em;font-weight:700}
.badge span{font-size:13px;color:rgba(255,255,255,.70);letter-spacing:.02em}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:0 26px 60px rgba(0,0,0,.45)}
.hero-visual img{width:100%;aspect-ratio:4/3.05;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.30) 0%,rgba(20,22,26,.62) 100%);
}
.hero-visual .caption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
}
.hero-visual .caption strong{display:block;font-size:17px;font-weight:700;color:#fff;margin-bottom:4px}
.hero-visual .caption span{font-size:13px;color:rgba(255,255,255,.72)}
.anchor-bar{
  margin-top:54px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;
}
.anchor-chip{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;
  border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);
  color:rgba(255,255,255,.86);font-size:14px;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.anchor-chip:hover{background:var(--brand-lime);color:var(--ink-900);transform:translateY(-2px)}
.anchor-chip i{font-style:normal;font-family:var(--font-num);color:var(--brand-lime);font-size:13px}
.anchor-chip:hover i{color:var(--ink-900)}

/* ---------- directory ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dir-card{
  position:relative;display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px 26px 24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.dir-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,22,26,.18)}
.dir-num{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  background:var(--grad-a);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;margin-bottom:16px;letter-spacing:.02em;
}
.dir-card h3{font-size:clamp(18px,2vw,22px);font-weight:600;margin-bottom:10px}
.dir-card p{color:var(--text-600);font-size:15px;line-height:1.75;margin:0 0 20px}
.dir-foot{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--line)}
.dir-foot .count{
  font-size:12px;letter-spacing:.08em;color:var(--ink-900);background:var(--surface-2);
  border-radius:999px;padding:5px 12px;
}
.dir-arrow{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;transition:background .18s ease,border-color .18s ease;
}
.dir-arrow svg{width:14px;height:14px}
.dir-card:hover .dir-arrow{background:var(--brand-lime);border-color:var(--brand-lime)}
.dir-card.wide{grid-column:span 2}

/* ---------- featured ---------- */
.feature-lead{
  display:grid;grid-template-columns:1.25fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);margin-bottom:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.feature-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-lead .thumb{position:relative;background:var(--surface-2);overflow:hidden}
.feature-lead .thumb img{width:100%;height:100%;min-height:320px;object-fit:cover;transition:transform .35s ease}
.feature-lead:hover .thumb img{transform:scale(1.04)}
.feature-lead .body{padding:36px 34px;display:flex;flex-direction:column}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  background:var(--surface-2);color:var(--ink-900);
}
.tag.lime{background:rgba(184,240,60,.30);color:#33520a}
.tag.mint{background:rgba(47,211,160,.20);color:#0d5c45}
.feature-lead h3{font-size:clamp(20px,2.4vw,26px);margin:16px 0 14px;line-height:1.35}
.feature-lead p{color:var(--text-600);font-size:16px;margin-bottom:22px}
.meta-line{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-300);letter-spacing:.02em;
}
.meta-line .dot{width:4px;height:4px;border-radius:50%;background:var(--text-300)}
.pill-num{
  font-family:var(--font-num);font-size:13px;color:var(--ink-900);
  background:var(--surface-2);border-radius:999px;padding:4px 12px;letter-spacing:.02em;
}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,22,26,.16)}
.card .thumb{background:var(--surface-2);overflow:hidden}
.card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:17px;font-weight:600;margin:12px 0 10px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{color:var(--text-600);font-size:14.5px;line-height:1.72;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .meta-line{margin-top:auto;padding-top:14px;font-size:13px}

/* ---------- recommend ---------- */
.reco-strip{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory}
.reco-strip::-webkit-scrollbar{height:6px}
.reco-strip::-webkit-scrollbar-thumb{background:rgba(20,22,26,.18);border-radius:999px}
.reco-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.reco-card h3{font-size:17px;margin:14px 0 8px;line-height:1.5}
.reco-card p{font-size:14.5px;color:var(--text-600);margin:0}
.reco-num{font-family:var(--font-num);font-size:13px;color:var(--text-300);letter-spacing:.08em}

/* ---------- cta band ---------- */
.cta-band{
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  background:var(--ink-900);border-radius:var(--r-lg);padding:44px 42px;color:#fff;
  border:1px solid rgba(255,255,255,.08);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(184,240,60,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:14px;position:relative}
.cta-band p{color:rgba(255,255,255,.72);margin:0;position:relative;font-size:16px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;position:relative}

/* ---------- latest ---------- */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--ink-900);position:relative;padding-bottom:3px;min-height:44px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:8px;width:0;height:2px;background:var(--grad-a);
  transition:width .22s ease;
}
.text-link:hover::after{width:100%}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.empty-state{
  grid-column:1/-1;min-height:220px;background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--r-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:36px;text-align:center;
}
.empty-state svg{width:40px;height:40px;stroke:var(--ink-900);fill:none;stroke-width:1.6}
.empty-state p{margin:0;color:var(--text-600);font-size:15px}

/* ---------- faq ---------- */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--surface-2);
  transition:background .2s ease;
}
.faq-item[open]::before{background:var(--grad-a)}
.faq-item[open]{box-shadow:var(--sh-2);border-color:rgba(20,22,26,.16)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 54px 20px 26px;position:relative;
  font-size:17px;font-weight:600;line-height:1.55;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--text-600);border-bottom:2px solid var(--text-600);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--ink-900)}
.faq-body{padding:0 26px 22px;color:var(--text-600);font-size:15.5px;line-height:1.8}
.faq-body p{margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 26px;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-a);opacity:.5;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand p{margin:18px 0 0;font-size:14.5px;color:rgba(255,255,255,.58);line-height:1.8}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .18s ease}
.footer-col a:hover{color:var(--brand-lime)}
.footer-col p{font-size:14.5px;color:rgba(255,255,255,.58);margin:0 0 12px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.42);letter-spacing:.02em;
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:18px;bottom:18px;z-index:110;display:none;
}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:grid}
  .hero{padding:126px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .dir-grid{grid-template-columns:repeat(2,1fr)}
  .dir-card.wide{grid-column:span 2}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .feature-lead{grid-template-columns:1fr}
  .feature-lead .thumb img{min-height:250px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px 30px}
  .cta-actions{justify-content:flex-start}
  .float-cta{display:block}
}
@media screen and (max-width:768px){
  .section{padding:64px 0}
  .section-tight{padding:44px 0}
  .faq-list{grid-template-columns:1fr}
}
@media screen and (max-width:560px){
  body{font-size:16px}
  .container,.container-wide{padding:0 16px}
  .nav-inner{height:64px}
  .brand-mark{width:36px;height:36px;border-radius:11px}
  .brand-text strong{font-size:16px}
  .brand-text em{font-size:11px;letter-spacing:.10em}
  .hero{padding:112px 0 52px}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1 1 auto}
  .dir-grid{grid-template-columns:1fr}
  .dir-card.wide{grid-column:span 1}
  .card-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section-head h2{margin-bottom:4px}
  .feature-lead .body{padding:24px 20px}
  .badge-row{padding-bottom:8px}
}

/* roulang page: article */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --line-strong:rgba(20,22,26,.18);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-btn:14px;
  --sh-1:0 8px 24px rgba(20,22,26,.08);
  --sh-2:0 16px 40px rgba(20,22,26,.14);
  --container:1200px;
  --container-wide:1320px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-900);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:0;list-style:none;}
::selection{background:rgba(184,240,60,.45);color:#14161A;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:var(--container-wide);margin:0 auto;padding:0 24px;}

a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand-lime);
  outline-offset:2px;
  border-radius:6px;
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink-900);color:#fff;padding:12px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0;}

/* ============ 导航 ============ */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(20,22,26,.95);
  box-shadow:0 10px 30px rgba(20,22,26,.30);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:76px;
  transition:height .2s ease;
}
.site-header.is-stuck .nav-inner{height:60px;}

.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--grad-a);
  display:grid;place-items:center;flex:none;
  box-shadow:0 6px 16px rgba(184,240,60,.25);
  transition:transform .2s ease;
}
.brand:hover .brand-mark{transform:translateY(-2px) rotate(-4deg);}
.brand-mark svg{width:21px;height:21px;}
.brand-text{display:flex;flex-direction:column;line-height:1.06;}
.brand-text strong{font-size:17px;font-weight:800;color:#fff;letter-spacing:.02em;}
.brand-text em{font-size:11px;font-style:normal;color:rgba(255,255,255,.62);letter-spacing:.16em;}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;
  min-height:44px;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  border-radius:12px;
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.10);}
.nav-link.is-active{color:var(--ink-900);background:var(--brand-lime);font-weight:700;}
.nav-link.is-active:hover{background:var(--brand-lime);color:var(--ink-900);}

.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.22);
  cursor:pointer;
  position:relative;
  flex:none;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translateX(-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:14.5px;font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-lime{background:var(--grad-a);color:var(--ink-900);}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(184,240,60,.30);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.22);}
.btn-ghost:hover{background:rgba(255,255,255,.20);transform:translateY(-2px);}
.btn-coral{background:var(--grad-b);color:#fff;}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,61,.30);}
.btn-outline{background:transparent;color:var(--text-900);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--brand-mint);color:#127A5C;transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}

/* ============ 阅读进度 ============ */
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-a);z-index:120;
  transition:width .12s linear;
}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:140px 0 64px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(20,22,26,.88) 0%,rgba(20,22,26,.74) 55%,rgba(20,22,26,.94) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(184,240,60,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(184,240,60,.09) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  -webkit-mask-image:radial-gradient(circle at 72% 26%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 72% 26%,#000 0%,transparent 72%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.02em;
}
.breadcrumb a{color:rgba(255,255,255,.74);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-lime);}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.breadcrumb .current{
  color:#fff;font-weight:600;
  max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.article-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  margin:20px 0 22px;
  max-width:19ch;
}
@media (min-width:1025px){
  .article-hero h1{max-width:22ch;}
}

