/* roulang page: index */
:root{
  --bg:#0A0E18;
  --bg-2:#0D1220;
  --panel:#111827;
  --panel-2:#131A2A;
  --cyan:#19E0FF;
  --cyan-deep:#0FA8C6;
  --magenta:#FF3D8B;
  --text:#E6ECF7;
  --body:#C9D1E1;
  --dim:#7D8AA5;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.14);
  --radius-lg:18px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(25,224,255,.4),0 8px 24px rgba(25,224,255,.25);
  --glow-magenta:0 0 0 1px rgba(255,61,139,.35),0 8px 24px rgba(255,61,139,.22);
  --gap-section:96px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:#fff;font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0;}
h1{font-size:clamp(28px,4.2vw,48px);}
h2{font-size:clamp(22px,3vw,34px);}
h3{font-size:clamp(18px,2.2vw,24px);font-weight:600;}
::selection{background:rgba(25,224,255,.3);color:#fff;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--gap-section) 0;position:relative;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--dim);font-size:16px;line-height:1.85;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);display:inline-block;}
.lead-text{font-size:17px;color:var(--body);max-width:820px;line-height:1.9;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(120deg,var(--cyan),#4AF0FF);color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(25,224,255,.55),0 12px 30px rgba(25,224,255,.35);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--border-strong);color:var(--text);}
.btn-ghost:hover{border-color:rgba(25,224,255,.5);color:#fff;transform:translateY(-1px);}
.btn-magenta{background:linear-gradient(120deg,var(--magenta),#FF77AF);color:#1A0310;box-shadow:var(--glow-magenta);}
.btn-magenta:hover{transform:translateY(-1px);filter:brightness(1.06);}
.btn-block{width:100%;}
.btn-sm{padding:10px 18px;font-size:14px;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;
  color:var(--cyan);border:1px solid rgba(25,224,255,.35);
  background:rgba(25,224,255,.07);letter-spacing:.5px;line-height:1.6;
}
.tag--magenta{color:#FF8CBB;border-color:rgba(255,61,139,.35);background:rgba(255,61,139,.08);}
.tag--solid{background:rgba(255,255,255,.06);color:var(--body);border-color:var(--border);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(10,14,24,.72);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,padding .25s ease;
}
.site-header.is-scrolled{background:rgba(10,14,24,.92);border-bottom-color:var(--border);}
.nav{
  display:flex;align-items:center;gap:20px;
  padding:16px 0;transition:padding .25s ease;
}
.site-header.is-scrolled .nav{padding:10px 0;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(25,224,255,.9),rgba(255,61,139,.75));
  display:flex;align-items:center;justify-content:center;
  color:#04121A;font-weight:800;font-size:17px;
  box-shadow:0 0 0 1px rgba(25,224,255,.35),0 6px 18px rgba(25,224,255,.2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-title{color:#fff;font-size:17px;font-weight:700;letter-spacing:.5px;}
.logo-sub{font-size:11px;color:var(--dim);letter-spacing:2px;}
.nav-pills{display:flex;align-items:center;gap:8px;margin:0 auto;}
.nav-pill{
  display:inline-flex;align-items:center;
  padding:9px 16px;border-radius:999px;font-size:14px;
  border:1px solid transparent;color:var(--body);
  transition:all .18s ease;white-space:nowrap;
}
.nav-pill:hover{background:rgba(255,255,255,.06);color:#fff;border-color:var(--border);}
.nav-pill.is-active{color:var(--cyan);border-color:rgba(25,224,255,.45);background:rgba(25,224,255,.08);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--border);
  color:#fff;cursor:pointer;align-items:center;justify-content:center;font-size:17px;
}
.drawer{
  position:fixed;inset:0;z-index:200;background:rgba(8,11,20,.98);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .3s ease,opacity .3s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.05);color:#fff;font-size:18px;cursor:pointer;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-radius:14px;font-size:17px;font-weight:600;color:#fff;
  background:var(--panel-2);border:1px solid var(--border);
}
.drawer-link span.dot{color:var(--cyan);font-size:13px;font-weight:400;}
.drawer-link.is-active{border-color:rgba(25,224,255,.5);color:var(--cyan);}
.drawer-cta{margin-top:auto;padding-top:20px;display:grid;gap:10px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 84px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.32;
}
.hero::after{
  content:"";position:absolute;inset: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:52px 52px;
  mask-image:radial-gradient(circle at 30% 40%,#000 10%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 10%,transparent 76%);
}
.hero-inner{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;}
.hero-brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 15px;border-radius:999px;margin-bottom:20px;
  background:rgba(255,255,255,.05);border:1px solid var(--border-strong);
  font-size:13px;color:var(--body);
}
.hero-brand i{color:var(--cyan);}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--cyan);}
.hero-sub{font-size:17px;color:var(--body);max-width:560px;line-height:1.9;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--dim);
}
.hero-badges i{color:var(--cyan);font-size:12px;}
.hero-visual{position:relative;}
.hero-visual .visual-frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border-strong);box-shadow:var(--shadow);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.hero-visual .visual-frame img{width:100%;height:340px;object-fit:cover;border-radius:0;}
.hero-visual .visual-mask{
  position:absolute;left:0;right:0;bottom:0;height:38%;
  background:linear-gradient(180deg,transparent,rgba(25,224,255,.28));
  pointer-events:none;
}
.visual-card{
  position:absolute;left:-26px;bottom:-26px;
  background:var(--panel-2);border:1px solid var(--border-strong);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow);
  min-width:200px;
}
.visual-card b{display:block;color:#fff;font-size:24px;line-height:1.3;}
.visual-card span{font-size:12px;color:var(--dim);}
.visual-card .bar{height:6px;border-radius:99px;background:rgba(255,255,255,.1);margin-top:10px;overflow:hidden;}
.visual-card .bar i{display:block;height:100%;width:82%;background:linear-gradient(90deg,var(--cyan),var(--magenta));}

