/* roulang page: index */
:root{
  --c-bg:#0B0D18;
  --c-bg2:#101326;
  --c-bg3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --t-main:#E9EEF8;
  --t-sub:#A6B0C6;
  --t-weak:#6B7590;
  --t-body:#C8D1E2;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  --glass-border:1px solid rgba(255,255,255,.10);
  --r-lg:18px;
  --r-sm:14px;
  --r-input:12px;
  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --sh-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --sh-btn:0 0 0 1px rgba(43,227,200,.30),0 10px 30px -10px rgba(43,227,200,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --tr:200ms var(--ease);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--c-bg);color:var(--t-body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:0;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr),border-color var(--tr),opacity var(--tr);}
a:hover{color:#63F0DA;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--t-main);font-weight:700;}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- container ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;scroll-margin-top:88px;}
.section--alt{background:linear-gradient(160deg,var(--c-bg2),rgba(8,10,18,.9));}
.section--deep{background:var(--c-bg3);}
.section-head{max-width:760px;margin-bottom:var(--sp-5);}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--c-primary);padding:6px 14px;border-radius:999px;border:1px solid rgba(43,227,200,.28);
  background:rgba(43,227,200,.06);margin-bottom:16px;
}
.section-head h2{font-size:clamp(23px,2.5vw,34px);font-weight:700;line-height:1.3;margin-bottom:12px;}
.section-head p{font-size:14px;line-height:1.7;color:var(--t-sub);margin:0;max-width:680px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap;}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(43,227,200,.35),transparent);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(11,13,24,.72);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;transition:border-color var(--tr),background var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(9,11,20,.9);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t-main);font-weight:800;font-size:17px;line-height:1.2;flex-shrink:0;}
.logo:hover{color:var(--t-main);}
.logo-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(43,227,200,.28),rgba(122,92,255,.28));
  border:1px solid rgba(43,227,200,.4);box-shadow:0 0 18px -6px rgba(43,227,200,.7);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;}
.logo-text small{font-size:11px;font-weight:600;color:var(--t-weak);letter-spacing:.02em;}
.nav-menu{display:flex;align-items:center;gap:6px;flex-wrap:nowrap;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:10px;
  color:var(--t-sub);font-size:14px;font-weight:600;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(43,227,200,0));transform:scaleX(0);transform-origin:left;
  transition:transform var(--tr);
}
.nav-menu a:hover{color:var(--t-main);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-primary);}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 8px rgba(255,159,69,.9);flex:0 0 6px;}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 8px rgba(122,92,255,.9);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);color:var(--t-main);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  font-size:15px;font-weight:700;line-height:1;border:0;text-align:center;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr),border-color var(--tr),filter var(--tr);
}
.btn-primary{
  padding:15px 28px;border-radius:999px;color:#06120F;
  background:linear-gradient(160deg,#3BF0D5,#20CDB4);
  box-shadow:var(--sh-btn);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:#06120F;
  box-shadow:0 0 0 1px rgba(43,227,200,.45),0 16px 36px -12px rgba(43,227,200,.75);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  padding:14px 24px;border-radius:12px;color:var(--t-main);background:transparent;
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(43,227,200,.6);}
.btn-sm{padding:12px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-accent{
  padding:14px 24px;border-radius:12px;color:var(--c-accent);background:rgba(255,159,69,.07);
  border:1px solid rgba(255,159,69,.4);
}
.btn-accent:hover{color:#FFC188;border-color:rgba(255,159,69,.7);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link svg{width:14px;height:14px;transition:transform var(--tr);}
.text-link:hover svg{transform:translateX(3px);}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,12,.65);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
  background:linear-gradient(160deg,rgba(18,21,38,.96),rgba(9,11,20,.98));
  border-left:1px solid var(--line);backdrop-filter:blur(16px);
  transform:translateX(100%);transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--t-main);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;color:var(--t-sub);font-size:15px;font-weight:600;
  border:1px solid transparent;display:flex;align-items:center;gap:10px;
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--c-primary);background:rgba(43,227,200,.06);border-color:rgba(43,227,200,.22);}
.drawer-label{font-size:12px;font-weight:700;color:var(--t-weak);margin:24px 0 10px;letter-spacing:.04em;}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:80px 0 96px;overflow:hidden;
  background:radial-gradient(900px 520px at 12% -10%,rgba(43,227,200,.12),transparent 70%),
             radial-gradient(760px 520px at 92% 8%,rgba(122,92,255,.14),transparent 72%),
             var(--c-bg);
  scroll-margin-top:88px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  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;
  mask-image:radial-gradient(circle at 50% 20%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 30%,transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);
  border:1px solid rgba(43,227,200,.3);background:rgba(43,227,200,.06);border-radius:999px;padding:7px 15px;margin-bottom:22px;
}
.hero-badge .nav-dot{background:var(--c-primary);box-shadow:0 0 8px rgba(43,227,200,.9);}
.hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.22;margin-bottom:20px;}
.hero h1 .hl{color:var(--c-primary);}
.hero-sub{font-size:17px;line-height:1.75;color:var(--t-sub);max-width:560px;margin-bottom:32px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px;}
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding-top:28px;border-top:1px solid var(--line);}
.metric-num{font-size:24px;font-weight:800;color:var(--c-accent);line-height:1.2;}
.metric-label{font-size:13px;color:var(--t-weak);margin-top:6px;}
.hero-visual{position:relative;}
.hero-visual-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);
  box-shadow:var(--sh-card);aspect-ratio:4/3;
}
.hero-visual-frame img{width:100%;height:100%;object-fit:cover;}
.hero-visual-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(11,13,24,.35),rgba(11,13,24,.85));
}
.hero-glass{
  position:absolute;left:20px;right:20px;bottom:20px;border-radius:var(--r-sm);padding:16px 18px;
  background:var(--glass);border:var(--glass-border);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);
}
.hero-glass strong{display:block;color:var(--t-main);font-size:15px;margin-bottom:4px;}
.hero-glass span{font-size:13px;color:var(--t-sub);}
.hero-top-card{
  position:absolute;top:-18px;right:-12px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--glass);border:var(--glass-border);backdrop-filter:blur(14px);
  font-size:13px;color:var(--c-primary);font-weight:700;box-shadow:var(--sh-card);
}

/* ---------- cards ---------- */
.card{
  position:relative;border-radius:var(--r-lg);padding:24px;
  background:var(--glass);border:var(--glass-border);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(43,227,200,.3);}
.card--glow::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:linear-gradient(90deg,rgba(43,227,200,.45),rgba(43,227,200,0) 70%);
}
.card h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.card p{font-size:14px;line-height:1.7;color:var(--t-sub);}

/* feature asymmetric */
.feature-grid{display:grid;grid-template-columns:1.15fr .85fr;grid-template-rows:auto auto;gap:24px;}
.feature-main{
  grid-row:span 2;padding:32px;border-radius:var(--r-lg);
  background:var(--glass);border:var(--glass-border);box-shadow:var(--sh-card);backdrop-filter:blur(14px);
  position:relative;overflow:hidden;
}
.feature-main::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.5),rgba(43,227,200,0));
}
.feature-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);border:1px solid var(--glass-border);margin-bottom:22px;}
.feature-main h3{font-size:22px;}
.feature-main p{font-size:15px;}
.feature-list{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
.feature-list li{display:flex;gap:10px;font-size:14px;color:var(--t-sub);line-height:1.7;}
.feature-list li svg{width:16px;height:16px;flex:0 0 16px;margin-top:6px;color:var(--c-primary);}
.feature-side{
  border-radius:var(--r-lg);padding:24px;background:var(--glass);border:var(--glass-border);
  box-shadow:var(--sh-card);transition:transform var(--tr),border-color var(--tr);
}
.feature-side:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3);}
.feature-side .idx{
  font-size:13px;font-weight:800;color:var(--c-accent);letter-spacing:.06em;margin-bottom:10px;display:block;
}
.feature-side h3{font-size:19px;margin-bottom:8px;}

/* steps */
.steps{position:relative;padding-left:36px;}
.steps::before{
  content:"";position:absolute;left:13px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(43,227,200,.6),rgba(122,92,255,.15));
}
.step{position:relative;padding-bottom:28px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:-36px;top:2px;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:var(--c-primary);
  background:rgba(16,19,38,.9);border:1px solid rgba(43,227,200,.5);box-shadow:0 0 16px -6px rgba(43,227,200,.8);
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:15px;color:var(--t-sub);}

/* demo split */
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.demo-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);box-shadow:var(--sh-card);aspect-ratio:16/11;}
.demo-media img{width:100%;height:100%;object-fit:cover;}
.demo-media::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(11,13,24,.1),rgba(11,13,24,.7));}
.demo-tag{
  position:absolute;left:16px;top:16px;z-index:2;font-size:12px;font-weight:700;padding:6px 13px;border-radius:999px;
  color:var(--c-primary);background:rgba(11,13,24,.75);border:1px solid rgba(43,227,200,.4);
}
.tab-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px;}
.tab-row span{
  font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;color:var(--t-sub);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tab-row span.on{color:var(--c-primary);border-color:rgba(43,227,200,.45);background:rgba(43,227,200,.08);}