.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13.5px;color:rgba(255,255,255,.66);letter-spacing:.02em;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.35);}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em;
}
.chip-lime{
  background:rgba(184,240,60,.16);
  color:#DCFB93;
  border:1px solid rgba(184,240,60,.38);
}
.chip-dark{
  background:var(--ink-900);color:var(--brand-lime);
}

/* ============ 正文区 ============ */
.article-section{background:var(--bg);padding:56px 0 72px;}
.article-shell{max-width:860px;margin:0 auto;}

.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(24px,4vw,56px);
  box-shadow:var(--sh-1);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body > *:last-child{margin-bottom:0;}
.article-body p{margin:0 0 1.2em;color:var(--text-900);}
.article-body h2{
  position:relative;
  font-size:clamp(24px,3vw,32px);
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.005em;
  margin:64px 0 20px;
  padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:var(--grad-a);
}
.article-body h3{
  font-size:clamp(18px,2vw,22px);
  line-height:1.42;font-weight:700;
  margin:40px 0 14px;
}
.article-body h4{font-size:17px;font-weight:700;margin:28px 0 10px;}
.article-body a{
  color:#1B7F63;
  border-bottom:1px solid rgba(47,211,160,.45);
  transition:color .18s ease,border-color .18s ease;
}
.article-body a:hover{color:var(--ink-900);border-bottom-color:var(--brand-lime);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.6em;padding-left:.15em;}
.article-body ul li::marker{color:var(--brand-mint);}
.article-body ol li::marker{color:#8CBF1F;font-weight:700;}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;
  background:var(--surface-2);
  border-left:4px solid var(--brand-lime);
  border-radius:0 16px 16px 0;
  color:var(--text-600);
}
.article-body blockquote p{margin:0;}
.article-body img{
  max-width:100%;height:auto;
  border-radius:16px;
  margin:26px auto;
}
.article-body figure{margin:28px 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{
  margin-top:10px;font-size:13.5px;color:var(--text-300);
  text-align:center;letter-spacing:.02em;
}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--surface-2);font-weight:700;}
.article-body code{background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:.92em;}
.article-body pre{
  background:var(--ink-900);color:#E6E9E5;
  padding:18px 20px;border-radius:16px;overflow-x:auto;
  font-size:14.5px;line-height:1.7;
}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0;}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;
  min-height:260px;
  padding:40px 24px;
}
.empty-icon{
  width:64px;height:64px;border-radius:20px;
  background:var(--surface-2);
  display:grid;place-items:center;
  border:1px solid var(--line);
}
.empty-icon svg{width:28px;height:28px;stroke:var(--ink-900);}
.empty-state h3{font-size:20px;font-weight:700;}
.empty-state p{color:var(--text-600);font-size:15px;max-width:44ch;}

/* ============ 文末操作条 ============ */
.article-actions{
  margin-top:28px;
  border-radius:var(--r-lg);
  padding:24px 28px;
  background:linear-gradient(120deg,rgba(184,240,60,.20) 0%,rgba(47,211,160,.14) 100%);
  border:1px solid rgba(47,211,160,.32);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.article-actions-text h3{font-size:18px;font-weight:700;letter-spacing:.01em;}
.article-actions-text p{font-size:14px;color:var(--text-600);margin-top:4px;}
.article-actions-btns{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 相关推荐 ============ */
.related-section{background:var(--surface);padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.005em;line-height:1.3;
}
.section-head p{font-size:14.5px;color:var(--text-600);margin-top:8px;}
.section-head .more{
  font-size:14px;font-weight:700;color:#127A5C;
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.section-head .more:hover{border-bottom-color:var(--brand-lime);color:var(--ink-900);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(47,211,160,.35);}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--surface-2);
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .card-media img{transform:scale(1.04);}
.card-media .chip{position:absolute;left:12px;top:12px;background:rgba(20,22,26,.86);color:var(--brand-lime);}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:17.5px;font-weight:700;line-height:1.42;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  margin-top:10px;font-size:14.5px;color:var(--text-600);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-300);letter-spacing:.02em;
}
.card-foot .arrow{
  width:30px;height:30px;border-radius:50%;
  background:var(--surface-2);
  display:grid;place-items:center;
  transition:background .2s ease,transform .2s ease;
}
.post-card:hover .card-foot .arrow{background:var(--grad-a);transform:translateX(3px);}
.card-foot .arrow svg{width:14px;height:14px;stroke:var(--ink-900);}

/* ============ 返回入口 ============ */
.back-section{background:var(--bg);padding:0 0 72px;}
.back-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 26px;
  background:var(--ink-900);
  border-radius:var(--r-lg);
  color:#fff;
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset;
}
.back-bar p{font-size:14.5px;color:rgba(255,255,255,.66);}
.back-bar strong{display:block;font-size:17px;font-weight:700;color:#fff;margin-bottom:2px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-a);opacity:.5;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.60);max-width:38ch;}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{
  font-size:14px;color:rgba(255,255,255,.66);
  display:inline-block;min-height:24px;
  transition:color .2s ease,transform .2s ease;
}
.footer-col li a:hover{color:var(--brand-lime);transform:translateX(3px);}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.60);margin-bottom:10px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.44);letter-spacing:.02em;
}

/* ============ 断点 ============ */
@media (max-width:1024px){
  .container,.container-wide{padding:0 20px;}
  .nav-actions{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .main-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(320px,86vw);
    margin-left:0;
    padding:96px 20px 28px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:rgba(20,22,26,.98);
    border-left:1px solid rgba(255,255,255,.08);
    box-shadow:-20px 0 50px rgba(0,0,0,.35);
    transform:translateX(102%);
    transition:transform .28s ease;
    z-index:100;
    overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:16px;min-height:48px;}
  .nav-link.is-active{background:rgba(184,240,60,.16);color:var(--brand-lime);}

  .article-hero{padding:120px 0 54px;}
  .article-hero h1{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:560px){
  .container,.container-wide{padding:0 16px;}
  .nav-inner{height:64px;}
  .site-header.is-stuck .nav-inner{height:58px;}
  .brand-text strong{font-size:15.5px;}
  .brand-text em{font-size:10px;letter-spacing:.12em;}
  .brand-mark{width:36px;height:36px;}

  .article-hero{padding:104px 0 42px;}
  .article-hero h1{margin:16px 0 18px;}
  .breadcrumb .current{max-width:22ch;}
  .meta-row{font-size:12.5px;gap:10px;}

  .article-section{padding:36px 0 52px;}
  .article-body{font-size:16px;line-height:1.8;border-radius:18px;}
  .article-body h2{margin:44px 0 16px;}
  .article-body h3{margin:30px 0 12px;}

  .article-actions{padding:20px;border-radius:18px;}
  .article-actions-btns{width:100%;}
  .article-actions-btns .btn{flex:1 1 auto;}

  .related-section{padding:52px 0;}
  .card-grid{grid-template-columns:1fr;gap:18px;}

  .back-section{padding:0 0 52px;}
  .back-bar{padding:20px;border-radius:18px;flex-direction:column;align-items:flex-start;}

  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-1:0 8px 24px rgba(20,22,26,.08);
  --shadow-2:0 16px 40px rgba(20,22,26,.14);
  --maxw:1200px;
  --maxw-wide:1320px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-900);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"DIN Alternate",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:6px;}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%;}
.container-wide{max-width:var(--maxw-wide);margin:0 auto;padding:0 24px;width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  position:fixed;
  background:rgba(20,22,26,.94);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 8px 24px rgba(20,22,26,.18);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-scrolled .nav-inner{min-height:56px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--grad-a);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(20,22,26,.18);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{
  font-size:17px;font-weight:800;letter-spacing:.01em;
  color:#fff;
}
.brand-text em{
  font-style:normal;font-size:11.5px;letter-spacing:.14em;
  color:rgba(255,255,255,.68);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.82);
  padding:8px 12px;
  border-radius:10px;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:5px;height:2px;
  background:var(--brand-lime);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:#fff;background:rgba(255,255,255,.08);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.08);
  border-radius:12px;
  cursor:pointer;
  position:relative;
  flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;
  background:#fff;border-radius:2px;transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}
.mobile-nav{
  display:none;
  background:rgba(20,22,26,.97);
  border-top:1px solid rgba(255,255,255,.10);
  padding:10px 0 18px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav a{
  display:block;
  min-height:44px;
  padding:11px 24px;
  color:rgba(255,255,255,.86);
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-nav a.is-active{color:var(--brand-lime);font-weight:600;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:14px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:12px;}
.btn-lime{background:var(--grad-a);color:var(--ink-900);box-shadow:0 8px 20px rgba(47,211,160,.28);}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(47,211,160,.34);color:var(--ink-900);}
.btn-coral{background:var(--grad-b);color:#fff;box-shadow:0 8px 20px rgba(255,106,61,.28);}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,61,.34);color:#fff;}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.26);}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);color:#fff;}
.btn-outline{background:transparent;color:var(--text-900);border-color:var(--line);}
.btn-outline:hover{border-color:var(--ink-900);transform:translateY(-2px);color:var(--text-900);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;letter-spacing:.02em;
  color:rgba(255,255,255,.66);
  margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.66);}
.crumb a:hover{color:var(--brand-lime);}
.crumb .sep{opacity:.5;}
.crumb .current{color:#fff;font-weight:700;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  padding:150px 0 74px;
}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(20,22,26,.94) 0%,rgba(20,22,26,.80) 46%,rgba(20,22,26,.58) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:88px 88px;
  opacity:.55;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(184,240,60,.14);
  border:1px solid rgba(184,240,60,.42);
  color:var(--brand-lime);
  font-size:12px;letter-spacing:.08em;font-weight:600;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  margin-bottom:20px;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
  max-width:720px;
  margin-bottom:28px;
}
.hero-badges{
  display:flex;gap:12px;flex-wrap:wrap;
  margin-bottom:30px;
}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  font-size:12px;letter-spacing:.08em;
  color:rgba(255,255,255,.72);
}
.badge b{
  font-size:15px;font-weight:800;letter-spacing:0;
  color:var(--brand-lime);
  font-variant-numeric:tabular-nums;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 锚点条 ============ */
.anchor-bar{
  display:none;
  position:sticky;top:0;z-index:40;
  background:rgba(245,246,244,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  padding:10px 0;
}
.anchor-bar .anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;
  padding:0 16px;
  scrollbar-width:none;
}
.anchor-bar .anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-link{
  flex:0 0 auto;
  padding:9px 16px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-600);
  min-height:40px;
  display:inline-flex;align-items:center;
}
.anchor-link:hover{border-color:var(--brand-mint);color:var(--text-900);}