/* ---------- Trust strip ---------- */
.trust{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg-2);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.trust-item{padding:28px 24px;border-right:1px solid var(--border);}
.trust-item:last-child{border-right:none;}
.trust-item b{display:block;color:#fff;font-size:26px;line-height:1.3;margin-bottom:4px;}
.trust-item b i{font-size:15px;color:var(--cyan);margin-right:4px;}
.trust-item span{font-size:13px;color:var(--dim);}

/* ---------- Tier ladder ---------- */
.tier-list{display:grid;gap:18px;}
.tier{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:22px;
  padding:26px 30px;border-radius:var(--radius);
  background:var(--panel-2);border:1px solid var(--border);
  transition:border-color .2s ease,transform .2s ease;
}
.tier:hover{border-color:rgba(25,224,255,.35);transform:translateX(4px);}
.tier-1{width:76%;}
.tier-2{width:88%;border-color:rgba(25,224,255,.22);}
.tier-3{width:100%;border-color:rgba(255,61,139,.3);background:linear-gradient(100deg,rgba(255,61,139,.08),var(--panel-2) 60%);}
.tier-index{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:var(--cyan);
  background:rgba(25,224,255,.08);border:1px solid rgba(25,224,255,.3);
}
.tier-3 .tier-index{color:#FF8CBB;background:rgba(255,61,139,.1);border-color:rgba(255,61,139,.35);}
.tier-body h3{margin-bottom:6px;font-size:19px;}
.tier-body p{font-size:14.5px;color:var(--dim);}
.tier-meta{font-size:13px;color:var(--body);text-align:right;}
.tier-meta b{display:block;color:#fff;font-size:18px;}

/* ---------- Plans ---------- */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.plan{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 22px;display:flex;flex-direction:column;gap:14px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.plan:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow);}
.plan.is-featured{border-color:rgba(25,224,255,.45);box-shadow:0 0 0 1px rgba(25,224,255,.25),0 14px 34px rgba(0,0,0,.4);}
.plan-head{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.plan-name{font-size:17px;color:#fff;font-weight:700;}
.plan-price{font-size:13px;color:var(--dim);}
.plan-price b{font-size:22px;color:var(--cyan);margin-right:2px;}
.plan-desc{font-size:13.5px;color:var(--dim);line-height:1.75;min-height:48px;}
.plan-rows{border-top:1px dashed var(--border);margin-top:4px;}
.plan-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed var(--border);font-size:14px;
}
.plan-row:last-child{border-bottom:none;}
.plan-row span{color:var(--dim);}
.plan-row strong{color:var(--text);font-weight:600;text-align:right;}
.plan .btn{margin-top:auto;}