/* proof */
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start;}
.proof-card{padding:26px;border-radius:var(--r-lg);background:var(--glass);border:var(--glass-border);box-shadow:var(--sh-card);backdrop-filter:blur(14px);}
.proof-card:nth-child(2){margin-top:32px;}
.proof-card:nth-child(3){margin-top:16px;}
.proof-num{font-size:34px;font-weight:800;color:var(--c-accent);line-height:1.1;}
.proof-num small{font-size:15px;color:var(--t-weak);font-weight:600;margin-left:4px;}
.proof-card h3{font-size:18px;margin:12px 0 8px;}
.bar{height:4px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:16px;}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),rgba(122,92,255,.8));}
.quote-card{
  margin-top:24px;padding:26px;border-radius:var(--r-lg);border:1px solid rgba(43,227,200,.24);
  background:linear-gradient(160deg,rgba(43,227,200,.07),rgba(255,255,255,.02));
}
.quote-card blockquote{margin:0;font-size:16px;line-height:1.8;color:var(--t-body);font-style:italic;}
.quote-card cite{display:block;margin-top:14px;font-size:13px;color:var(--t-weak);font-style:normal;}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:center;}
.price-card{padding:28px;border-radius:var(--r-lg);background:var(--glass);border:var(--glass-border);box-shadow:var(--sh-card);transition:transform var(--tr),border-color var(--tr);}
.price-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3);}
.price-card.featured{
  padding:36px 28px;border-color:rgba(43,227,200,.45);
  background:linear-gradient(160deg,rgba(43,227,200,.10),rgba(255,255,255,.02));
  box-shadow:0 30px 60px -26px rgba(43,227,200,.35);
}
.price-card.featured::before{
  content:"";display:block;height:1px;margin:-28px -28px 22px;border-radius:var(--r-lg) var(--r-lg) 0 0;
  background:linear-gradient(90deg,rgba(43,227,200,.6),rgba(43,227,200,0));
}
.price-tag{font-size:34px;font-weight:800;color:var(--c-accent);line-height:1.1;margin:14px 0 6px;}
.price-tag span{font-size:14px;color:var(--t-weak);font-weight:600;margin-left:6px;}
.price-card h3{font-size:20px;}
.price-card ul{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px;}
.price-card li{display:flex;gap:10px;font-size:14px;color:var(--t-sub);}
.price-card li svg{width:15px;height:15px;flex:0 0 15px;margin-top:6px;color:var(--c-primary);}
.badge-new{
  position:absolute;top:-12px;right:20px;font-size:12px;font-weight:700;color:#06120F;
  background:var(--c-accent);border-radius:999px;padding:5px 12px;
}
.price-card.featured{position:relative;}
.badge-pill{
  display:inline-block;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  color:var(--c-primary);background:rgba(43,227,200,.07);border:1px solid rgba(43,227,200,.28);
}
.badge-pill--accent{color:var(--c-accent);background:rgba(255,159,69,.07);border-color:rgba(255,159,69,.3);}

/* news (CMS) */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.news-item{
  display:block;padding:20px;border-radius:var(--r-sm);background:var(--glass);border:var(--glass-border);
  box-shadow:var(--sh-card);transition:transform var(--tr),border-color var(--tr);
}
.news-item:hover{transform:translateX(4px);border-color:rgba(43,227,200,.3);}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}
.news-meta time{font-size:13px;color:var(--t-weak);}
.news-item h3{font-size:17px;color:var(--t-main);margin-bottom:8px;line-height:1.5;}
.news-item p{font-size:14px;color:var(--t-sub);line-height:1.7;margin:0 0 12px;}
.empty-state{
  text-align:center;padding:48px 24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px dashed var(--line-strong);
}
.empty-state svg{width:48px;height:48px;color:var(--t-weak);margin:0 auto 16px;}
.empty-state p{color:var(--t-sub);margin-bottom:20px;}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  position:relative;border-radius:var(--r-sm);background:var(--glass);border:var(--glass-border);
  box-shadow:var(--sh-card);overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(122,92,255,.5));
  opacity:0;transition:opacity var(--tr);
}
.faq-item.is-open{border-color:rgba(43,227,200,.4);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--t-main);font-size:19px;font-weight:600;line-height:1.45;
}
.faq-q .sign{
  flex:0 0 24px;width:24px;height:24px;position:relative;border-radius:50%;
  border:1px solid rgba(43,227,200,.45);transition:transform var(--tr);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;left:50%;top:50%;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:10px;height:1.5px;}
.faq-q .sign::after{width:1.5px;height:10px;transition:opacity var(--tr);}
.faq-item.is-open .sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--t-sub);}

/* cta band */
.cta-band{
  position:relative;border-radius:var(--r-lg);padding:40px;overflow:hidden;
  border:1px solid rgba(43,227,200,.28);
  background:linear-gradient(160deg,rgba(43,227,200,.10),rgba(122,92,255,.08),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.3vw,30px);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--t-sub);margin:0;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* floating cta */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:55;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr);
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta a{
  display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:999px;
  color:#06120F;font-weight:700;font-size:14px;
  background:linear-gradient(160deg,#3BF0D5,#20CDB4);box-shadow:var(--sh-btn);
}
.float-cta a:hover{color:#06120F;transform:translateY(-2px);}

/* footer */
.site-footer{background:#0A0C16;border-top:1px solid var(--line);padding:64px 0 0;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,200,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand p{font-size:14px;color:var(--t-sub);line-height:1.75;margin:16px 0 0;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t-main);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--t-sub);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14px;color:var(--t-sub);line-height:1.75;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 calc(22px + env(safe-area-inset-bottom));
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--t-weak);margin:0;}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom nav a{font-size:13px;color:var(--t-weak);}
.footer-bottom nav a:hover{color:var(--c-primary);}

/* responsive */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-primary{display:none;}
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .hero-visual-frame{aspect-ratio:16/9;}
  .section{padding:72px 0;}
  .feature-grid{grid-template-columns:1fr;grid-template-rows:none;}
  .feature-main{grid-row:auto;}
  .demo-grid{grid-template-columns:1fr;gap:32px;}
  .proof-grid{grid-template-columns:1fr 1fr;}
  .proof-card:nth-child(2),.proof-card:nth-child(3){margin-top:0;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{padding:32px 26px;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:44px 0 56px;}
  .hero-sub{font-size:16px;margin-bottom:26px;}
  .hero-btns{flex-direction:column;align-items:stretch;}
  .hero-btns .btn{width:100%;}
  .metrics{grid-template-columns:1fr 1fr;gap:16px;}
  .hero-visual-frame{aspect-ratio:auto;height:220px;}
  .hero-top-card{display:none;}
  .hero-glass{padding:14px;left:14px;right:14px;bottom:14px;}
  .proof-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:17px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .float-cta{
    left:0;right:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:linear-gradient(180deg,rgba(8,10,18,0),rgba(8,10,18,.94) 40%);
    transform:translateY(24px);
  }
  .float-cta.is-show{transform:translateY(0);}
  .float-cta a{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
  .footer-brand{grid-column:span 2;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head--row{align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}
@media print{
  body{background:#fff;color:#000;}
  .site-header,.float-cta,.cta-band,.drawer,.drawer-mask{display:none;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --c-bg:#0B0D18;
  --c-bg-2:#101326;
  --c-bg-3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text-2:#A6B0C6;
  --c-text-3:#6B7590;
  --c-body:#C8D1E2;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.14);
  --c-invert:#06120F;
  --c-ok:#3ED598;
  --c-warn:#FFC24B;
  --c-err:#FF6B6B;

  --grad-card:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  --grad-line:linear-gradient(90deg,var(--c-primary) 0%,rgba(43,227,200,0) 100%);
  --grad-top:linear-gradient(90deg,rgba(43,227,200,.55),rgba(43,227,200,0));
  --grad-violet:linear-gradient(90deg,rgba(122,92,255,.9),rgba(122,92,255,0));

  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;

  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --sh-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --sh-glow:0 0 0 1px rgba(43,227,200,.30),0 10px 30px -10px rgba(43,227,200,.55);

  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;

  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;

  --nav-h:72px;
  --container:1200px;
}

/* ============ reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
a:hover{color:#66f0dc;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(43,227,200,.28);color:#fff;}

/* ============ 容器与栅格补丁 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.grid-container{max-width:var(--container);}
.xy-grid{margin:0;}
.xy-grid>.cell{padding:0;}
.row-24{display:grid;gap:24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,24,.82);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(11,13,24,.90);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--c-line);
}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);flex-shrink:0;}
.logo:hover{color:var(--c-text);}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(43,227,200,.20),rgba(122,92,255,.16));
  border:1px solid rgba(43,227,200,.35);
  box-shadow:0 0 18px -6px rgba(43,227,200,.5);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text span{font-size:16px;font-weight:800;letter-spacing:0;color:var(--c-text);}
.logo-text small{font-size:11px;font-weight:600;color:var(--c-primary);letter-spacing:.02em;}

.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;
  color:var(--c-text-2);
  font-size:14.5px;
  font-weight:600;
  padding:6px 0;
  display:inline-flex;align-items:center;gap:6px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-line);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-text);}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(43,227,200,.9);}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 8px rgba(122,92,255,.9);}

.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--grad-card);border:1px solid var(--c-line-strong);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.mobile-drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(6,8,16,.72);backdrop-filter:blur(4px);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:linear-gradient(160deg,rgba(20,24,44,.98),rgba(10,12,24,.98));
  border-left:1px solid var(--c-line-strong);
  padding:24px 20px calc(24px + env(safe-area-inset-bottom));
  overflow-y:auto;
  box-shadow:-24px 0 60px -30px rgba(0,0,0,.9);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;background:var(--grad-card);
  border:1px solid var(--c-line-strong);color:var(--c-text);font-size:20px;line-height:1;
}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-links a{
  color:var(--c-text-2);font-size:15px;font-weight:600;padding:12px 12px;border-radius:12px;
  display:flex;align-items:center;gap:8px;
}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:var(--c-text);}
.drawer-links a.active{color:var(--c-primary);background:rgba(43,227,200,.08);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;line-height:1;
  padding:15px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),filter var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);color:var(--c-invert);
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:var(--c-invert);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;color:var(--c-text);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn-sm{padding:12px 20px;font-size:14px;min-height:44px;}
.btn-block{width:100%;}

/* ============ 页头横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;
  padding:64px 0 56px;
  background:#0C0F1E;
  border-bottom:1px solid var(--c-line);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 300px at 18% 20%,rgba(43,227,200,.16),transparent 70%),
    radial-gradient(500px 280px at 82% 90%,rgba(122,92,255,.16),transparent 70%),
    linear-gradient(180deg,rgba(8,10,18,.72),rgba(11,13,24,.96));
}
.page-banner .container{position:relative;z-index:2;}

.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 20px;font-size:13px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;color:var(--c-text-2);}
.breadcrumb li+li::before{content:"/";color:var(--c-text-3);}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .is-current{color:var(--c-text-3);max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--grad-card);border:1px solid var(--c-line-strong);
  color:var(--c-primary);backdrop-filter:blur(10px);
}
.badge--accent{color:var(--c-accent);border-color:rgba(255,159,69,.30);}
.badge--violet{color:#B9A8FF;border-color:rgba(122,92,255,.32);}

.article-head{margin-top:20px;max-width:900px;}
h1.article-title{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;line-height:1.24;color:#fff;letter-spacing:0;
  margin-bottom:20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  font-size:13.5px;color:var(--c-text-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta svg{width:15px;height:15px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.article-meta time{color:var(--c-text-2);font-variant-numeric:tabular-nums;}