/* ============ 区块 ============ */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-dark{background:var(--ink-900);color:#fff;}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.section-head p{
  color:var(--text-600);
  font-size:16.5px;
  line-height:1.8;
}
.section-dark .section-head p{color:rgba(255,255,255,.72);}
.section-line{
  height:2px;width:64px;border-radius:2px;
  background:var(--grad-a);
  margin-bottom:20px;
}
.section-line.op{opacity:.5;}

/* ============ 主布局：双列 + 粘性目录 ============ */
.page-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:36px;
  align-items:start;
}
.main-col{min-width:0;}

.guide-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.guide-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,211,160,.4);}
.card-thumb{
  position:relative;
  aspect-ratio:16/10;
  background:var(--surface-2);
  overflow:hidden;
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.guide-card:hover .card-thumb img{transform:scale(1.04);}
.card-thumb .tag-on-img{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;
  background:rgba(20,22,26,.72);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  color:var(--brand-lime);
  font-size:12px;letter-spacing:.08em;font-weight:600;
}
.card-body{padding:22px 22px 0;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{
  font-size:19px;line-height:1.45;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:15px;line-height:1.75;color:var(--text-600);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  min-height:78px;
}
.card-foot{
  margin-top:auto;
  padding:14px 22px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-300);letter-spacing:.02em;
}
.card-foot .arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--text-600);font-weight:600;
}
.guide-card:hover .card-foot .arrow{color:var(--ink-900);}
.tag-coral{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  background:rgba(255,106,61,.12);
  border:1px solid rgba(255,106,61,.42);
  color:#D9481C;
  font-size:12px;letter-spacing:.06em;font-weight:600;
}
.tag-mint{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  background:rgba(47,211,160,.14);
  border:1px solid rgba(47,211,160,.4);
  color:#0F7A5C;
  font-size:12px;letter-spacing:.06em;font-weight:600;
}

/* 粘性目录 */
.side-col{position:relative;}
.toc{
  position:sticky;top:96px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.toc-title{
  font-size:13px;letter-spacing:.08em;font-weight:700;
  color:var(--text-300);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;align-items:center;gap:12px;
  padding:10px 10px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-600);
  min-height:44px;
  transition:background .18s ease,color .18s ease;
}
.toc-list a:hover{background:var(--surface-2);color:var(--text-900);}
.toc-list a.is-current .toc-no{background:var(--grad-a);color:var(--ink-900);}
.toc-no{
  flex:0 0 auto;
  width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface-2);
  font-size:12.5px;font-weight:800;
  color:var(--text-600);
  font-variant-numeric:tabular-nums;
}
.toc-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.75;color:var(--text-300);
}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.scene-icon{
  width:46px;height:46px;border-radius:12px;
  background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.scene-icon svg{width:24px;height:24px;stroke:#14161A;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.scene-card h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:10px;}
.scene-card p{font-size:15px;line-height:1.8;color:var(--text-600);}

/* ============ 操作顺序（步骤条） ============ */
.steps{display:flex;flex-direction:column;gap:0;}
.step{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:20px;
  padding-bottom:30px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";
  position:absolute;left:31px;top:56px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(184,240,60,.85),rgba(47,211,160,.28));
}
.step:last-child::before{display:none;}
.step-no{
  width:64px;height:56px;border-radius:14px;
  background:var(--grad-a);
  color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;
  font-variant-numeric:tabular-nums;
  box-shadow:0 8px 20px rgba(47,211,160,.24);
  position:relative;z-index:1;
}
.step-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
}
.step-body h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.step-body p{font-size:15.5px;line-height:1.8;color:var(--text-600);}
.step-note{
  margin-top:14px;
  padding:12px 16px;
  border-radius:var(--r-sm);
  background:rgba(255,106,61,.08);
  border-left:4px solid var(--brand-coral);
  font-size:14px;line-height:1.75;color:#B03D18;
}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(47,211,160,.45);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  background:none;border:0;
  text-align:left;
  font-size:17px;font-weight:600;
  color:var(--text-900);
  cursor:pointer;
  min-height:44px;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;left:0;top:16px;bottom:16px;width:4px;
  border-radius:0 4px 4px 0;
  background:var(--grad-a);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q .chev{
  flex:0 0 auto;width:22px;height:22px;
  transition:transform .2s ease;
}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15.5px;line-height:1.85;color:var(--text-600);
}

/* ============ CTA ============ */
.cta-strip{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:28px;
  align-items:center;
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset,var(--shadow-2);
}
.cta-strip::after{
  content:"";
  position:absolute;right:-80px;top:-80px;
  width:280px;height:280px;border-radius:50%;
  background:var(--grad-a);
  opacity:.14;
}
.cta-strip h2{
  font-size:clamp(21px,2.6vw,28px);
  font-weight:700;color:#fff;
  margin-bottom:10px;line-height:1.4;
}
.cta-strip p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:600px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* ============ 更多专题 ============ */
.more-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.more-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  font-size:15.5px;font-weight:600;
  min-height:44px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.more-link:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,211,160,.45);color:var(--text-900);}
.more-link svg{width:18px;height:18px;stroke:#14161A;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--ink-900);
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
  margin-top:76px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-a);
  opacity:.5;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:var(--grad-a);}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:400px;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text em{color:rgba(255,255,255,.6);}
.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.06em;
  color:#fff;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col ul a{
  display:inline-flex;align-items:center;
  min-height:38px;
  font-size:14.5px;color:rgba(255,255,255,.66);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col ul a:hover{color:var(--brand-lime);padding-left:4px;}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding-top:22px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}
.mobile-cta{
  display:none;
  position:fixed;right:16px;bottom:16px;z-index:70;
  padding:0 20px;min-height:48px;
  border-radius:999px;
  background:var(--grad-b);
  color:#fff;font-weight:700;font-size:15px;
  align-items:center;justify-content:center;
  box-shadow:0 12px 28px rgba(255,106,61,.36);
}
.mobile-cta:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .main-nav{gap:0;}
  .nav-link{font-size:14.5px;padding:8px 9px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:1024px){
  .main-nav,.nav-actions{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .page-layout{grid-template-columns:minmax(0,1fr);}
  .side-col{display:none;}
  .anchor-bar{display:block;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .more-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-strip{grid-template-columns:minmax(0,1fr);}
  .page-hero{padding:130px 0 64px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container,.container-wide{padding:0 20px;}
  .guide-grid{grid-template-columns:minmax(0,1fr);}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .more-grid{grid-template-columns:minmax(0,1fr);}
  .step{grid-template-columns:48px minmax(0,1fr);gap:14px;}
  .step-no{width:48px;height:48px;font-size:17px;}
  .step::before{left:23px;top:50px;}
  .step-body{padding:18px 18px;}
  .cta-strip{padding:30px 22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .mobile-cta{display:inline-flex;}
  .site-footer{padding-bottom:84px;}
}
@media (max-width:560px){
  .container,.container-wide{padding:0 16px;}
  .page-hero{padding:112px 0 52px;}
  .hero-sub{font-size:15.5px;}
  .hero-badges{gap:8px;}
  .badge{padding:7px 12px;font-size:11.5px;}
  .hero-actions .btn{width:100%;}
  .section{padding:52px 0;}
  .card-body{padding:18px 18px 0;}
  .card-foot{padding:12px 18px 18px;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr;}
  .cr thead{}
  .crumb{font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(20,22,26,.08);
  --shadow-2:0 16px 40px rgba(20,22,26,.14);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text-900);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--text-900);letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1320px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700}
.section-head .section-sub{color:var(--text-600);font-size:15px;max-width:640px;margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-600);font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-a);border-radius:2px}
.link-more{font-size:14px;font-weight:600;color:var(--text-900);border-bottom:2px solid var(--brand-lime);padding-bottom:2px;white-space:nowrap}
.link-more:hover{color:var(--brand-coral);border-bottom-color:var(--brand-coral)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(20,22,26,.30);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 30px rgba(20,22,26,.18);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{background:rgba(20,22,26,.96);border-bottom-color:rgba(255,255,255,.08);box-shadow:0 6px 24px rgba(20,22,26,.22)}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:72px;transition:min-height .2s ease}
.site-header.is-scrolled .nav-inner{min-height:56px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-a);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;font-weight:800;color:#fff;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.62)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:flex;align-items:center;min-height:44px;
  padding:6px 12px;font-size:15px;color:rgba(255,255,255,.76);border-radius:var(--radius-pill);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:var(--grad-a);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius-sm);background:rgba(255,255,255,.08);cursor:pointer;
  position:relative;margin-left:auto;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:12px;right:12px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 20px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;position:relative;overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px;border-radius:12px}
.btn-lime{background:var(--grad-a);color:var(--ink-900);box-shadow:0 10px 24px rgba(47,211,160,.28)}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 32px rgba(47,211,160,.34)}
.btn-coral{background:var(--grad-b);color:#fff;box-shadow:0 10px 24px rgba(255,106,61,.28)}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,106,61,.34)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.24)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--text-900);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand-mint);color:var(--ink-900);transform:translateY(-2px)}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:168px 0 84px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,22,26,.94) 0%,rgba(20,22,26,.80) 46%,rgba(20,22,26,.62) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero .eyebrow{color:rgba(255,255,255,.72)}
.hero-tagline{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:20px;padding:7px 16px;
  border-radius:var(--radius-pill);border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.08);font-size:13px;letter-spacing:.04em;color:rgba(255,255,255,.86);
}
.hero-tagline i{width:7px;height:7px;border-radius:50%;background:var(--brand-lime);display:inline-block}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;color:#fff;
  max-width:880px;letter-spacing:-.01em;
}
.cat-hero .hero-desc{max-width:720px;margin-top:20px;font-size:17px;color:rgba(255,255,255,.78)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.badge-row{display:flex;gap:12px;margin-top:40px;overflow-x:auto;padding-bottom:4px}
.badge{
  display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;
  padding:8px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);
  font-size:13px;color:rgba(255,255,255,.78);
}
.badge b{font-size:14px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.04em}
.badge-lime{background:rgba(184,240,60,.14);border-color:rgba(184,240,60,.34)}
.badge-lime b{color:var(--brand-lime)}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-300);padding:14px 0;letter-spacing:.02em}
.breadcrumb a{color:var(--text-600)}
.breadcrumb a:hover{color:var(--brand-coral)}
.breadcrumb .sep{color:var(--text-300)}
.breadcrumb .current{color:var(--text-900);font-weight:600}