/* ---------- Limited bar ---------- */
.limited-wrap{padding:0 0 var(--gap-section);}
.limited{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:34px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(100deg,rgba(255,61,139,.16),rgba(25,224,255,.1));
  border:1px solid rgba(255,61,139,.32);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  position:relative;overflow:hidden;
}
.limited::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);
  opacity:.6;pointer-events:none;
}
.limited-text{position:relative;z-index:2;}
.limited-text h2{font-size:clamp(20px,2.4vw,28px);margin:10px 0 8px;}
.limited-text p{font-size:14.5px;color:var(--body);}
.limited-action{position:relative;z-index:2;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.limited-action small{font-size:12px;color:var(--dim);}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px;align-items:start;}
.post-card{
  background:var(--panel-2);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(25,224,255,.4);box-shadow:var(--shadow);}
.post-card--lead .post-thumb{display:block;overflow:hidden;}
.post-card--lead .post-thumb img{width:100%;height:250px;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.post-card--lead:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:22px 24px 24px;}
.post-title{font-size:19px;line-height:1.5;margin:12px 0 10px;}
.post-title a:hover{color:var(--cyan);}
.post-excerpt{font-size:14.5px;color:var(--dim);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:13px;color:var(--dim);}
.link-arrow{color:var(--cyan);font-size:13px;}
.link-arrow:hover{text-decoration:underline;}
.news-side{display:grid;gap:16px;}
.mini-card{
  display:grid;grid-template-columns:130px 1fr;gap:16px;padding:16px;
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  transition:transform .2s ease,border-color .2s ease;
}
.mini-card:hover{transform:translateY(-2px);border-color:rgba(25,224,255,.4);}
.mini-card .thumb{overflow:hidden;border-radius:var(--radius-sm);}
.mini-card .thumb img{width:100%;height:96px;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.mini-card:hover .thumb img{transform:scale(1.04);}
.mini-card h3{font-size:15.5px;line-height:1.55;margin:8px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-card h3 a:hover{color:var(--cyan);}
.mini-card .mini-meta{font-size:12.5px;color:var(--dim);display:flex;gap:10px;align-items:center;}
.news-foot{margin-top:34px;display:flex;justify-content:center;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--panel);border:1px dashed var(--border-strong);border-radius:var(--radius);
}
.empty-state i{font-size:30px;color:var(--cyan);opacity:.7;display:block;margin-bottom:14px;}
.empty-state p{color:var(--dim);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;align-items:start;}
.faq-col{display:grid;gap:18px;}
.faq-item{
  background:var(--panel-2);border:1px solid var(--border);border-radius:14px;
  padding:0 22px;transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--border-strong);}
.faq-item[open]{border-color:rgba(25,224,255,.35);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;
  padding:19px 0;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:4px;height:16px;border-radius:2px;background:var(--cyan);flex:0 0 auto;
}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:20px;color:var(--cyan);line-height:1;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 0 20px 16px;font-size:14.5px;color:var(--dim);line-height:1.9;}

/* ---------- Contact ---------- */
.contact-band{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start;}
.contact-info h2{margin-bottom:16px;}
.contact-info p{color:var(--dim);font-size:15px;line-height:1.9;margin-bottom:24px;}
.contact-points{display:grid;gap:14px;}
.contact-point{display:flex;gap:14px;align-items:flex-start;}
.contact-point i{color:var(--cyan);font-size:16px;margin-top:5px;}
.contact-point b{display:block;color:var(--text);font-size:15px;font-weight:600;}
.contact-point span{font-size:13.5px;color:var(--dim);}
.form-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:13.5px;color:var(--body);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid var(--border-strong);
  color:var(--text);font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.8;}
.field input::placeholder,.field textarea::placeholder{color:#5D6980;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(25,224,255,.14);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7D8AA5 50%),linear-gradient(135deg,#7D8AA5 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% + 2px),calc(100% - 15px) calc(50% + 2px);
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.form-note{font-size:12.5px;color:var(--dim);margin-top:14px;line-height:1.7;}

/* ---------- Footer ---------- */
.site-footer{background:#080B14;border-top:1px solid var(--border);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--dim);line-height:1.9;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--dim);transition:color .18s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{font-size:14px;color:var(--dim);display:flex;gap:9px;align-items:flex-start;}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#65718A;}
.footer-bottom .fb-links{display:flex;gap:20px;}
.footer-bottom .fb-links a{font-size:13px;color:#65718A;}
.footer-bottom .fb-links a:hover{color:var(--cyan);}