/* ============ 文章主体布局 ============ */
.article-section{padding:56px 0 88px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;}

.panel{
  background:var(--grad-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  padding:28px;
}

/* ============ 正文排版 ============ */
.article-body{
  max-width:820px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-body);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.2vw,27px);
  font-weight:700;line-height:1.35;color:var(--c-text);
  margin:40px 0 16px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--c-primary),rgba(43,227,200,.15));
}
.article-body h3{
  font-size:19px;font-weight:600;line-height:1.45;color:var(--c-text);
  margin:32px 0 12px;
}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--c-text);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body li{margin-bottom:8px;line-height:1.8;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-accent);font-weight:700;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(43,227,200,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body strong{color:#fff;font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:var(--grad-card);
  color:var(--c-text-2);font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-md);
  border:1px solid var(--c-line-strong);
  margin:24px auto;
}
.article-body figcaption{
  font-size:13px;color:var(--c-text-3);text-align:center;margin-top:-10px;margin-bottom:24px;
}
.article-body hr{border:0;height:1px;background:var(--grad-line);margin:36px 0;opacity:.6;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;
  font-size:15px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--c-line);
}
.article-body thead th{
  background:rgba(255,255,255,.06);
  color:var(--c-text);font-weight:700;text-align:left;
  padding:13px 16px;border-bottom:1px solid var(--c-line-strong);
}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line);color:var(--c-body);}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body code{
  background:rgba(43,227,200,.10);color:var(--c-primary);
  padding:2px 7px;border-radius:6px;font-size:14px;
}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:calc(var(--nav-h) + 20px);display:grid;gap:20px;}
.side-card{
  background:var(--grad-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  padding:22px;position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-top);
}
.side-card h3{font-size:16px;font-weight:700;color:var(--c-text);margin-bottom:14px;}
.side-list{list-style:none;display:grid;gap:10px;}
.side-list a{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:var(--c-text-2);line-height:1.6;
}
.side-list a::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--c-violet);flex-shrink:0;
}
.side-list a:hover{color:var(--c-primary);}
.side-note{font-size:13.5px;line-height:1.75;color:var(--c-text-3);}
.side-note strong{color:var(--c-accent);font-weight:700;}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--grad-card);border:1px dashed var(--c-line-strong);
  border-radius:var(--r-lg);
}
.empty-state svg{
  width:48px;height:48px;margin:0 auto 16px;stroke:var(--c-text-3);fill:none;stroke-width:1.4;
}
.empty-state h3{font-size:19px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
.empty-state p{font-size:14.5px;color:var(--c-text-3);margin-bottom:22px;}

/* ============ 相关推荐 ============ */
.related-section{padding:0 0 88px;}
.section-head{margin-bottom:28px;}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--c-text);line-height:1.3;
}
.section-head p{font-size:14px;color:var(--c-text-3);margin-top:10px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  background:var(--grad-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(43,227,200,.30);}
.related-thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--c-line);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.related-body h3{font-size:17.5px;font-weight:600;line-height:1.45;color:var(--c-text);}
.related-body p{font-size:14px;color:var(--c-text-3);line-height:1.7;}
.related-more{margin-top:auto;font-size:14px;font-weight:700;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}

.back-row{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.back-row .hint{font-size:13.5px;color:var(--c-text-3);}

/* ============ 底部 CTA ============ */
.cta-band{padding:0 0 88px;}
.cta-box{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  padding:40px;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line-strong);
  background:linear-gradient(160deg,rgba(43,227,200,.10),rgba(122,92,255,.08) 55%,rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
}
.cta-box::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-top);
}
.cta-box h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;color:#fff;line-height:1.32;margin-bottom:10px;}
.cta-box p{font-size:14.5px;color:var(--c-text-2);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-pill);
  background:var(--c-primary);color:var(--c-invert);
  font-size:14.5px;font-weight:800;
  box-shadow:var(--sh-glow);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:var(--c-invert);filter:brightness(1.08);transform:translateY(-2px);}
.float-cta svg{width:16px;height:16px;stroke:var(--c-invert);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0A0C16;
  border-top:1px solid transparent;
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-top);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--c-text-3);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;letter-spacing:0;letter-spacing:.02em;}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col ul a{font-size:13.5px;color:var(--c-text-2);}
.footer-col ul a:hover{color:var(--c-primary);}
.footer-col p{font-size:13.5px;color:var(--c-text-3);line-height:1.8;}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:22px 0 calc(22px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:var(--c-text-3);}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom nav a{font-size:13px;color:var(--c-text-3);}
.footer-bottom nav a:hover{color:var(--c-primary);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-banner{padding:48px 0 44px;}
  .article-section{padding:44px 0 64px;}
  .related-section,.cta-band{padding-bottom:64px;}
}
@media (max-width:767px){
  .cta-box{grid-template-columns:minmax(0,1fr);padding:28px;}
  .cta-actions .btn{flex:1;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;
    justify-content:center;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta:hover{transform:none;}
  body{padding-bottom:0;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .article-body{font-size:15.5px;}
  .article-body h2{padding-left:14px;margin-top:32px;}
  .panel{padding:20px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .breadcrumb .is-current{max-width:200px;}
  .article-section{padding:32px 0 48px;}
  .related-section,.cta-band{padding-bottom:48px;}
  .article-meta{gap:8px 16px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}
@media print{
  .site-header,.float-cta,.site-footer,.article-side,.cta-band{display:none !important;}
  body{background:#fff;color:#111;}
  .article-body a{color:#111;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --c-bg:#0B0D18;
  --c-bg-2:#101326;
  --c-bg-3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text-2:#A6B0C6;
  --c-text-3:#6B7590;
  --c-body:#C8D1E2;
  --c-line:rgba(255,255,255,.08);
  --c-border:rgba(255,255,255,.10);
  --c-invert:#06120F;
  --c-ok:#3ED598;
  --c-warn:#FFC24B;
  --c-err:#FF6B6B;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --sh-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --sh-glow:0 0 0 1px rgba(43,227,200,.30),0 10px 30px -10px rgba(43,227,200,.55);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --max:1200px;
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);}
a:hover{color:#7cf3e0;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{color:var(--c-text);margin:0;font-weight:700;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
svg{display:block;}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
[id]{scroll-margin-top:88px;}

/* ===== 区块节奏 ===== */
.section{padding:96px 0;position:relative;}
.section--alt{background:var(--c-bg-2);}
.section--deep{background:var(--c-bg-3);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(23px,2.5vw,34px);
  line-height:1.3;
  font-weight:700;
  color:var(--c-text);
}
.section-head h2 em{font-style:normal;color:var(--c-primary);}
.section-head p{
  margin-top:12px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-3);
}
.divider{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,transparent,rgba(43,227,200,.45),transparent);
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(11,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:rgba(11,13,24,.86);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  width:100%;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  font-weight:700;
  flex-shrink:0;
}
.logo:hover{color:var(--c-text);}
.logo-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--glass);
  border:1px solid var(--c-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text span{font-size:15px;font-weight:800;letter-spacing:0;}
.logo-text small{font-size:11px;color:var(--c-text-3);font-weight:600;letter-spacing:.02em;}

.nav-menu{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  color:var(--c-text-2);
  font-size:14px;
  font-weight:600;
  padding:6px 2px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(43,227,200,0));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-primary);}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 0 3px rgba(43,227,200,.16);
}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 0 3px rgba(122,92,255,.18);}

.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  font-weight:700;
  font-size:15px;
  text-align:center;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
}
.btn-primary{
  background:var(--c-primary);
  color:var(--c-invert);
  border-radius:var(--r-pill);
  padding:13px 26px;
  min-height:44px;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{
  color:var(--c-invert);
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(43,227,200,.40),0 16px 36px -12px rgba(43,227,200,.7);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--c-text);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-sm);
  padding:11px 20px;
  min-height:44px;
}
.btn-ghost:hover{
  color:var(--c-primary);
  border-color:var(--c-primary);
  transform:translateY(-2px);
}
.btn-accent-line{
  background:transparent;
  color:var(--c-accent);
  border:1px solid rgba(255,159,69,.45);
  border-radius:var(--r-pill);
  padding:12px 24px;
  min-height:44px;
}
.btn-accent-line:hover{color:var(--c-accent);border-color:var(--c-accent);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--c-border);
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--c-text);
  border-radius:2px;
  position:relative;
  transition:background var(--t);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;border-radius:2px;background:var(--c-text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,86vw);
  height:100%;
  z-index:70;
  background:rgba(10,12,22,.96);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--c-border);
  padding:24px 20px calc(28px + env(safe-area-inset-bottom));
  transform:translateX(105%);
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;
  background:var(--glass);border:1px solid var(--c-border);
  color:var(--c-text);font-size:18px;line-height:1;
  display:grid;place-items:center;
}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  color:var(--c-text-2);
  font-size:15px;font-weight:600;
  padding:12px 12px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
}
.drawer nav a:hover,.drawer nav a.active{
  color:var(--c-primary);
  background:var(--glass);
  border-color:var(--c-border);
}
.drawer .btn{width:100%;margin-top:20px;}
.drawer-mask{
  position:fixed;inset:0;z-index:65;
  background:rgba(4,6,12,.6);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ===== 页头横幅 ===== */
.page-banner{
  position:relative;
  padding:64px 0 56px;
  min-height:260px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background-color:var(--c-bg-3);
  background-image:linear-gradient(160deg,rgba(8,10,18,.82),rgba(11,13,24,.74)),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-banner::after{
  content:"";
  position:absolute;
  right:-120px;top:-100px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,200,.14),transparent 68%);
  filter:blur(60px);
  pointer-events:none;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:20px;
}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(255,255,255,.20);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .current{color:var(--c-text-3);}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--c-border);
  color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  margin-bottom:18px;
}
.page-banner h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.22;
  font-weight:800;
  color:#fff;
  max-width:900px;
}
.page-banner h1 em{font-style:normal;color:var(--c-primary);}
.banner-lead{
  margin-top:18px;
  max-width:680px;
  font-size:16px;
  color:var(--c-text-2);
}
.banner-meta{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  font-size:13px;
  color:var(--c-text-3);
}
.banner-meta strong{
  display:block;
  color:var(--c-accent);
  font-size:20px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}