/* ---------- intro strip ---------- */
.intro-strip{background:var(--surface);border-bottom:1px solid var(--line)}
.intro-grid{display:grid;grid-template-columns:1.2fr .9fr;gap:48px;padding:64px 0}
.intro-grid h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:700;margin-bottom:18px}
.intro-grid p{color:var(--text-600)}
.intro-facts{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-content:start}
.fact-card{
  background:var(--surface-2);border-radius:var(--radius-md);padding:20px;
  border:1px solid var(--line);
}
.fact-card span{display:block;font-size:13px;color:var(--text-600);letter-spacing:.02em}
.fact-card b{display:block;margin-top:6px;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}
.fact-card b i{font-style:normal;font-size:14px;font-weight:600;color:var(--text-600);margin-left:4px}

/* ---------- timeline ---------- */
.timeline-wrap{position:relative}
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;top:12px;bottom:12px;left:167px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(184,240,60,.9),rgba(47,211,160,.75),rgba(20,22,26,.06));
}
.tl-item{
  display:grid;grid-template-columns:128px 40px 1fr;column-gap:20px;
  align-items:start;margin-bottom:36px;position:relative;
}
.tl-item:last-child{margin-bottom:0}
.tl-when{padding-top:26px;text-align:right}
.tl-phase{
  display:block;font-size:12px;letter-spacing:.08em;font-weight:700;
  color:var(--text-900);text-transform:uppercase;
}
.tl-phase em{font-style:normal;background:var(--grad-a);-webkit-background-clip:text;background-clip:text;color:transparent}
.tl-when strong{display:block;margin-top:6px;font-size:14px;font-weight:600;color:var(--text-600)}
.tl-track{display:flex;justify-content:center;padding-top:30px}
.tl-dot{
  width:18px;height:18px;border-radius:50%;background:var(--grad-a);
  box-shadow:0 0 0 6px rgba(184,240,60,.16),0 0 0 1px rgba(20,22,26,.06);
}
.tl-item--slim .tl-dot{background:var(--grad-b);box-shadow:0 0 0 6px rgba(255,106,61,.14),0 0 0 1px rgba(20,22,26,.06)}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-1);
  display:grid;gap:22px;align-items:start;
  transition:transform .25s ease,box-shadow .25s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.tl-item--wide .tl-card{grid-template-columns:1.35fr 1fr}
.tl-item--slim .tl-card{grid-template-columns:1fr 1.35fr;max-width:88%;margin-left:auto}
.tl-figure{
  border-radius:var(--radius-md);overflow:hidden;background:var(--surface-2);
  aspect-ratio:4/3;position:relative;
}
.tl-item--slim .tl-figure{order:2}
.tl-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.tl-card:hover .tl-figure img{transform:scale(1.04)}
.tl-body h3{font-size:clamp(18px,2vw,22px);line-height:1.4;font-weight:600;margin:10px 0 12px}
.tl-body p{color:var(--text-600);font-size:15.5px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:var(--surface-2);color:var(--text-600);
}
.tag-lime{background:rgba(184,240,60,.22);color:#3C5A00}
.tag-mint{background:rgba(47,211,160,.18);color:#0B6B4E}
.tag-coral{background:rgba(255,106,61,.16);color:#B23A17}
.check-list{margin-top:14px;display:grid;gap:8px}
.check-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-600)}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:3px;
  background:var(--grad-a);
}
.tl-meta{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-300);letter-spacing:.02em;
}
.tl-meta .meta-badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--ink-900);color:var(--brand-lime);font-size:12px;font-weight:600;letter-spacing:.06em;
}

/* ---------- steps ---------- */
.steps-band{background:var(--ink-900);color:#fff;border-radius:0;position:relative;overflow:hidden}
.steps-band::before{
  content:"";position:absolute;top:-120px;right:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(184,240,60,.20),transparent 68%);
}
.steps-band .container{position:relative;z-index:2}
.steps-band h2{color:#fff}
.steps-band .section-sub{color:rgba(255,255,255,.7)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.step{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-md);padding:24px;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(184,240,60,.45);background:rgba(255,255,255,.08)}
.step b{display:block;font-size:13px;letter-spacing:.14em;color:var(--brand-lime);font-variant-numeric:tabular-nums}
.step h3{color:#fff;font-size:18px;font-weight:600;margin:12px 0 10px}
.step p{color:rgba(255,255,255,.68);font-size:14.5px}

/* ---------- featured cards ---------- */
.card-grid{margin-left:-12px;margin-right:-12px}
.card-grid > [class*="column"]{padding-left:12px;padding-right:12px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card-figure{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}
.card-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-figure img{transform:scale(1.04)}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;line-height:1.45;font-weight:600;margin:12px 0 10px}
.card-body p{color:var(--text-600);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-300);
}
.card-foot .arrow{font-weight:700;color:var(--ink-900);transition:transform .2s ease}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ---------- subscribe ---------- */
.subscribe{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sub-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:64px 0;align-items:center}
.sub-grid h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:700;margin-bottom:14px}
.sub-grid p{color:var(--text-600)}
.sub-form{display:grid;gap:14px}
.field{display:grid;gap:8px}
.field label{font-size:14px;font-weight:600;color:var(--text-900)}
.field input{
  width:100%;min-height:48px;padding:12px 14px;font-size:15px;font-family:inherit;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2);
  color:var(--text-900);transition:border-color .2s ease,background .2s ease;
}
.field input::placeholder{color:var(--text-300)}
.field input:focus{outline:none;border-color:var(--brand-mint);background:#fff;box-shadow:0 0 0 3px rgba(47,211,160,.22)}
.form-hint{font-size:13px;color:var(--text-300)}
.form-note{font-size:14px;color:var(--brand-coral);min-height:20px}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink-900);border-radius:var(--radius-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  border:1px solid rgba(255,255,255,.08);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,211,160,.20),transparent 70%);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35}
.cta-band p{color:rgba(255,255,255,.68);margin-top:10px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion{border:0;background:transparent;margin:0}
.accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);position:relative;
}
.accordion-item::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-a);
  opacity:0;transition:opacity .2s ease;
}
.accordion-item.is-active::after{opacity:1}
.accordion-title{
  font-size:17px;font-weight:600;color:var(--text-900);border:0;
  padding:20px 56px 20px 26px;background:transparent;transition:color .2s ease;
}
.accordion-title:hover{color:var(--brand-coral)}
.accordion-title::before{
  color:var(--text-300);right:24px;transition:transform .2s ease,color .2s ease;
}
.accordion-item.is-active .accordion-title::before{color:var(--brand-mint);transform:rotate(180deg)}
.accordion-content{
  border:0 !important;background:transparent;padding:0 26px 22px;
  color:var(--text-600);font-size:15.5px;line-height:1.8;
}