/* ---------- Mobile float CTA ---------- */
.mobile-cta{
  display:none;position:fixed;left:12px;right:12px;bottom:12px;z-index:110;
  gap:10px;padding:10px;border-radius:16px;
  background:rgba(13,18,32,.94);border:1px solid var(--border-strong);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 12px 30px rgba(0,0,0,.5);
}
.mobile-cta .btn{flex:1;padding:13px 12px;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--gap-section:80px;}
  .nav-pill{padding:8px 13px;font-size:13.5px;}
  .plans{grid-template-columns:repeat(2,1fr);}
  .tier-1,.tier-2{width:88%;}
}
@media (max-width:991px){
  :root{--gap-section:72px;}
  .nav-pills{display:none;}
  .nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual .visual-frame img{height:280px;}
  .hero-sub{max-width:none;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item{border-bottom:1px solid var(--border);}
  .trust-item:nth-child(2n){border-right:none;}
  .trust-item:nth-child(n+3){border-bottom:none;}
  .tier-1,.tier-2,.tier-3{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .limited{flex-direction:column;align-items:flex-start;gap:22px;padding:30px;}
  .limited-action{align-items:flex-start;width:100%;}
}
@media (max-width:767px){
  :root{--gap-section:56px;}
  .container{padding:0 18px;}
  .section--tight{padding:48px 0;}
  .hero{padding:52px 0 60px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1;justify-content:center;min-height:44px;}
  .visual-card{left:12px;bottom:12px;padding:12px 16px;min-width:170px;}
  .visual-card b{font-size:20px;}
  .tier{grid-template-columns:48px 1fr;gap:16px;padding:22px 20px;}
  .tier-meta{grid-column:2;text-align:left;margin-top:6px;}
  .tier-index{width:44px;height:44px;font-size:16px;}
  .plans{grid-template-columns:1fr;}
  .mini-card{grid-template-columns:104px 1fr;}
  .mini-card .thumb img{height:84px;}
  .post-card--lead .post-thumb img{height:200px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .form-card{padding:22px;}
  .form-row{grid-template-columns:1fr;}
  .mobile-cta{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:480px){
  .logo-title{font-size:15px;}
  .logo-sub{letter-spacing:1px;}
  .trust-grid{grid-template-columns:1fr;}
  .trust-item{border-right:none;border-bottom:1px solid var(--border);}
  .trust-item:last-child{border-bottom:none;}
  .hero-badges{gap:8px;}
  .mini-card{grid-template-columns:1fr;}
  .mini-card .thumb img{height:150px;}
}

/* roulang page: article */
:root{
  --bg:#0A0E18;
  --bg-2:#0D1220;
  --panel:#111827;
  --panel-2:#131A2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#C9D1E1;
  --text-strong:#EAF1FF;
  --muted:#7D8AA5;
  --cyan:#19E0FF;
  --cyan-soft:rgba(25,224,255,.12);
  --magenta:#FF3D8B;
  --magenta-soft:rgba(255,61,139,.12);
  --radius-lg:18px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(25,224,255,.4), 0 8px 24px rgba(25,224,255,.25);
  --container:1200px;
  --read:800px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 420px at 12% -6%, rgba(25,224,255,.10), transparent 62%),
    radial-gradient(760px 380px at 92% 4%, rgba(255,61,139,.08), transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  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:52px 52px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease, box-shadow .25s ease, background-color .2s ease, border-color .2s ease, filter .2s ease;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#19E0FF,#49D2FF);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,224,255,.55), 0 12px 30px rgba(25,224,255,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-strong);
  color:var(--text-strong);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(25,224,255,.45);transform:translateY(-1px)}
.btn-magenta{
  background:linear-gradient(135deg,#FF3D8B,#FF6FA5);
  color:#210718;
  box-shadow:0 0 0 1px rgba(255,61,139,.4), 0 8px 24px rgba(255,61,139,.25);
}
.btn-magenta:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn:focus-visible,.nav-pill:focus-visible,.nav-toggle:focus-visible,a:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:999px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,14,24,.72);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,24,.92);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.nav{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:74px;
  padding:12px 0;
  transition:min-height .25s ease, padding .25s ease;
}
.site-header.is-scrolled .nav{min-height:64px;padding:8px 0}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  font-weight:700;font-size:18px;color:#04121A;
  background:linear-gradient(135deg,#19E0FF,#8FE9FF 55%,#FF3D8B);
  box-shadow:0 6px 18px rgba(25,224,255,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-title{font-size:15px;font-weight:700;color:var(--text-strong);letter-spacing:.2px}
.logo-sub{font-size:11px;color:var(--muted)}
.nav-pills{display:flex;align-items:center;gap:6px;flex-wrap:nowrap;margin:0 auto}
.nav-pill{
  padding:9px 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--text);
  border:1px solid transparent;
  background:rgba(255,255,255,.02);
  transition:color .2s ease, background-color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.nav-pill:hover{background:rgba(255,255,255,.07);color:var(--text-strong)}
.nav-pill.is-active{
  color:var(--cyan);
  border-color:rgba(25,224,255,.45);
  background:var(--cyan-soft);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text-strong);
  cursor:pointer;
}
.nav-drawer{
  display:none;
  flex-direction:column;
  gap:10px;
  padding:16px 0 22px;
}
.nav-drawer.is-open{display:flex}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:15px;
  color:var(--text-strong);
}
.drawer-link.is-active{border-color:rgba(25,224,255,.45);background:var(--cyan-soft);color:var(--cyan)}
.drawer-cta{display:flex;gap:10px;margin-top:6px}
.drawer-cta .btn{flex:1}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line);
  background-color:var(--bg-2);
  background-image:linear-gradient(120deg, rgba(10,14,24,.94) 0%, rgba(10,14,24,.86) 46%, rgba(10,14,24,.62) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-head::after{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(25,224,255,.20), transparent 66%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--text);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.4px;
  color:var(--cyan);
  border:1px solid rgba(25,224,255,.4);
  background:var(--cyan-soft);
}
.tag.tag-pink{color:#FF7FB0;border-color:rgba(255,61,139,.4);background:var(--magenta-soft)}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  font-weight:700;
  line-height:1.35;
  color:var(--text-strong);
  max-width:900px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:13px;
  color:var(--muted);
}
.article-meta i{color:var(--cyan);margin-right:6px}