/* ===== 卡片 ===== */
.card{
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  padding:24px;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-hover);
  border-color:rgba(43,227,200,.30);
}
.card--hl{position:relative;overflow:hidden;}
.card--hl::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.55),rgba(43,227,200,0));
}
.card h3{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.card p{font-size:15px;color:var(--c-text-2);}
.card-icon{
  width:44px;height:44px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(122,92,255,.14);
  border:1px solid rgba(122,92,255,.28);
  margin-bottom:16px;
}
.card-icon svg{width:20px;height:20px;}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--glass);
  border:1px solid var(--c-border);
  color:var(--c-primary);
}
.badge--accent{color:var(--c-accent);border-color:rgba(255,159,69,.30);}

/* ===== 左右两栏 ===== */
.two-col{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.media-frame{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-card);
  aspect-ratio:16/10;
  background:var(--c-bg-3);
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms cubic-bezier(.2,.7,.3,1);
}
.media-frame:hover img{transform:scale(1.04);}
.media-frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(43,227,200,.08),transparent 55%);
  pointer-events:none;
}

/* ===== 步骤竖轴 ===== */
.steps{margin-top:32px;position:relative;}
.steps::before{
  content:"";
  position:absolute;
  left:13px;top:8px;bottom:8px;
  width:1px;
  background:linear-gradient(180deg,rgba(43,227,200,.65),rgba(43,227,200,.05));
}
.step{
  position:relative;
  padding-left:52px;
  padding-bottom:28px;
}
.step:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:0;top:0;
  width:28px;height:28px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;
  color:var(--c-primary);
  background:rgba(16,19,38,.92);
  border:1px solid rgba(43,227,200,.45);
  box-shadow:0 0 0 4px rgba(43,227,200,.06);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.step p{font-size:15px;color:var(--c-text-2);}

/* ===== 注意事项提示条 ===== */
.notice{
  margin-top:40px;
  display:flex;
  gap:16px;
  padding:20px 24px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--c-border);
  border-left:3px solid var(--c-accent);
  box-shadow:var(--sh-card);
}
.notice-icon{
  flex-shrink:0;
  width:36px;height:36px;
  border-radius:10px;
  display:grid;place-items:center;
  background:rgba(255,159,69,.14);
  border:1px solid rgba(255,159,69,.30);
}
.notice-icon svg{width:18px;height:18px;}
.notice h3{font-size:16px;font-weight:600;margin-bottom:4px;color:var(--c-text);}
.notice p{font-size:14px;color:var(--c-text-2);line-height:1.7;}

/* ===== 图文交替 ===== */
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  padding:28px 0;
  border-bottom:1px solid var(--c-line);
}
.alt-row:last-child{border-bottom:0;}
.alt-row:nth-child(even) .alt-media{order:2;}
.alt-row h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.alt-row p{font-size:15px;color:var(--c-text-2);}
.alt-points{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.alt-points li{
  display:flex;gap:10px;
  font-size:14px;color:var(--c-text-2);
}
.alt-points li::before{
  content:"";
  flex-shrink:0;
  width:6px;height:6px;margin-top:9px;
  border-radius:50%;
  background:var(--c-primary);
}

/* ===== 排查清单卡 ===== */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.check-card{
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.check-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.30);box-shadow:var(--sh-hover);}
.check-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.check-card p{font-size:14px;color:var(--c-text-2);}
.check-card .badge{margin-bottom:14px;}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  overflow:hidden;
  position:relative;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(43,227,200,.05));
  opacity:0;
  transition:opacity var(--t);
}
.faq-item.is-open{border-color:rgba(43,227,200,.40);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  color:var(--c-text);
  font-size:19px;
  font-weight:600;
  line-height:1.45;
}
.faq-q:hover{color:var(--c-primary);}
.faq-mark{
  flex-shrink:0;
  width:24px;height:24px;
  border-radius:50%;
  display:grid;place-items:center;
  color:var(--c-primary);
  border:1px solid rgba(43,227,200,.35);
  font-size:16px;
  line-height:1;
  margin-top:3px;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms cubic-bezier(.2,.7,.3,1);
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.8;
}

/* ===== 相关分类 ===== */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.related-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:16px 20px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--c-border);
  color:var(--c-text-2);
  font-size:14px;
  font-weight:600;
  box-shadow:var(--sh-card);
}
.related-link:hover{
  color:var(--c-primary);
  border-color:rgba(43,227,200,.40);
  transform:translateY(-3px);
}
.related-link svg{width:16px;height:16px;flex-shrink:0;}

/* ===== 底部 CTA ===== */
.cta-band{
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.6),rgba(122,92,255,.25),transparent);
}
.cta-band h2{font-size:clamp(21px,2.2vw,28px);line-height:1.35;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:60;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity 220ms cubic-bezier(.2,.7,.3,1),transform 220ms cubic-bezier(.2,.7,.3,1),visibility 220ms;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ===== 页脚 ===== */
.site-footer{
  background:#0A0C16;
  border-top:1px solid var(--c-line);
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,200,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--c-text-3);line-height:1.75;max-width:340px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-3);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14px;color:var(--c-text-3);line-height:1.75;}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:22px 0 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.footer-bottom p{font-size:13px;color:var(--c-text-3);}
.footer-bottom nav{display:flex;gap:20px;}
.footer-bottom nav a{font-size:13px;color:var(--c-text-3);}
.footer-bottom nav a:hover{color:var(--c-primary);}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .two-col{grid-template-columns:1fr;gap:32px;}
  .alt-row{grid-template-columns:1fr;gap:24px;}
  .alt-row:nth-child(even) .alt-media{order:0;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .page-banner{padding:40px 0 40px;min-height:180px;}
  .banner-lead{font-size:15px;}
  .banner-meta{gap:12px 24px;}
  .card{padding:18px;}
  .check-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .faq-q{font-size:17px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.5px;}
  .cta-band{padding:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .float-cta{
    left:16px;right:16px;bottom:0;
    padding-bottom:calc(env(safe-area-inset-bottom) + 12px);
    padding-top:12px;
    background:linear-gradient(180deg,rgba(11,13,24,0),rgba(11,13,24,.92) 40%);
  }
  .float-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:400px){
  .footer-grid{grid-template-columns:1fr;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}
@media print{
  body{background:#fff;color:#111;}
  .site-header,.float-cta,.drawer,.drawer-mask{display:none !important;}
  .card,.faq-item,.cta-band{border-color:#ccc;box-shadow:none;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-bg:#0B0D18;
  --c-bg2:#101326;
  --c-bg3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text2:#A6B0C6;
  --c-text3:#6B7590;
  --c-body:#C8D1E2;
  --c-line:rgba(255,255,255,.08);
  --c-border:rgba(255,255,255,.10);
  --c-on:#06120F;
  --c-ok:#3ED598;
  --c-warn:#FFC24B;
  --c-err:#FF6B6B;

  --glass:linear-gradient(160deg, rgba(255,255,255,.065), rgba(255,255,255,.02));
  --glass-strong:linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.028));

  --r-lg:18px;
  --r-sm:14px;
  --r-in:12px;
  --r-pill:999px;

  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --sh-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --sh-glow:0 0 0 1px rgba(43,227,200,.30), 0 10px 30px -10px rgba(43,227,200,.55);

  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
  --gap:24px;
  --sec-pad:96px;
}

/* ============ reset 与基础 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 420px at 12% 4%, rgba(43,227,200,.13), transparent 70%),
    radial-gradient(520px 420px at 92% 12%, rgba(122,92,255,.11), transparent 72%);
}
img{max-width:100%;display:block;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t) var(--ease),opacity var(--t) var(--ease);}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{color:var(--c-text);font-family:inherit;letter-spacing:0;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 容器与栅格 ============ */
.grid-container{
  max-width:1200px !important;
  padding-left:24px !important;
  padding-right:24px !important;
  position:relative;
  z-index:1;
}
.section{padding:var(--sec-pad) 0;position:relative;scroll-margin-top:88px;}
.section--alt{background:var(--c-bg2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section--deep{background:var(--c-bg3);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-primary),transparent);}
h2.sec-title{font-size:clamp(23px,2.5vw,34px);font-weight:700;line-height:1.3;margin-bottom:12px;}
.sec-sub{font-size:14px;line-height:1.7;color:var(--c-text3);}

/* ============ 按钮与徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:15px 26px;border-radius:var(--r-pill);border:1px solid transparent;
  cursor:pointer;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:var(--c-on);box-shadow:var(--sh-glow);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:var(--c-on);box-shadow:0 0 0 1px rgba(43,227,200,.4),0 16px 36px -12px rgba(43,227,200,.7);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--c-text);border-radius:var(--r-in);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:12px 22px;font-size:14px;min-height:44px;}
.btn-block{width:100%;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--glass);border:1px solid var(--c-border);
  color:var(--c-primary);backdrop-filter:blur(10px);
}
.badge--accent{color:var(--c-accent);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,24,.72);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);}
.logo:hover{color:var(--c-text);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(43,227,200,.20),rgba(122,92,255,.16));
  border:1px solid rgba(43,227,200,.32);
  box-shadow:0 0 20px -6px rgba(43,227,200,.6);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text span{font-size:16px;font-weight:800;color:var(--c-text);}
.logo-text small{font-size:11px;color:var(--c-text3);letter-spacing:.08em;}

.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:10px 12px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--c-text2);
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:linear-gradient(90deg,var(--c-primary),rgba(43,227,200,0));
  transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease);
}
.nav-menu a:hover{color:var(--c-text);background:rgba(255,255,255,.04);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-primary);background:rgba(43,227,200,.08);}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px rgba(43,227,200,.9);flex:0 0 6px;}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 10px rgba(122,92,255,.9);}

.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-border);
  background:var(--glass);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(6,8,16,.66);backdrop-filter:blur(3px);z-index:80;opacity:0;pointer-events:none;transition:opacity 220ms var(--ease);}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,340px);z-index:90;
  background:linear-gradient(160deg,rgba(16,19,38,.97),rgba(11,13,24,.99));
  border-left:1px solid var(--c-border);
  transform:translateX(102%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;padding:20px;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--c-border);background:var(--glass);color:var(--c-text);font-size:20px;line-height:1;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{display:block;padding:14px 14px;border-radius:12px;color:var(--c-text2);font-size:15px;font-weight:500;border:1px solid transparent;}
.drawer-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.04);}
.drawer-nav a.active{color:var(--c-primary);background:rgba(43,227,200,.08);border-color:rgba(43,227,200,.24);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-foot p{font-size:12.5px;color:var(--c-text3);line-height:1.7;}