/* ---------- mobile cta ---------- */
.mobile-cta{
  display:none;position:fixed;right:16px;bottom:16px;z-index:90;
  box-shadow:0 14px 30px rgba(255,106,61,.34);
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);position:relative;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-a);opacity:.5}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.site-footer .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;color:rgba(255,255,255,.62);max-width:420px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);position:relative}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;background:var(--brand-lime);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-col p{font-size:14.5px;color:rgba(255,255,255,.62);margin-bottom:12px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-toggle{display:block}
  .nav-actions{display:none}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,84vw);z-index:99;
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    padding:96px 24px 32px;background:rgba(20,22,26,.98);
    border-left:1px solid rgba(255,255,255,.10);
    transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:var(--radius-sm)}
  .nav-link::after{display:none}
  .nav-link.is-active{background:rgba(184,240,60,.14)}
  .mobile-cta{display:inline-flex}
  .cat-hero{padding:140px 0 64px}
  .intro-grid{grid-template-columns:1fr;gap:32px;padding:52px 0}
  .timeline::before{left:19px}
  .tl-item{grid-template-columns:40px 1fr;column-gap:14px;margin-bottom:28px}
  .tl-when{grid-column:2;grid-row:1;padding-top:20px;text-align:left}
  .tl-track{grid-column:1;grid-row:1 / span 2;padding-top:24px}
  .tl-card{grid-column:2;grid-row:2;margin-top:14px;grid-template-columns:1fr !important;max-width:100% !important;margin-left:0 !important}
  .tl-item--slim .tl-figure{order:0}
  .steps{grid-template-columns:1fr 1fr}
  .sub-grid{grid-template-columns:1fr;gap:28px;padding:52px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px}
}
@media (max-width:560px){
  .container,.container-wide{padding:0 16px}
  .section{padding:60px 0}
  .section-tight{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cat-hero{padding:126px 0 56px}
  .cat-hero .hero-desc{font-size:15.5px}
  .hero-cta .btn{flex:1 1 100%}
  .intro-facts{grid-template-columns:1fr}
  .tl-card{padding:20px}
  .steps{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .card-grid{margin-left:0;margin-right:0}
  .card-grid > [class*="column"]{padding-left:0;padding-right:0}
  .card-grid > [class*="column"] + [class*="column"]{margin-top:20px}
}

/* roulang page: category3 */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-1:0 8px 24px rgba(20,22,26,.08);
  --shadow-2:0 16px 40px rgba(20,22,26,.14);
  --container:1200px;
  --container-wide:1320px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;background:transparent}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700}
h3{font-size:clamp(18px,2vw,22px);line-height:1.4;font-weight:600}
p{color:var(--text-600)}

/* Foundation 覆盖 */
body,button,input,select,textarea{font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif}
.accordion,.accordion-title,.accordion-content{font-family:inherit}
.row,.grid-x{max-width:none}

/* ============ 容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.container-wide{width:100%;max-width:var(--container-wide);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:44px}
.section-head h2{margin-bottom:16px}
.section-head p{max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:700;
  color:var(--ink-900);text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  background:rgba(184,240,60,.28);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-mint)}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:999;
  background:rgba(20,22,26,.30);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 6px 24px rgba(20,22,26,.18);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:var(--ink-700);
  border-bottom-color:rgba(255,255,255,.08);
  box-shadow:0 8px 26px rgba(20,22,26,.28);
}
.nav-inner{
  display:flex;align-items:center;gap:26px;
  min-height:84px;
  transition:min-height .2s ease;
}
.site-header.is-scrolled .nav-inner{min-height:64px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--grad-a);
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(47,211,160,.28);
  flex:0 0 auto;
}
.brand-mark svg{width:21px;height:21px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;color:#fff;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:rgba(255,255,255,.66);letter-spacing:.06em}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:10px 13px;
  font-size:15px;color:rgba(255,255,255,.82);
  border-radius:10px;
  transition:color .18s ease,background .18s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:9px;height:2px;
  background:var(--brand-lime);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;
  width:46px;height:46px;border-radius:12px;
  margin-left:auto;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.10);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 24px;
  border-radius:14px;
  font-size:15.5px;font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:44px;padding:9px 18px;font-size:14.5px;border-radius:12px}
.btn-coral{
  background:var(--grad-b);color:#fff;
  box-shadow:0 10px 24px rgba(255,106,61,.32);
}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,106,61,.4)}
.btn-lime{
  background:var(--grad-a);color:var(--ink-900);
  box-shadow:0 8px 20px rgba(47,211,160,.3);
}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(47,211,160,.38)}
.btn-ghost{
  background:rgba(255,255,255,.10);color:#fff;
  border-color:rgba(255,255,255,.26);
}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-outline-light{
  background:transparent;color:#fff;
  border-color:rgba(255,255,255,.46);
}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-outline-ink{
  background:transparent;color:var(--ink-900);
  border-color:rgba(20,22,26,.22);
}
.btn-outline-ink:hover{background:var(--ink-900);color:#fff;transform:translateY(-2px)}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:5px 12px;border-radius:999px;
  background:rgba(47,211,160,.16);color:#177A5E;
}
.tag-lime{background:rgba(184,240,60,.36);color:#3E5A00}
.tag-dark{background:var(--ink-900);color:var(--brand-lime)}

.badge-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.data-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.20);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.data-badge .k{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.data-badge .v{font-size:15px;font-weight:800;color:var(--brand-lime);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.data-badge.on-light{background:var(--surface);border-color:var(--line);box-shadow:var(--shadow-1)}
.data-badge.on-light .k{color:var(--text-600)}
.data-badge.on-light .v{color:var(--ink-900)}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:168px 0 96px;
  background:var(--ink-900);
  overflow:hidden;
  color:#fff;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.62) 0%,rgba(20,22,26,.88) 58%,rgba(20,22,26,.96) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:900px}
.hero h1{color:#fff;margin-bottom:20px}
.hero h1 .accent{
  background:var(--grad-a);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-sub{font-size:17px;color:rgba(255,255,255,.80);max-width:720px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-line{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--grad-a);opacity:.5;
}

/* 面包屑 */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;letter-spacing:.02em;
  color:rgba(255,255,255,.62);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.78);transition:color .18s ease}
.breadcrumb a:hover{color:var(--brand-lime);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:rgba(255,255,255,.36)}
.breadcrumb .current{color:#fff;font-weight:600}
.breadcrumb.on-light{color:var(--text-300);margin-bottom:18px}
.breadcrumb.on-light a{color:var(--text-600)}
.breadcrumb.on-light a:hover{color:var(--ink-900)}
.breadcrumb.on-light .current{color:var(--ink-900)}

/* ============ 速查卡网格 ============ */
.quick-grid{margin-top:8px}
.quick-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:30px 26px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  position:relative;
  overflow:hidden;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,211,160,.4)}
.quick-num{
  display:inline-block;
  font-size:14px;font-weight:800;letter-spacing:.1em;
  color:var(--ink-900);
  padding:5px 12px;border-radius:999px;
  background:var(--grad-a);
  margin-bottom:18px;
}
.quick-card h3{margin-bottom:10px}
.quick-card p{font-size:15px;line-height:1.8}
.quick-card .icon-line{
  width:40px;height:40px;border-radius:12px;
  background:var(--surface-2);
  display:grid;place-items:center;margin-bottom:16px;
}
.quick-card .icon-line svg{width:20px;height:20px;stroke:var(--ink-900);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 图文交错区块 ============ */
.split-row{margin-bottom:56px}
.split-row:last-child{margin-bottom:0}
.block-copy .tag{margin-bottom:14px}
.block-copy h3{margin-bottom:14px}
.block-copy > p{margin-bottom:20px}

.point-list{margin:0 0 22px}
.point-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:10px;
  font-size:15.5px;
  color:var(--text-600);
  line-height:1.8;
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:9px;height:9px;border-radius:3px;
  background:var(--grad-a);
}

.figure-card{
  margin:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--surface-2);
  box-shadow:var(--shadow-1);
  border:1px solid var(--line);
  transition:transform .2s ease,box-shadow .2s ease;
}
.figure-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.figure-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  background:var(--surface-2);
  transition:transform .3s ease;
}
.figure-card:hover img{transform:scale(1.04)}
.figure-card figcaption{
  padding:14px 18px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--text-600);
  background:var(--surface);
  border-top:1px solid var(--line);
}

/* 编号步骤条 */
.step-bar{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:6px;
}
.step-bar li{
  display:flex;align-items:center;gap:10px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  padding:9px 18px 9px 9px;
  font-size:14px;
  color:var(--text-600);
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,border-color .18s ease;
}
.step-bar li:hover{transform:translateY(-2px);border-color:rgba(47,211,160,.45)}
.step-num{
  display:inline-grid;place-items:center;
  min-width:28px;height:28px;border-radius:50%;
  background:var(--ink-900);color:var(--brand-lime);
  font-size:12px;font-weight:800;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}

/* ============ 深色步骤板块 ============ */
.dark-band{
  background:var(--ink-900);
  color:#fff;
  border-radius:28px;
  padding:56px 44px;
  position:relative;
  overflow:hidden;
}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 260px at 12% 0%,rgba(184,240,60,.16),transparent 70%),
    radial-gradient(600px 240px at 88% 100%,rgba(47,211,160,.14),transparent 72%);
  pointer-events:none;
}
.dark-band > *{position:relative;z-index:1}
.dark-band h2{color:#fff;margin-bottom:14px}
.dark-band p{color:rgba(255,255,255,.74);max-width:720px}
.dark-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;margin-top:36px;
}
.dark-step{
  border-radius:var(--radius-md);
  padding:24px 20px;
  background:rgba(255,255,255,.05);
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset;
  transition:background .2s ease,transform .2s ease;
}
.dark-step:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.dark-step .step-num{margin-bottom:14px;background:var(--grad-a);color:var(--ink-900)}
.dark-step h3{color:#fff;font-size:17px;margin-bottom:8px}
.dark-step p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.75}