/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:270px;display:flex;align-items:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(8,10,18,.92),rgba(11,13,24,.78) 55%,rgba(16,19,38,.9));
}
.page-hero .grid-container{position:relative;z-index:2;padding-top:46px;padding-bottom:46px;}
.breadcrumb{font-size:13px;color:var(--c-text3);margin-bottom:18px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--c-text3);}
.breadcrumb a{color:var(--c-text3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb [aria-current="page"]{color:var(--c-text3);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);font-weight:800;line-height:1.22;color:#fff;
  max-width:900px;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary);}
.page-hero-lead{margin-top:16px;font-size:15px;line-height:1.8;color:var(--c-text2);max-width:680px;}
.page-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* ============ 主卡墙（非对称） ============ */
.wall{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.wall .card--lead{grid-column:span 2;grid-row:span 2;}
.card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.55),rgba(43,227,200,0) 62%);
  opacity:0;transition:opacity var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.30);box-shadow:var(--sh-hover);}
.card:hover::before{opacity:1;}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--c-bg3);border-bottom:1px solid var(--c-line);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-tag{position:absolute;top:14px;left:14px;z-index:2;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;font-weight:600;line-height:1.45;color:var(--c-text);}
.card-body p{font-size:14.5px;line-height:1.75;color:var(--c-text2);}
.card--lead .card-media{aspect-ratio:16/9;}
.card--lead .card-body{padding:28px;gap:14px;}
.card--lead .card-body h3{font-size:23px;}
.card--lead .card-body p{font-size:15.5px;}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-text3);padding-top:6px;}
.card-meta .arrow{color:var(--c-primary);font-weight:700;}

/* ============ 图文交替 ============ */
.media-row{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  padding:28px 0;border-bottom:1px solid var(--c-line);
}
.media-row:last-child{border-bottom:0;}
.media-row--reverse .media-figure{order:2;}
.media-figure{
  border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--c-border);
  box-shadow:var(--sh-card);position:relative;aspect-ratio:16/10;background:var(--c-bg3);
}
.media-figure img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.media-row:hover .media-figure img{transform:scale(1.03);}
.media-body h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:12px;}
.media-body p{font-size:15px;line-height:1.8;color:var(--c-text2);margin-bottom:14px;}
.media-list{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.media-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-text2);line-height:1.7;}
.media-list li::before{content:"";flex:0 0 6px;width:6px;height:6px;margin-top:10px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(43,227,200,.8);}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;}
.step{position:relative;padding:0 16px 0 0;}
.step::after{
  content:"";position:absolute;top:17px;left:44px;right:8px;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.6),rgba(43,227,200,.06));
}
.step:last-child::after{display:none;}
.step-num{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--glass);border:1px solid rgba(43,227,200,.45);
  color:var(--c-primary);font-size:14px;font-weight:700;
  box-shadow:0 0 18px -6px rgba(43,227,200,.7);
  position:relative;z-index:2;
}
.step h3{font-size:17px;font-weight:600;margin:16px 0 8px;line-height:1.4;}
.step p{font-size:13.5px;line-height:1.7;color:var(--c-text3);}

/* ============ FAQ ============ */
.accordion.faq-acc{background:transparent;border:0;margin:0;}
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);
  position:relative;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.faq-acc .accordion-item::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(122,92,255,.6));
  opacity:0;transition:opacity var(--t) var(--ease);
}
.faq-acc .accordion-item.is-active{border-color:rgba(43,227,200,.36);box-shadow:var(--sh-hover);}
.faq-acc .accordion-item.is-active::after{opacity:1;}
.faq-acc .accordion-title{
  background:transparent;border:0;
  padding:22px 56px 22px 24px;
  font-size:19px;font-weight:600;line-height:1.45;color:var(--c-text);
  transition:color var(--t) var(--ease);
}
.faq-acc .accordion-title:hover{color:var(--c-primary);background:transparent;}
.faq-acc .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  color:var(--c-primary);font-size:22px;font-weight:400;line-height:1;
}
.faq-acc .accordion-item.is-active > .accordion-title::before{content:"–";}
.faq-acc .accordion-content{
  background:transparent;border:0;
  padding:0 24px 22px 24px;
  color:var(--c-text2);font-size:15px;line-height:1.8;
}
.faq-acc .accordion-content p{font-size:15px;line-height:1.8;color:var(--c-text2);}

/* ============ 相关分类互链 ============ */
.links-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;}
.link-chip{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--c-border);
  color:var(--c-text);font-size:14.5px;font-weight:500;
  backdrop-filter:blur(10px);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.link-chip:hover{transform:translateY(-3px);border-color:rgba(43,227,200,.45);color:var(--c-primary);box-shadow:var(--sh-card);}
.link-chip .chip-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px rgba(43,227,200,.9);}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 24px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--c-border);border-left:3px solid var(--c-accent);
  box-shadow:var(--sh-card);
}
.notice h3{font-size:16px;font-weight:600;color:var(--c-accent);margin-bottom:6px;}
.notice p{font-size:14.5px;line-height:1.75;color:var(--c-text2);}

/* ============ 末尾 CTA ============ */
.cta-band{
  background:var(--glass-strong);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.6),rgba(122,92,255,.28) 55%,rgba(255,255,255,0));
}
.cta-band h2{font-size:clamp(22px,2.3vw,30px);font-weight:700;line-height:1.35;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--c-text2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0A0C16;
  border-top:1px solid var(--c-line);
  padding:64px 0 0;
  position:relative;
  margin-top:96px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,0),rgba(43,227,200,.6) 45%,rgba(122,92,255,.4) 75%,rgba(43,227,200,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--c-text3);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text3);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--c-text3);}
.footer-bottom{
  margin-top:48px;padding:22px 0 26px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-text3);}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom nav a{font-size:13px;color:var(--c-text3);}
.footer-bottom nav a:hover{color:var(--c-primary);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-pill);
  background:var(--c-primary);color:var(--c-on);font-size:14px;font-weight:700;
  box-shadow:var(--sh-glow);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),filter var(--t) var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{color:var(--c-on);filter:brightness(1.08);transform:translateY(-2px);}

/* ============ 工具类 ============ */
.mt-24{margin-top:24px;}
.mt-32{margin-top:32px;}
.mt-40{margin-top:40px;}
.grid-gap-24{--gap:24px;}

/* ============ 响应式：1024 ============ */
@media (max-width:1023px){
  :root{--sec-pad:72px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .wall{grid-template-columns:repeat(2,1fr);}
  .wall .card--lead{grid-column:span 2;grid-row:auto;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .step::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .media-row{grid-template-columns:1fr;gap:24px;}
  .media-row--reverse .media-figure{order:0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px;}
}

/* ============ 响应式：640 ============ */
@media (max-width:640px){
  :root{--sec-pad:56px;--gap:16px;}
  body{font-size:15px;}
  .grid-container{padding-left:16px !important;padding-right:16px !important;}
  .header-inner{height:64px;gap:12px;}
  .logo-text span{font-size:14.5px;}
  .logo-text small{font-size:10px;}
  .header-actions .btn-sm{padding:11px 16px;font-size:13px;}
  .page-hero{min-height:200px;}
  .page-hero h1{font-size:clamp(26px,7.4vw,34px);}
  .page-hero-lead{font-size:14px;}
  .wall{grid-template-columns:1fr;}
  .wall .card--lead{grid-column:span 1;}
  .card-body{padding:18px;}
  .card--lead .card-body{padding:20px;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:span 2;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;justify-content:center;
    border-radius:0;padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
  .cta-band{padding:26px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .faq-acc .accordion-title{font-size:16.5px;padding:18px 48px 18px 18px;}
  .faq-acc .accordion-content{padding:0 18px 18px 18px;}
  .link-chip{padding:12px 18px;font-size:13.5px;}
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .float-cta{transition:none;}
}

/* ============ 打印 ============ */
@media print{
  body{background:#fff;color:#111;}
  body::before,.site-header,.float-cta,.drawer,.drawer-mask{display:none !important;}
  .card,.cta-band,.accordion-item{border-color:#ccc;box-shadow:none;}
}

/* roulang page: category3 */
:root{
  --c-bg:#0B0D18;
  --c-bg2:#101326;
  --c-bg3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text2:#C8D1E2;
  --c-text3:#A6B0C6;
  --c-text4:#6B7590;
  --c-line:rgba(255,255,255,.08);
  --c-line2:rgba(255,255,255,.16);
  --c-invert:#06120F;
  --c-ok:#3ED598;
  --c-warn:#FFC24B;
  --c-err:#FF6B6B;
  --glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  --r-lg:18px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --shadow-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --shadow-glow:0 0 0 1px rgba(43,227,200,.30),0 10px 30px -10px rgba(43,227,200,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --sp-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp-sec) 0;position:relative;scroll-margin-top:88px}
.section--alt{background:var(--c-bg2)}
.section--deep{background:var(--c-bg3)}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(43,227,200,.35),transparent);border:0;margin:0}

.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:clamp(23px,2.5vw,34px);line-height:1.3;font-weight:700}
.sec-head p{margin-top:12px;font-size:14px;line-height:1.7;color:var(--c-text3)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--c-primary);margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-primary);opacity:.7}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,24,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(43,227,200,.22),rgba(122,92,255,.18));
  border:1px solid rgba(43,227,200,.35);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text span{font-size:16px;font-weight:800;color:var(--c-text)}
.logo-text small{font-size:11px;color:var(--c-text4);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-menu a{
  position:relative;font-size:14px;font-weight:600;color:var(--c-text3);
  padding:6px 0;transition:color var(--dur) var(--ease);
  display:inline-flex;align-items:center;gap:6px;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--c-primary),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-menu a:hover{color:var(--c-text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--c-primary)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;box-shadow:0 0 8px rgba(43,227,200,.8)}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 8px rgba(122,92,255,.8)}
.header-actions{display:flex;align-items:center;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;font-weight:700;border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);color:var(--c-invert);
  border-radius:999px;padding:12px 26px;min-height:44px;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(43,227,200,.45),0 16px 36px -12px rgba(43,227,200,.65)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;color:var(--c-text);border:1px solid var(--c-line2);
  border-radius:12px;padding:11px 22px;min-height:44px;
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 20px;min-height:40px;font-size:13px}
.btn-block{width:100%}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--c-line);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:linear-gradient(160deg,rgba(16,19,38,.98),rgba(8,10,18,.99));
  border-left:1px solid var(--c-line);
  padding:24px 22px calc(24px + env(safe-area-inset-bottom));
  transform:translateX(102%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-title{font-size:14px;font-weight:700;color:var(--c-text3);letter-spacing:.04em}
.drawer-close{width:40px;height:40px;border-radius:12px;background:var(--glass);border:1px solid var(--c-line);color:var(--c-text);font-size:18px;display:flex;align-items:center;justify-content:center}
.drawer nav{display:flex;flex-direction:column;gap:4px}
.drawer nav a{
  padding:14px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--c-text2);
  border:1px solid transparent;transition:all var(--dur) var(--ease);
  display:flex;align-items:center;gap:8px;
}
.drawer nav a:hover,.drawer nav a.active{background:var(--glass);border-color:rgba(43,227,200,.3);color:var(--c-primary)}
.drawer-cta{margin-top:auto;padding-top:24px}
.scrim{position:fixed;inset:0;background:rgba(4,6,12,.66);backdrop-filter:blur(2px);z-index:70;opacity:0;pointer-events:none;transition:opacity 260ms var(--ease)}
.scrim.open{opacity:1;pointer-events:auto}

/* 页头横幅 */
.page-hero{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  padding:56px 0;
  background-image:linear-gradient(160deg,rgba(8,10,18,.82),rgba(11,13,24,.9)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 260px at 12% 20%,rgba(43,227,200,.14),transparent 70%),
             radial-gradient(360px 240px at 88% 80%,rgba(122,92,255,.12),transparent 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--c-text4);margin-bottom:16px}
.breadcrumb li{display:inline-flex;align-items:center;gap:6px}
.breadcrumb li+li::before{content:"/";color:var(--c-text4);opacity:.6}
.breadcrumb a{color:var(--c-text3);transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-text4)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);line-height:1.22;font-weight:800;max-width:900px;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary)}
.page-hero .lede{margin-top:16px;font-size:15px;line-height:1.8;color:var(--c-text3);max-width:680px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--c-line);color:var(--c-primary);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.badge--accent{color:var(--c-accent);border-color:rgba(255,159,69,.3)}
.badge--violet{color:var(--c-violet);border-color:rgba(122,92,255,.28)}

/* 通栏提示 */
.alert-band{
  border-top:1px solid rgba(255,194,75,.28);
  border-bottom:1px solid rgba(255,194,75,.28);
  background:linear-gradient(160deg,rgba(255,194,75,.10),rgba(255,159,69,.03));
}
.alert-inner{display:flex;align-items:flex-start;gap:14px;padding:18px 0}
.alert-icon{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,194,75,.14);border:1px solid rgba(255,194,75,.35);
}
.alert-inner strong{display:block;font-size:15px;color:var(--c-warn);font-weight:700;margin-bottom:2px}
.alert-inner p{font-size:14px;line-height:1.7;color:var(--c-text2)}

/* 卡片 */
.card{
  position:relative;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  padding:24px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3);box-shadow:var(--shadow-hover)}
.card--glow::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.4),rgba(122,92,255,.16),transparent);
  border-radius:var(--r-lg) var(--r-lg) 0 0;
}

/* 双栏对照 */
.compare-head{
  display:grid;grid-template-columns:1fr 56px 1fr;gap:16px;align-items:center;
  padding:0 4px 14px;
}
.compare-head span{font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--c-text4)}
.compare-head .h-left{color:var(--c-accent)}
.compare-head .h-right{color:var(--c-primary)}
.compare-list{display:flex;flex-direction:column;gap:12px}
.compare-row{
  display:grid;grid-template-columns:1fr 56px 1fr;gap:16px;align-items:stretch;
  background:var(--glass);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:18px 20px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),background var(--dur) var(--ease);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.compare-row:hover{border-color:rgba(43,227,200,.3);transform:translateY(-3px)}
.compare-q{display:flex;gap:12px;align-items:flex-start}
.compare-a{display:flex;gap:12px;align-items:flex-start}
.compare-q p,.compare-a p{font-size:14.5px;line-height:1.75}
.compare-q p{color:var(--c-text2)}
.compare-a p{color:var(--c-text)}
.compare-mark{
  flex-shrink:0;width:24px;height:24px;border-radius:8px;margin-top:3px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;
}
.mark-q{background:rgba(255,159,69,.14);border:1px solid rgba(255,159,69,.34);color:var(--c-accent)}
.mark-a{background:rgba(43,227,200,.14);border:1px solid rgba(43,227,200,.34);color:var(--c-primary)}
.compare-arrow{
  display:flex;align-items:center;justify-content:center;color:var(--c-text4);
}
.compare-arrow svg{width:20px;height:20px}

/* 检查清单 */
.check-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:32px;align-items:start}
.steps{position:relative;padding-left:8px}
.step{position:relative;display:flex;gap:18px;padding-bottom:28px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:13px;top:32px;bottom:0;width:1px;
  background:linear-gradient(180deg,rgba(43,227,200,.55),rgba(43,227,200,0));
}
.step:last-child::before{display:none}
.step-num{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--c-primary);
  background:var(--glass);border:1px solid rgba(43,227,200,.45);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.step-body h3{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:6px;color:var(--c-text)}
.step-body p{font-size:14.5px;line-height:1.8;color:var(--c-text3)}
.step-body .mini{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}

.side-visual{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-card)}
.side-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg)}
.side-note{margin-top:20px;padding:20px;border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--c-line)}
.side-note h4{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:8px}
.side-note p{font-size:14px;line-height:1.75;color:var(--c-text3)}

/* 处理顺序 */
.order-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.order-card{
  position:relative;padding:24px 22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--c-line);box-shadow:var(--shadow-card);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.order-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3)}
.order-card .num{
  font-size:30px;font-weight:800;color:var(--c-accent);line-height:1;
  margin-bottom:14px;letter-spacing:-.02em;
}
.order-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px}
.order-card p{font-size:14px;line-height:1.75;color:var(--c-text3)}
.order-card:nth-child(even){transform:translateY(20px)}
.order-card:nth-child(even):hover{transform:translateY(16px)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--glass);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-lg);
  overflow:hidden;position:relative;transition:border-color var(--dur) var(--ease);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(43,227,200,0));
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.faq-item.open{border-color:rgba(43,227,200,.35)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;color:var(--c-text);
  text-align:left;font-size:19px;font-weight:600;line-height:1.45;
}
.faq-q .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(43,227,200,.45);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  transition:transform var(--dur) var(--ease);
}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a p{padding:0 24px 22px;font-size:14.5px;line-height:1.85;color:var(--c-text3)}

/* 相关分类 */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.rel-link{
  display:flex;flex-direction:column;gap:8px;
  padding:20px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--c-line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.rel-link:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.32)}
.rel-link strong{font-size:15px;font-weight:700;color:var(--c-text)}
.rel-link span{font-size:13px;line-height:1.65;color:var(--c-text4)}

/* 底部 CTA */
.cta-band{
  border-radius:var(--r-lg);position:relative;overflow:hidden;
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.45),rgba(122,92,255,.18),transparent);
}
.cta-band h2{font-size:clamp(21px,2.2vw,30px);line-height:1.35;font-weight:700;max-width:620px}
.cta-band p{margin-top:10px;font-size:14px;color:var(--c-text3);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{
  background:#0A0C16;border-top:1px solid transparent;
  background-image:linear-gradient(#0A0C16,#0A0C16),linear-gradient(90deg,transparent,rgba(43,227,200,.45),transparent);
  background-origin:border-box;background-clip:padding-box,border-box;
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--c-text4);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li a{font-size:14px;color:var(--c-text4);transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease)}
.footer-col li a:hover{color:var(--c-primary);padding-left:4px}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--c-text4)}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:20px 0 calc(20px + env(safe-area-inset-bottom));
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-text4)}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom nav a{font-size:13px;color:var(--c-text4);transition:color var(--dur) var(--ease)}
.footer-bottom nav a:hover{color:var(--c-primary)}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:50;
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:999px;
  background:var(--c-primary);color:var(--c-invert);
  font-size:14px;font-weight:700;
  box-shadow:var(--shadow-glow);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),filter var(--dur) var(--ease);
}
.float-cta.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta:hover{filter:brightness(1.08)}