/* ============ 对比双栏 ============ */
.compare-card{
  height:100%;
  border-radius:var(--radius-lg);
  padding:34px 30px;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.compare-card.dark{
  background:var(--ink-900);color:#fff;border-color:transparent;
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset,var(--shadow-1);
}
.compare-card.dark p,.compare-card.dark li{color:rgba(255,255,255,.72)}
.compare-card.dark h3{color:#fff}
.compare-card h3{margin:14px 0 16px}
.compare-list li{
  position:relative;padding-left:24px;margin-bottom:12px;
  font-size:15px;color:var(--text-600);line-height:1.8;
}
.compare-list li::before{
  content:"";position:absolute;left:0;top:.75em;
  width:10px;height:2px;border-radius:2px;background:var(--brand-mint);
}
.compare-card.dark .compare-list li::before{background:var(--brand-lime)}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.faq-list{background:transparent;border:0;margin:0}
.faq-list .accordion-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease;
}
.faq-list .accordion-item:hover{box-shadow:var(--shadow-2)}
.faq-list .accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--surface-2);
  transition:background .2s ease;
}
.faq-list .accordion-item.is-active::before{background:var(--grad-a)}
.faq-list .accordion-title{
  border:0;
  border-bottom:0;
  padding:20px 62px 20px 26px;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--text-900);
  position:relative;
  transition:background .18s ease,color .18s ease;
}
.faq-list .accordion-title:hover{background:#FAFBF7}
.faq-list .accordion-title::before{
  content:"";
  position:absolute;
  right:28px;top:50%;
  width:9px;height:9px;
  margin:-7px 0 0 0;
  border-right:2px solid var(--text-600);
  border-bottom:2px solid var(--text-600);
  background:none;
  transform:rotate(45deg);
  transition:transform .2s ease,border-color .2s ease;
}
.faq-list .accordion-item.is-active .accordion-title::before{
  transform:rotate(-135deg);
  border-color:var(--ink-900);
}
.faq-list .accordion-content{
  border:0;
  padding:0 26px 22px 26px;
  background:transparent;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-600);
}

/* ============ CTA ============ */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:42px 44px;
  border-radius:var(--radius-lg);
  background:var(--ink-900);
  box-shadow:0 0 0 1px rgba(255,255,255,.08) inset,var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(184,240,60,.14) 0%,rgba(47,211,160,.06) 46%,rgba(255,106,61,.10) 100%);
  pointer-events:none;
}
.cta-card > *{position:relative;z-index:1}
.cta-card h2{color:#fff;margin-bottom:12px}
.cta-card p{color:rgba(255,255,255,.74);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  margin-top:96px;
  position:relative;
}
.site-footer::before{
  content:"";display:block;height:2px;
  background:var(--grad-a);opacity:.5;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:44px;
  padding:64px 0 44px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:420px}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;
  letter-spacing:.06em;margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{
  font-size:14.5px;
  color:rgba(255,255,255,.68);
  position:relative;
  transition:color .18s ease;
}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:100%;
  background:var(--brand-lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:10px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ============ 移动端固定 CTA ============ */
.mobile-cta{
  display:none;
  position:fixed;right:16px;bottom:18px;z-index:998;
  padding:14px 22px;border-radius:999px;
  background:var(--grad-b);color:#fff;
  font-size:15px;font-weight:700;
  box-shadow:0 12px 28px rgba(255,106,61,.42);
}
.mobile-cta:active{transform:translateY(1px)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-inner{min-height:72px}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;
    width:min(84vw,340px);
    background:var(--ink-900);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:96px 22px 32px;
    margin-left:0;
    transform:translateX(105%);
    transition:transform .24s ease;
    box-shadow:-18px 0 44px rgba(20,22,26,.42);
    border-left:1px solid rgba(255,255,255,.08);
    overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  .nav-link{
    min-height:52px;
    font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.08);
    border-radius:0;
    padding:14px 6px;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--brand-lime)}
  .nav-actions{display:none}
  .nav-toggle{display:block}
  .mobile-cta{display:inline-flex}
  .dark-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:36px 30px}
}

@media (max-width:768px){
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .hero{padding:132px 0 72px}
  .dark-band{padding:40px 24px;border-radius:22px}
  .section-head{margin-bottom:32px}
  .split-row{margin-bottom:44px}
}

@media (max-width:560px){
  .container,.container-wide{padding-left:16px;padding-right:16px}
  body{font-size:16px}
  .section{padding:52px 0}
  .hero{padding:118px 0 62px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .badge-row{gap:8px}
  .data-badge{padding:8px 14px}
  .data-badge .v{font-size:14px}
  .dark-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-card{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .step-bar li{width:100%}
  .faq-list .accordion-title{padding:18px 54px 18px 20px;font-size:16px}
  .faq-list .accordion-content{padding:0 20px 20px 20px}
}

/* roulang page: category4 */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --brand-lime:#B8F03C;
  --brand-mint:#2FD3A0;
  --brand-coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --text-900:#14161A;
  --text-600:#5A6068;
  --text-300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-1:0 8px 24px rgba(20,22,26,.08);
  --shadow-2:0 16px 40px rgba(20,22,26,.14);
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-900);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ink-900)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:4px}
section[id]{scroll-margin-top:92px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1320px;margin:0 auto;padding:0 24px}
.row{margin-left:-12px;margin-right:-12px}
.row>.columns,.row>.column{padding-left:12px;padding-right:12px}

/* ---------- header ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:80;
  background:rgba(20,22,26,.30);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .2s ease,box-shadow .2s ease,backdrop-filter .2s ease;
}
.nav-inner{display:flex;align-items:center;gap:18px;height:76px;transition:height .2s ease}
.site-header.is-stuck{
  position:fixed;
  background:rgba(20,22,26,.94);
  box-shadow:0 8px 24px rgba(20,22,26,.22);
}
.site-header.is-stuck .nav-inner{height:58px}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-a);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:20px;height:20px}
.brand-text strong{display:block;font-size:17px;font-weight:800;line-height:1.15;color:#fff;letter-spacing:.01em}
.brand-text em{display:block;font-style:normal;font-size:11px;line-height:1.3;letter-spacing:.14em;color:rgba(255,255,255,.62)}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 13px;
  border-radius:12px;font-size:14.5px;color:rgba(255,255,255,.78);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.is-active{color:#fff;font-weight:700}
.nav-link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;background:var(--grad-a)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 15px;font-size:13.5px;border-radius:12px}
.btn-lime{background:var(--grad-a);color:#14161A;box-shadow:0 6px 18px rgba(47,211,160,.26)}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(47,211,160,.34);color:#14161A}
.btn-coral{background:var(--grad-b);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.28)}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,61,.34);color:#fff}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.24)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);color:#fff}
.btn-outline{background:transparent;border-color:var(--line);color:var(--text-900)}
.btn-outline:hover{border-color:var(--ink-900);transform:translateY(-2px);color:var(--text-900)}

.nav-toggle{
  display:none;position:relative;width:44px;height:44px;margin-left:auto;flex:0 0 auto;
  border-radius:12px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:#fff;transform:translate(-50%,-50%);transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .2s ease,top .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- mobile drawer ---------- */
.mobile-drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.mobile-drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(20,22,26,.55);opacity:0;transition:opacity .25s ease}
.mobile-drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--ink-900);border-left:1px solid rgba(255,255,255,.10);
  padding:26px 22px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.mobile-drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-panel .drawer-title{font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.45);margin-bottom:10px}
.drawer-panel a{
  min-height:48px;display:flex;align-items:center;padding:0 14px;border-radius:12px;
  color:rgba(255,255,255,.82);font-size:15.5px;border:1px solid transparent;
}
.drawer-panel a:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer-panel a.is-active{background:rgba(184,240,60,.14);color:#fff;font-weight:700;border-color:rgba(184,240,60,.32)}
.drawer-panel .drawer-cta{margin-top:14px;display:grid;gap:10px}
.mobile-cta{
  display:none;position:fixed;right:16px;bottom:16px;z-index:70;
  min-height:46px;padding:0 18px;border-radius:999px;background:var(--grad-b);color:#fff;
  font-size:14.5px;font-weight:700;align-items:center;gap:8px;
  box-shadow:0 12px 28px rgba(255,106,61,.34);
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;padding:156px 0 76px;
  background-color:var(--ink-900);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.88) 0%,rgba(20,22,26,.72) 46%,rgba(20,22,26,.94) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero .container-wide{position:relative;z-index:2}
.hero-row{display:flex;flex-wrap:wrap;align-items:center}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.02em;color:rgba(255,255,255,.58);margin-bottom:22px}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:rgba(255,255,255,.94);font-weight:700}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(184,240,60,.14);border:1px solid rgba(184,240,60,.32);
  font-size:12px;letter-spacing:.10em;color:#DDF8A6;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.01em;
  max-width:16em;
}
.hero h1 span{background:var(--grad-a);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:20px;max-width:640px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.76)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.badge-row{display:flex;gap:12px;margin-top:34px;overflow-x:auto;padding-bottom:4px}
.badge{
  display:inline-flex;align-items:center;gap:10px;padding:9px 16px;border-radius:999px;white-space:nowrap;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);font-size:13px;color:rgba(255,255,255,.72);
}
.badge b{font-family:var(--mono);font-size:16px;font-weight:800;color:var(--brand-lime);letter-spacing:.02em}

.hero-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 0 0 1px rgba(255,255,255,.10),0 24px 60px rgba(0,0,0,.38);
  background:var(--ink-700);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.86}
.hero-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 22px 20px;
  background:linear-gradient(180deg,rgba(20,22,26,0) 0%,rgba(20,22,26,.88) 62%);
  font-size:14.5px;color:rgba(255,255,255,.82);
}
.hero-card figcaption strong{display:block;font-size:16px;color:#fff;font-weight:700;margin-bottom:4px}