@media (max-width:1023px){
  :root{--sp-sec:72px}
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .check-layout{grid-template-columns:1fr;gap:28px}
  .order-grid{grid-template-columns:repeat(2,1fr)}
  .order-card:nth-child(even){transform:none}
  .order-card:nth-child(even):hover{transform:translateY(-4px)}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .compare-row{grid-template-columns:1fr;gap:12px;padding:18px}
  .compare-head{display:none}
  .compare-arrow{justify-content:flex-start;padding-left:6px}
  .compare-arrow svg{transform:rotate(90deg)}
}
@media (max-width:640px){
  :root{--sp-sec:56px}
  body{font-size:15px}
  .container{padding:0 16px}
  .header-actions .btn-sm{display:none}
  .page-hero{min-height:180px;padding:40px 0}
  .page-hero .lede{font-size:14px}
  .card{padding:18px}
  .order-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-brand{grid-column:1 / -1}
  .cta-band{padding:24px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px}
  .float-cta{
    left:16px;right:16px;bottom:calc(12px + env(safe-area-inset-bottom));
    justify-content:center;border-radius:14px;
  }
}
@media print{
  .site-header,.float-cta,.drawer,.scrim{display:none !important}
  body{background:#fff;color:#111}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --c-bg:#0B0D18;
  --c-bg-2:#101326;
  --c-bg-3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text-2:#A6B0C6;
  --c-text-3:#6B7590;
  --c-body:#C8D1E2;
  --c-line:rgba(255,255,255,.08);
  --c-reverse:#06120F;
  --c-success:#3ED598;
  --c-warn:#FFC24B;
  --c-error:#FF6B6B;
  --grad-card:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 18px 40px -20px rgba(0,0,0,.75);
  --sh-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --sh-glow:0 0 0 1px rgba(43,227,200,.30), 0 10px 30px -10px rgba(43,227,200,.55);
  --trans:200ms cubic-bezier(.2,.7,.3,1);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 420px at 12% 4%,rgba(43,227,200,.12),transparent 70%),
    radial-gradient(560px 420px at 88% 10%,rgba(122,92,255,.10),transparent 72%);
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--c-primary);text-decoration:none;transition:color var(--trans)}
a:hover{color:#7ff3e2}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700}
h1{font-size:clamp(30px,4.4vw,54px);font-weight:800;line-height:1.22}
h2{font-size:clamp(23px,2.5vw,34px);line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.45}
h4{font-size:16px;font-weight:600;line-height:1.5}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
[data-anchor]{scroll-margin-top:88px}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background var(--trans),border-color var(--trans),backdrop-filter var(--trans);
}
.site-header.scrolled{
  background:rgba(8,10,18,.86);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text)}
.logo-mark{
  width:32px;height:32px;flex:0 0 32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(160deg,rgba(43,227,200,.22),rgba(122,92,255,.18));
  border:1px solid rgba(43,227,200,.35);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text span{font-size:16px;font-weight:800;color:var(--c-text);letter-spacing:.01em}
.logo-text small{font-size:11px;color:var(--c-text-3);font-weight:600;letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;
  border-radius:var(--r-sm);
  font-size:14.5px;
  font-weight:600;
  color:var(--c-text-2);
  transition:color var(--trans),background var(--trans);
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(43,227,200,0));
  transform:scaleX(0);transform-origin:left;transition:transform var(--trans);
}
.nav-menu a:hover{color:var(--c-text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--c-primary);background:rgba(43,227,200,.08)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 3px rgba(43,227,200,.16)}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 0 3px rgba(122,92,255,.18)}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  font-weight:700;font-size:15px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  transition:transform var(--trans),box-shadow var(--trans),filter var(--trans),border-color var(--trans),color var(--trans),background var(--trans);
}
.btn-primary{background:var(--c-primary);color:var(--c-reverse);box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:var(--c-reverse);box-shadow:0 0 0 1px rgba(43,227,200,.36),0 16px 36px -12px rgba(43,227,200,.62)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-accent{background:transparent;border-color:rgba(255,159,69,.45);color:var(--c-accent)}
.btn-accent:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:rgba(10,12,22,.96);
  backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--c-line);
  padding:88px 24px 32px;
  transform:translateX(105%);
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  z-index:70;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer a{display:block;padding:14px 4px;font-size:16px;font-weight:600;color:var(--c-text-2);border-bottom:1px solid var(--c-line)}
.drawer a.active,.drawer a:hover{color:var(--c-primary)}
.drawer .btn{width:100%;margin-top:24px}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.04);
  color:var(--c-text);font-size:18px;line-height:1;
}
.backdrop{position:fixed;inset:0;background:rgba(4,6,12,.6);opacity:0;visibility:hidden;transition:opacity var(--trans),visibility var(--trans);z-index:65}
.backdrop.open{opacity:1;visibility:visible}

/* 页头横幅 */
.page-banner{
  position:relative;
  padding:78px 0 64px;
  background-image:linear-gradient(160deg,rgba(8,10,18,.82),rgba(11,13,24,.86)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 300px at 78% 10%,rgba(43,227,200,.14),transparent 70%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:20px}
.breadcrumb a{color:var(--c-text-2);font-weight:600}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-text-3)}
.breadcrumb .current{color:var(--c-text-3)}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(43,227,200,.10);
  border:1px solid rgba(43,227,200,.28);
  color:var(--c-primary);
  font-size:13px;font-weight:700;letter-spacing:.02em;
  margin-bottom:18px;
}
.banner-lead{max-width:760px;margin-top:18px;color:var(--c-text-2);font-size:16px}
.banner-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:32px}
.banner-stats div{min-width:120px}
.banner-stats strong{display:block;font-size:26px;font-weight:800;color:var(--c-accent);font-variant-numeric:tabular-nums}
.banner-stats span{font-size:13px;color:var(--c-text-3)}

/* 板块 */
.section{padding:var(--sp-section) 0;position:relative}
.section--alt{background:var(--c-bg-2)}
.section--deep{background:var(--c-bg-3)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--c-primary);margin-bottom:12px;
}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:15px}
.divider{height:1px;border:0;background:linear-gradient(90deg,rgba(43,227,200,.35),rgba(255,255,255,0))}

/* 两栏总览 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.overview-card{
  background:var(--grad-card);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-card);
  position:relative;
}
.overview-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.4),rgba(43,227,200,0));
}
.media-frame{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--sh-card);
  position:relative;
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.media-frame figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:var(--c-text-2);background:linear-gradient(0deg,rgba(8,10,18,.88),rgba(8,10,18,0))}
.check-list li{position:relative;padding-left:30px;margin-bottom:14px;color:var(--c-body)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;
  background:rgba(43,227,200,.14);
  border:1px solid rgba(43,227,200,.5);
}

/* 设备横向轨 */
.rail-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.rail-hint{font-size:13px;color:var(--c-text-3)}
.device-rail{
  display:flex;gap:24px;
  overflow-x:auto;
  padding-bottom:12px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.device-rail::-webkit-scrollbar{height:6px}
.device-rail::-webkit-scrollbar-thumb{background:rgba(43,227,200,.35);border-radius:999px}
.device-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--grad-card);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-card);
  transition:transform var(--trans),border-color var(--trans),box-shadow var(--trans);
}
.device-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3);box-shadow:var(--sh-hover)}
.device-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid rgba(255,255,255,.10);margin-bottom:18px}
.device-card h3{margin-bottom:8px}
.device-card p{font-size:14px;color:var(--c-text-2)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:var(--c-primary);
}
.chip--accent{color:var(--c-accent);border-color:rgba(255,159,69,.35);background:rgba(255,159,69,.08)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}

/* 规格定义列表 */
.spec-wrap{
  background:var(--grad-card);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  padding:8px 28px;
  box-shadow:var(--sh-card);
}
.spec-row{
  display:grid;grid-template-columns:170px 1fr;gap:24px;
  padding:20px 0;
  border-bottom:1px solid var(--c-line);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:13px;font-weight:700;color:var(--c-text-3);letter-spacing:.02em}
.spec-row dd{margin:0;color:var(--c-body);font-size:15px}

/* 自检步骤 */
.step-list{position:relative;padding-left:44px}
.step-list::before{
  content:"";position:absolute;left:13px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(43,227,200,.6),rgba(43,227,200,0));
}
.step-list li{position:relative;margin-bottom:26px}
.step-list li:last-child{margin-bottom:0}
.step-list .num{
  position:absolute;left:-44px;top:0;
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--c-primary);
  background:rgba(43,227,200,.10);
  border:1px solid rgba(43,227,200,.45);
  font-variant-numeric:tabular-nums;
}
.step-list h4{margin-bottom:6px}
.step-list p{font-size:14.5px;color:var(--c-text-2)}

.note-bar{
  border-left:3px solid var(--c-accent);
  background:rgba(255,159,69,.07);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:18px 22px;
  color:var(--c-text-2);
  font-size:14.5px;
  margin-top:32px;
}
.note-bar strong{color:var(--c-accent)}

/* 核对清单双列 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.info-card{
  background:var(--grad-card);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:transform var(--trans),border-color var(--trans);
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.3)}
.info-card h3{margin-bottom:10px}
.info-card p{font-size:14.5px;color:var(--c-text-2)}

/* FAQ */
.faq-list{display:grid;gap:16px}
.faq-item{
  background:var(--grad-card);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  overflow:hidden;
  position:relative;
  transition:border-color var(--trans);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(43,227,200,.05));
  opacity:0;transition:opacity var(--trans);
}
.faq-item.open{border-color:rgba(43,227,200,.34)}
.faq-item.open::before{opacity:1}
.faq-q{margin:0}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:19px;font-weight:600;color:var(--c-text);line-height:1.45;
}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform var(--trans),opacity var(--trans);
}
.faq-icon::before{left:3px;top:10px;width:16px;height:2px}
.faq-icon::after{left:10px;top:3px;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{padding:0 24px 22px;color:var(--c-text-2);font-size:15px}

/* 相关分类 */
.related{display:flex;flex-wrap:wrap;gap:16px}
.related a{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:var(--r-pill);
  background:var(--grad-card);
  border:1px solid rgba(255,255,255,.12);
  color:var(--c-text);
  font-size:14.5px;font-weight:600;
  transition:transform var(--trans),border-color var(--trans),color var(--trans);
}
.related a span{color:var(--c-text-3);font-size:13px;font-weight:600}
.related a:hover{transform:translateY(-3px);border-color:rgba(43,227,200,.45);color:var(--c-primary)}

/* 底部 CTA */
.cta-band{
  background:var(--grad-card);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  padding:40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:40px;right:40px;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.5),rgba(43,227,200,0));
}
.cta-band h2{margin-bottom:10px}
.cta-band p{color:var(--c-text-2);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:55;
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-pill);
  background:var(--c-primary);color:var(--c-reverse);
  font-weight:800;font-size:15px;
  box-shadow:var(--sh-glow);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--trans),visibility var(--trans),transform var(--trans),filter var(--trans);
}
.float-cta.visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{filter:brightness(1.08);color:var(--c-reverse);transform:translateY(-2px)}

/* 页脚 */
.site-footer{
  background:#0A0C16;
  border-top:1px solid var(--c-line);
  margin-top:0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.5),rgba(255,255,255,0));
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand p{margin-top:16px;color:var(--c-text-2);font-size:14.5px}
.footer-col h4{margin-bottom:16px;font-size:15px;color:var(--c-text)}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:var(--c-text-2);font-size:14.5px}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{color:var(--c-text-2);font-size:14px}
.footer-bottom{
  border-top:1px solid var(--c-line);
  padding:20px 0 32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.footer-bottom p{color:var(--c-text-3);font-size:13px}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom nav a{color:var(--c-text-3);font-size:13px}
.footer-bottom nav a:hover{color:var(--c-primary)}

/* 响应式 */
@media (max-width:1023px){
  :root{--sp-section:72px}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-ghost{display:none}
  .split{grid-template-columns:1fr;gap:32px}
  .grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  :root{--sp-section:56px}
  body{font-size:15px}
  .container{padding:0 16px}
  .header-inner{min-height:64px;gap:12px}
  .logo-text span{font-size:15px}
  .header-actions .btn-sm{padding:10px 16px;font-size:13.5px}
  .page-banner{padding:56px 0 48px}
  .banner-stats{gap:20px}
  .banner-stats strong{font-size:22px}
  .spec-wrap{padding:4px 18px}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .cta-band{padding:26px 20px}
  .device-card{flex:0 0 260px}
  .faq-q button{font-size:17px;padding:18px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-cta{
    left:16px;right:16px;bottom:0;
    justify-content:center;border-radius:0;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom,0px));
    transform:translateY(100%);
  }
  .float-cta.visible{transform:translateY(0)}
}
@media print{
  .float-cta,.site-header,.drawer,.backdrop{display:none}
  body{background:#fff;color:#111}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category5 */
:root{
  --c-bg:#0B0D18;
  --c-bg2:#101326;
  --c-bg3:#080A12;
  --c-primary:#2BE3C8;
  --c-accent:#FF9F45;
  --c-violet:#7A5CFF;
  --c-text:#E9EEF8;
  --c-text2:#A6B0C6;
  --c-text3:#6B7590;
  --c-line:rgba(255,255,255,.08);
  --c-body:#C8D1E2;
  --c-glass:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
  --shadow-hover:0 26px 56px -24px rgba(0,0,0,.85);
  --glow-btn:0 0 0 1px rgba(43,227,200,.30),0 10px 30px -10px rgba(43,227,200,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
  --sec-pad:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
section[id]{scroll-margin-top:88px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-pad) 0;}
.section-alt{background:var(--c-bg2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{margin-bottom:40px;}
.section-title{font-size:clamp(23px,2.5vw,32px);font-weight:700;line-height:1.3;}
.section-lead{margin-top:12px;font-size:15px;color:var(--c-text2);max-width:760px;line-height:1.75;}
.hl{color:var(--c-primary);}

/* 玻璃卡 */
.glass{
  background:var(--c-glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(11,13,24,.88);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(43,227,200,.22),rgba(122,92,255,.16));
  border:1px solid rgba(43,227,200,.35);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;font-size:15px;}
.logo-text small{font-size:11px;font-weight:600;color:var(--c-text3);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;font-size:14px;font-weight:600;color:var(--c-text2);
  transition:color var(--t) var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),rgba(43,227,200,0));
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--c-primary);}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;margin-right:6px;box-shadow:0 0 0 3px rgba(43,227,200,.15);}
.nav-dot--violet{background:var(--c-violet);box-shadow:0 0 0 3px rgba(122,92,255,.18);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background-color var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),filter var(--t) var(--ease);
}
.btn-primary{background:var(--c-primary);color:#06120F;box-shadow:var(--glow-btn);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(43,227,200,.42),0 16px 36px -12px rgba(43,227,200,.65);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--c-text);border-radius:var(--r-sm);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  cursor:pointer;padding:0;place-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);margin:3px auto;}
.nav-toggle:hover{border-color:rgba(43,227,200,.45);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:89;background:rgba(4,6,12,.62);
  opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(86vw,340px);
  background:rgba(10,12,22,.97);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--c-line);
  transform:translateX(100%);
  transition:transform 240ms var(--ease);
  padding:24px;display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-sm);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);color:var(--c-text);font-size:22px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--c-text2);
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(43,227,200,.10);color:var(--c-primary);}
.drawer-cta{margin-top:auto;}

/* 页头横幅 */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);}
.page-head-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(11,13,24,.76),rgba(8,10,18,.93)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-head-inner{position:relative;min-height:280px;padding:56px 0;display:flex;flex-direction:column;justify-content:center;gap:16px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text3);}
.breadcrumb a{color:var(--c-text2);transition:color var(--t) var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-text3);}
.breadcrumb .current{color:var(--c-text3);}
.badge{
  display:inline-flex;align-items:center;gap:6px;width:fit-content;
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--c-glass);border:1px solid rgba(255,255,255,.10);color:var(--c-primary);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
}
.badge-accent{color:var(--c-accent);}
.page-head h1{font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.22;max-width:900px;}
.page-head-lead{font-size:16px;color:var(--c-text2);max-width:680px;line-height:1.75;}

/* 搜索 */
.search-panel{padding:32px;border-radius:var(--r-lg);position:relative;overflow:hidden;}
.search-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.45),transparent);
}
.search-panel h2{font-size:clamp(21px,2.2vw,26px);font-weight:700;line-height:1.35;}
.search-panel .search-sub{margin-top:8px;font-size:14px;color:var(--c-text2);}
.search-form{display:flex;gap:12px;margin-top:24px;}
.search-form input{
  flex:1;height:52px;padding:0 18px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  color:var(--c-text);font-size:15px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background-color var(--t) var(--ease);
}
.search-form input::placeholder{color:var(--c-text3);}
.search-form input:focus{outline:none;border-color:var(--c-primary);background:rgba(43,227,200,.06);box-shadow:0 0 0 4px rgba(43,227,200,.14);}
.search-hint{margin-top:14px;font-size:13px;color:var(--c-text3);}

/* 快捷入口宫格 */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px;}
.entry-card{
  position:relative;overflow:hidden;padding:24px;border-radius:var(--r-lg);
  background:var(--c-glass);border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.entry-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.42),transparent);
}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(43,227,200,.35);box-shadow:var(--shadow-hover);}
.entry-icon{
  width:44px;height:44px;border-radius:var(--r-md);display:grid;place-items:center;margin-bottom:16px;
  background:rgba(43,227,200,.10);border:1px solid rgba(43,227,200,.28);
}
.entry-icon svg{width:20px;height:20px;}
.entry-card h3{font-size:18px;font-weight:600;line-height:1.45;}
.entry-card p{margin-top:8px;font-size:14px;color:var(--c-text2);line-height:1.7;}
.entry-link{display:inline-block;margin-top:16px;font-size:13px;font-weight:600;color:var(--c-primary);}
.entry-link::after{content:" →";}

/* 图文两栏 */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.10);
}
.steps{margin-top:28px;}
.step{position:relative;padding-left:56px;padding-bottom:28px;}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::after{
  content:"";position:absolute;left:15px;top:38px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(43,227,200,.5),rgba(43,227,200,0));
}
.step-num{
  position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--c-primary);
  background:rgba(255,255,255,.06);border:1px solid rgba(43,227,200,.5);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;font-weight:600;line-height:1.45;}
.step p{margin-top:6px;font-size:15px;color:var(--c-text2);line-height:1.75;}

/* FAQ 两列错列 */
.faq-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;margin-top:40px;}
.faq-col{display:flex;flex-direction:column;gap:16px;min-width:0;}
.faq-col--offset{margin-top:44px;}
ul.faq-accordion{
  margin:0;padding:0;list-style:none;background:transparent;border:0;
  display:flex;flex-direction:column;gap:16px;
  max-width:none;
}
ul.faq-accordion li.accordion-item{
  position:relative;margin:0;padding:0;list-style:none;overflow:hidden;
  background:var(--c-glass);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
ul.faq-accordion li.accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--c-primary),rgba(43,227,200,0));
  opacity:0;transition:opacity var(--t) var(--ease);
}
ul.faq-accordion li.accordion-item.is-open{border-color:rgba(43,227,200,.38);box-shadow:var(--shadow-hover);}
ul.faq-accordion li.accordion-item.is-open::before{opacity:1;}
ul.faq-accordion .accordion-title{
  display:flex;align-items:flex-start;gap:16px;margin:0;
  padding:20px 24px;background:transparent;border:0;color:var(--c-text);line-height:1.45;
  cursor:pointer;font-size:inherit;
}
ul.faq-accordion .accordion-title:hover{color:var(--c-primary);}
ul.faq-accordion .accordion-title h3{flex:1;font-size:18px;font-weight:600;line-height:1.45;color:inherit;}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;margin-top:3px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:transform var(--t) var(--ease);}
ul.faq-accordion li.is-open .faq-icon::after{transform:scaleY(0);}
ul.faq-accordion .accordion-content{
  display:block;max-height:0;overflow:hidden;padding:0;border:0;background:transparent;
  transition:max-height 260ms var(--ease);
}
ul.faq-accordion .accordion-content p{
  padding:0 24px 22px;font-size:15px;color:var(--c-text2);line-height:1.8;
}

/* 相关分类互链 */
.rel-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:32px;}
.rel-card{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:16px 20px;border-radius:var(--r-pill);text-align:center;
  background:var(--c-glass);border:1px solid rgba(255,255,255,.10);
  font-size:14px;font-weight:600;color:var(--c-text2);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(43,227,200,.45);color:var(--c-primary);box-shadow:var(--shadow-card);}

/* 底部 CTA */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px;border-radius:var(--r-lg);
  background:var(--c-glass);border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(43,227,200,.5),rgba(122,92,255,.25),transparent);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.35;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--c-text2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* 页脚 */
.site-footer{position:relative;background:#0A0C16;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,200,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--c-text2);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--c-text2);transition:color var(--t) var(--ease);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:13px;color:var(--c-text3);line-height:1.8;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--c-text3);transition:color var(--t) var(--ease);}
.footer-bottom a:hover{color:var(--c-primary);}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* 响应式 */
@media (max-width:1199px){
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  :root{--sec-pad:72px;}
  .nav-menu{display:none;}
  .nav-toggle{display:grid;}
  .header-actions .btn-primary{padding:0 18px;font-size:13px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:2;}
  .faq-columns{grid-template-columns:1fr;}
  .faq-col--offset{margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sec-pad:56px;}
  .container{padding:0 16px;}
  body{font-size:15px;}
  .page-head-inner{min-height:180px;padding:40px 0;gap:14px;}
  .search-panel{padding:24px;}
  .search-form{flex-direction:column;}
  .search-form input{height:48px;}
  .search-form .btn{width:100%;}
  .entry-grid{grid-template-columns:1fr;gap:16px;}
  .rel-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}
  .footer-brand{grid-column:1 / -1;}
  ul.faq-accordion .accordion-title{padding:18px 18px;}
  ul.faq-accordion .accordion-content p{padding:0 18px 20px;}
  .float-cta{
    left:16px;right:16px;bottom:0;
    padding:12px 0 calc(12px + env(safe-area-inset-bottom,0px));
    background:rgba(10,12,22,.94);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-top:1px solid var(--c-line);
  }
  .float-cta .btn{width:100%;}
}
@media (max-width:520px){
  .header-actions .btn-sm{display:none;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .step{padding-left:48px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}