/* ---------- sections ---------- */
.section{padding:76px 0}
.section-alt{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.16em;color:var(--text-600);margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--grad-a)}
.section-title{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700}
.section-sub{margin-top:14px;color:var(--text-600);font-size:16px}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.check-num{
  display:inline-flex;align-items:center;justify-content:center;min-width:46px;height:44px;padding:0 12px;
  border-radius:14px;background:var(--grad-a);color:#14161A;
  font-family:var(--mono);font-size:18px;font-weight:800;letter-spacing:.04em;
}
.check-card h3{font-size:18px;line-height:1.45;font-weight:700;margin:18px 0 10px}
.check-card p{font-size:15px;color:var(--text-600)}
.check-list{margin-top:14px;display:grid;gap:8px}
.check-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-600)}
.check-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;background:var(--brand-mint)}

/* compare */
.compare-figure{border-radius:var(--r-md);overflow:hidden;margin-bottom:28px;background:var(--surface-2);box-shadow:var(--shadow-1)}
.compare-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.compare-figure figcaption{padding:14px 20px;font-size:13.5px;color:var(--text-600);background:var(--surface);border-top:1px solid var(--line)}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{border-radius:var(--r-lg);padding:32px 30px;border:1px solid var(--line);background:var(--surface)}
.compare-card.is-good{border-color:rgba(47,211,160,.36);background:linear-gradient(180deg,rgba(47,211,160,.12) 0%,rgba(255,255,255,0) 62%),var(--surface)}
.compare-card.is-bad{background:var(--ink-900);color:#fff;border-color:rgba(255,255,255,.10);box-shadow:0 0 0 1px rgba(255,255,255,.06)}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.compare-head h3{font-size:19px;font-weight:700}
.dot{width:12px;height:12px;border-radius:50%;flex:0 0 auto}
.dot-good{background:var(--brand-mint)}
.dot-bad{background:rgba(255,255,255,.35)}
.compare-card ul{display:grid;gap:12px}
.compare-card li{position:relative;padding-left:22px;font-size:15px;color:var(--text-600)}
.compare-card.is-bad li{color:rgba(255,255,255,.76)}
.compare-card li::before{content:"";position:absolute;left:0;top:12px;width:10px;height:2px;border-radius:2px;background:var(--brand-mint)}
.compare-card.is-bad li::before{background:rgba(255,255,255,.42)}

/* risk */
.risk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.risk-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.risk-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.risk-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-a);opacity:.75}
.warn-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:rgba(255,106,61,.12);color:#C33F18;font-size:12px;font-weight:700;letter-spacing:.08em;
}
.risk-card h3{font-size:17px;font-weight:700;margin:14px 0 8px;line-height:1.45}
.risk-card p{font-size:14.5px;color:var(--text-600)}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step::after{
  content:"";position:absolute;top:38px;right:-14px;width:20px;height:2px;
  background:linear-gradient(90deg,var(--brand-lime),var(--brand-mint));opacity:.65;
}
.step:last-child::after{display:none}
.step-index{font-family:var(--mono);font-size:13px;letter-spacing:.18em;font-weight:800;color:var(--brand-mint)}
.step h3{font-size:18px;font-weight:700;margin:12px 0 8px}
.step p{font-size:14.5px;color:var(--text-600)}

/* timeline */
.timeline{position:relative;padding-left:28px;display:grid;gap:24px}
.timeline::before{content:"";position:absolute;left:4px;top:8px;bottom:8px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--brand-lime),var(--brand-mint));opacity:.55}
.timeline li{position:relative}
.timeline li::before{content:"";position:absolute;left:-27px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--surface);border:2px solid var(--brand-mint)}
.timeline time{display:block;font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--text-300);font-weight:700}
.timeline strong{display:block;font-size:16.5px;font-weight:700;margin:6px 0 6px}
.timeline p{font-size:15px;color:var(--text-600)}

/* faq */
.faq-list{border:0;background:transparent;margin:0}
.faq-list .accordion-item{
  border:0;background:var(--surface);border-radius:var(--r-md);margin-bottom:14px;
  box-shadow:var(--shadow-1);border:1px solid var(--line);overflow:hidden;position:relative;
}
.faq-list .accordion-title{
  border:0;background:transparent;padding:20px 58px 20px 26px;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--text-900);
}
.faq-list .accordion-title:hover{background:rgba(47,211,160,.06)}
.faq-list .accordion-title::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;right:auto;width:4px;height:auto;
  margin-top:0;border:0;font-size:0;border-radius:0 4px 4px 0;
  background:var(--grad-a);opacity:.25;transition:opacity .2s ease;
}
.faq-list .accordion-item.is-active .accordion-title::before{opacity:1}
.faq-list .accordion-title::after{
  content:"";position:absolute;right:24px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--text-600);border-bottom:2px solid var(--text-600);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease,border-color .2s ease;
}
.faq-list .accordion-item.is-active .accordion-title::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--ink-900)}
.faq-list .accordion-content{
  border:0;background:transparent;padding:0 26px 22px;font-size:15.5px;color:var(--text-600);line-height:1.85;
}

/* cta */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;border-radius:var(--r-lg);
  padding:42px 44px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 24px 60px rgba(20,22,26,.22);
}
.cta-band::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-a)}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:var(--grad-a);opacity:.10;filter:blur(6px);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.72);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);padding:0 0 26px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-a);opacity:.5}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:66px 0 40px}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.9;max-width:42ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-col li a:hover{color:var(--brand-lime)}
.footer-col p{font-size:14.5px;line-height:1.9;margin-bottom:10px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:block}
  .mobile-cta{display:inline-flex}
  .hero{padding:132px 0 64px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:64px 0}
}
@media (max-width:820px){
  .compare-grid{grid-template-columns:1fr}
  .cta-band{padding:34px 26px}
}
@media (max-width:560px){
  body{font-size:16px}
  .container,.container-wide{padding:0 16px}
  .site-header .nav-inner{height:66px}
  .site-header.is-stuck .nav-inner{height:58px}
  .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:10px;letter-spacing:.10em}
  .hero{padding:118px 0 54px}
  .hero-actions .btn{width:100%}
  .check-grid,.risk-grid,.step-grid,.footer-grid{grid-template-columns:1fr}
  .check-card,.compare-card,.risk-card,.step{padding:22px 20px}
  .faq-list .accordion-title{padding:18px 52px 18px 22px;font-size:16px}
  .faq-list .accordion-content{padding:0 22px 20px}
  .footer-bottom{flex-direction:column}
  .section{padding:54px 0}
}

/* roulang page: category5 */
:root{
  --ink-900:#14161A;
  --ink-700:#23262E;
  --line:rgba(20,22,26,.10);
  --lime:#B8F03C;
  --mint:#2FD3A0;
  --coral:#FF6A3D;
  --bg:#F5F6F4;
  --surface:#FFFFFF;
  --surface-2:#EEF0EC;
  --t900:#14161A;
  --t600:#5A6068;
  --t300:#9AA0A6;
  --grad-a:linear-gradient(120deg,#B8F03C 0%,#2FD3A0 100%);
  --grad-b:linear-gradient(120deg,#FF6A3D 0%,#FF9A3D 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-btn:14px;
  --sh-1:0 8px 24px rgba(20,22,26,.08);
  --sh-2:0 16px 40px rgba(20,22,26,.14);
  --cw:1200px;
  --cww:1320px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--t900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--cw);margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:var(--cww);margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:80;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(20,22,26,.95);
  box-shadow:0 10px 30px rgba(20,22,26,.28);
  border-bottom-color:rgba(255,255,255,.10);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:80px;transition:height .2s ease;}
.site-header.is-stuck .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  background:var(--grad-a);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(47,211,160,.30);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;color:#fff;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.68);}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:12px;
  font-size:14.5px;color:rgba(255,255,255,.82);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.10);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--grad-a);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;background:rgba(255,255,255,.12);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.10);
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.site-header.is-open .nav-toggle span{background:transparent;}
.site-header.is-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
.site-header.is-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn svg{width:16px;height:16px;flex:none;}
.btn-lime{background:var(--grad-a);color:#101408;box-shadow:0 10px 26px rgba(47,211,160,.28);}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 34px rgba(47,211,160,.34);}
.btn-lime:active{transform:translateY(1px);}
.btn-coral{background:var(--grad-b);color:#fff;box-shadow:0 10px 26px rgba(255,106,61,.30);}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,106,61,.36);}
.btn-coral:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.24);}
.btn-ghost:hover{background:rgba(255,255,255,.20);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline{background:#fff;color:var(--t900);border:1px solid var(--line);box-shadow:var(--sh-1);}
.btn-outline:hover{border-color:var(--mint);color:#0d6b52;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

/* ---------- 通用区块 ---------- */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-top:14px;}
.section-head p{margin-top:16px;color:var(--t600);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;font-weight:700;color:#0d6b52;
  background:rgba(47,211,160,.14);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--grad-a);}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:34px;}
.link-more{font-size:14px;font-weight:600;color:#0d6b52;display:inline-flex;align-items:center;gap:6px;position:relative;min-height:44px;}
.link-more::after{content:"";position:absolute;left:0;bottom:14px;height:1px;width:0;background:var(--mint);transition:width .22s ease;}
.link-more:hover::after{width:100%;}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:170px 0 82px;}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.72;}
.hero-mask{position:absolute;inset:0;background:linear-gradient(96deg,rgba(20,22,26,.95) 0%,rgba(20,22,26,.82) 52%,rgba(20,22,26,.62) 100%);}
.hero-grid{
  position:absolute;inset:0;opacity:.07;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-pill{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.08em;color:#fff;
  border:1px solid rgba(184,240,60,.45);background:rgba(184,240,60,.12);
  border-radius:999px;padding:7px 16px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.01em;
  margin:22px 0 0;
}
.hero h1 .hl{color:var(--lime);}
.hero-sub{margin-top:20px;font-size:17px;color:rgba(255,255,255,.80);max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-stats{display:flex;gap:12px;margin-top:34px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin;}
.badge{
  display:inline-flex;align-items:center;gap:10px;flex:none;
  border-radius:999px;padding:9px 16px;font-size:13px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);color:rgba(255,255,255,.86);
}
.badge b{color:var(--lime);font-size:15px;letter-spacing:.04em;font-variant-numeric:tabular-nums;}
.badge-dark{background:var(--ink-900);border-color:rgba(255,255,255,.10);color:rgba(255,255,255,.80);}
.hero-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.42);
  border:1px solid rgba(255,255,255,.12);
  aspect-ratio:16/11;background:var(--ink-700);
}
.hero-card img{width:100%;height:100%;object-fit:cover;}
.hero-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,22,26,.10) 0%,rgba(20,22,26,.72) 100%);}
.hero-card-body{position:absolute;left:0;right:0;bottom:0;padding:24px;z-index:2;}
.hero-card-body h3{font-size:19px;font-weight:700;color:#fff;}
.hero-card-body p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);}

/* ---------- 面包屑 ---------- */
.crumbs{background:var(--surface);border-bottom:1px solid var(--line);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--t300);}
.crumbs li::after{content:"/";margin-left:8px;color:var(--t300);}
.crumbs li:last-child::after{content:"";}
.crumbs a{color:var(--t600);}
.crumbs a:hover{color:#0d6b52;}
.crumbs .current{color:var(--t900);font-weight:700;}

/* ---------- FAQ 工具条 ---------- */
.faq-tools{
  background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  padding:24px;display:flex;flex-direction:column;gap:18px;
}
.search-field{position:relative;display:flex;align-items:center;}
.search-field svg{position:absolute;left:16px;width:18px;height:18px;stroke:var(--t300);}
.search-field input{
  width:100%;height:52px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface-2);padding:0 16px 0 46px;font-size:15.5px;color:var(--t900);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-field input::placeholder{color:var(--t300);}
.search-field input:focus{outline:none;border-color:var(--mint);background:#fff;box-shadow:0 0 0 3px rgba(47,211,160,.20);}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  min-height:40px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--t600);
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.chip:hover{border-color:var(--mint);color:#0d6b52;transform:translateY(-2px);}
.chip.is-active{background:var(--ink-900);border-color:var(--ink-900);color:#fff;}
.chip.is-active b{color:var(--lime);}
.chip b{font-size:12.5px;font-variant-numeric:tabular-nums;color:var(--t300);}
.tools-note{font-size:13.5px;color:var(--t600);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.tools-note b{color:#0d6b52;font-variant-numeric:tabular-nums;}

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:32px;align-items:start;margin-top:32px;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  position:relative;background:var(--surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .2s ease,transform .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--grad-a);opacity:0;transition:opacity .2s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  padding:20px 22px;text-align:left;
}
.faq-index{
  flex:none;font-size:13px;font-weight:800;letter-spacing:.08em;color:#0d6b52;
  background:rgba(47,211,160,.14);border-radius:999px;padding:4px 10px;margin-top:3px;
  font-variant-numeric:tabular-nums;
}
.faq-text{flex:1;font-size:17px;font-weight:600;line-height:1.6;}
.faq-arrow{
  flex:none;width:30px;height:30px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--t600);
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.faq-arrow svg{width:14px;height:14px;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:var(--grad-a);border-color:transparent;color:#101408;}
.faq-a{
  display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{
  padding:0 22px 22px 70px;color:var(--t600);font-size:15.5px;line-height:1.85;
}
.faq-a p strong{color:var(--t900);}
.faq-cat{
  display:inline-block;margin:2px 0 0 70px;font-size:12px;letter-spacing:.08em;
  color:var(--t600);background:var(--surface-2);border-radius:999px;padding:3px 12px;
}
.faq-empty{
  display:none;text-align:center;padding:52px 24px;background:var(--surface);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
}
.faq-empty.is-show{display:block;}
.faq-empty svg{width:40px;height:40px;margin:0 auto 14px;stroke:var(--ink-700);}
.faq-empty p{color:var(--t600);font-size:15.5px;}
.faq-empty a{display:inline-block;margin-top:14px;font-weight:600;color:#0d6b52;}
.faq-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px;}
.aside-card{
  background:var(--ink-900);color:#fff;border-radius:var(--r-md);padding:24px;
  border:1px solid rgba(255,255,255,.08);
}
.aside-card h3{font-size:17px;font-weight:700;}
.aside-card p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.76);}
.aside-card ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.aside-card li{font-size:14px;color:rgba(255,255,255,.76);display:flex;gap:10px;}
.aside-card li span{color:var(--lime);font-weight:700;font-variant-numeric:tabular-nums;}
.aside-card .btn{margin-top:18px;width:100%;}
.aside-light{background:var(--surface);color:var(--t900);box-shadow:var(--sh-1);border:1px solid var(--line);}
.aside-light p{color:var(--t600);}
.aside-light li{color:var(--t600);}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card-media{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
.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 22px 0;display:flex;flex-direction:column;gap:12px;}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;letter-spacing:.08em;color:#0d6b52;
  background:rgba(47,211,160,.16);border-radius:999px;padding:4px 12px;
}
.card-body h3{font-size:20px;font-weight:700;line-height:1.45;}
.card-body p{color:var(--t600);font-size:15px;line-height:1.8;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  margin-top:auto;padding:18px 22px 22px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t600);border-top:1px solid var(--line);
}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:#0d6b52;}
.card-foot .go svg{width:14px;height:14px;transition:transform .2s ease;}
.card:hover .card-foot .go svg{transform:translateX(3px);}

/* ---------- 帮助入口矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.matrix-item{
  background:var(--surface);border-radius:var(--r-md);padding:26px 24px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.matrix-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.matrix-icon{
  width:46px;height:46px;border-radius:14px;background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;
}
.matrix-icon svg{width:22px;height:22px;stroke:var(--ink-900);}
.matrix-item h3{font-size:18px;font-weight:700;}
.matrix-item p{font-size:14.5px;color:var(--t600);}
.matrix-item a.mini{font-size:14px;font-weight:600;color:#0d6b52;display:inline-flex;align-items:center;gap:6px;min-height:34px;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,#B8F03C 0%,#2FD3A0 100%);opacity:.55;border-radius:2px;
}
.tl-item{position:relative;padding:0 0 30px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:8px;width:20px;height:20px;border-radius:999px;
  background:var(--surface);border:2px solid var(--mint);box-shadow:0 0 0 4px rgba(47,211,160,.14);
}
.tl-item h3{font-size:19px;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tl-item h3 span{font-size:12px;letter-spacing:.08em;color:var(--t600);background:var(--surface-2);border-radius:999px;padding:3px 12px;}
.tl-item p{margin-top:10px;color:var(--t600);font-size:15.5px;max-width:760px;}

/* ---------- 数据条 + CTA ---------- */
.stats-band{
  background:var(--ink-900);color:#fff;border-radius:var(--r-lg);
  padding:34px 32px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  border:1px solid rgba(255,255,255,.08);
}
.stat b{display:block;font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--lime);letter-spacing:.02em;font-variant-numeric:tabular-nums;}
.stat span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.74);}
.cta-band{
  margin-top:26px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(184,240,60,.18) 0%,rgba(47,211,160,.18) 100%);
  border:1px solid rgba(47,211,160,.30);border-radius:var(--r-lg);padding:28px 32px;
}
.cta-band h3{font-size:22px;font-weight:700;}
.cta-band p{margin-top:8px;color:var(--t600);font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(255,255,255,.78);
  padding:64px 0 26px;margin-top:80px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad-a);opacity:.5;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:420px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);display:inline-block;min-height:32px;}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:10px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.mobile-cta{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .faq-wrap{grid-template-columns:minmax(0,1fr) 270px;}
}
@media (max-width:1024px){
  .container,.container-wide{padding:0 20px;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--ink-900);flex-direction:column;align-items:stretch;
    gap:6px;padding:92px 22px 32px;margin-left:0;
    transform:translateX(105%);transition:transform .28s ease;
    box-shadow:-18px 0 44px rgba(0,0,0,.42);overflow-y:auto;
  }
  .site-header.is-open .main-nav{transform:translateX(0);}
  .nav-link{min-height:48px;font-size:15.5px;color:rgba(255,255,255,.86);}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(184,240,60,.14);color:#fff;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .hero{padding:140px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-sub{max-width:100%;}
  .faq-wrap{grid-template-columns:1fr;}
  .faq-aside{position:static;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .mobile-cta{
    display:inline-flex;position:fixed;right:16px;bottom:16px;z-index:90;
    align-items:center;gap:8px;
  }
}
@media (max-width:560px){
  body{font-size:16px;}
  .container,.container-wide{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .brand-text em{display:none;}
  .hero{padding:126px 0 52px;}
  .hero h1{font-size:clamp(26px,7.4vw,32px);}
  .hero-cta .btn{width:100%;}
  .hero-stats{margin-top:26px;}
  .badge{padding:8px 13px;font-size:12.5px;}
  .grid-3,.grid-2,.matrix{grid-template-columns:1fr;}
  .faq-tools{padding:18px;}
  .faq-q{padding:16px 16px;gap:10px;}
  .faq-text{font-size:16px;}
  .faq-a p{padding:0 16px 18px 16px;}
  .faq-cat{margin-left:16px;}
  .faq-index{margin-top:4px;}
  .stats-band{grid-template-columns:1fr 1fr;padding:24px 20px;gap:18px;}
  .cta-band{padding:24px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .crumbs ol{font-size:12.5px;}
}