/* ---------- 正文 ---------- */
.article-main{padding:64px 0 0}
.article-wrap{max-width:var(--read);margin:0 auto}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  line-height:1.5;
  color:var(--text-strong);
  margin:2.1em 0 .85em;
  padding-left:14px;
  border-left:4px solid var(--cyan);
}
.article-body h3{
  font-size:clamp(17px,2vw,20px);
  font-weight:600;
  color:var(--text-strong);
  margin:1.7em 0 .7em;
}
.article-body h4{
  font-size:16px;
  font-weight:600;
  color:var(--text-strong);
  margin:1.4em 0 .6em;
}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(25,224,255,.35);transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--cyan)}
.article-body strong{color:var(--text-strong)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{margin-bottom:.6em}
.article-body ul li::marker{color:var(--cyan)}
.article-body ol li::marker{color:var(--cyan);font-weight:600}
.article-body blockquote{
  margin:1.5em 0;
  padding:16px 22px;
  border-left:3px solid var(--magenta);
  border-radius:0 12px 12px 0;
  background:var(--magenta-soft);
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  border-radius:12px;
  margin:1.6em auto;
  box-shadow:var(--shadow);
}
.article-body figure{margin:1.6em 0}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--muted);
}
.article-body pre{
  margin:1.5em 0;
  padding:16px 18px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--bg-2);
  overflow-x:auto;
  font-size:14px;
  line-height:1.75;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(25,224,255,.1);
  color:#A8EEFF;
}
.article-body pre code{padding:0;background:transparent;color:var(--text)}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{background:rgba(255,255,255,.04);color:var(--text-strong);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}

.article-foot{
  margin-top:44px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--muted);
}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-weight:600}

/* ---------- 空态 ---------- */
.empty-state{
  padding:56px 26px;
  text-align:center;
  border-radius:var(--radius);
  border:1px dashed var(--line-strong);
  background:rgba(255,255,255,.02);
}
.empty-icon{
  width:64px;height:64px;border-radius:18px;margin:0 auto 18px;
  display:grid;place-items:center;
  font-size:26px;color:var(--cyan);
  background:var(--cyan-soft);
  border:1px solid rgba(25,224,255,.3);
}
.empty-state h2{font-size:20px;color:var(--text-strong);margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:22px}

/* ---------- 相关推荐 ---------- */
.related{padding:80px 0 0}
.section-head{margin-bottom:30px;max-width:760px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;color:var(--cyan);margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(22px,2.8vw,30px);
  font-weight:700;
  color:var(--text-strong);
  line-height:1.45;
  margin-bottom:12px;
}
.section-head p{font-size:15px;color:var(--muted)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(25,224,255,.4);box-shadow:var(--shadow)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .tag{position:absolute;left:12px;top:12px;background:rgba(10,14,24,.75)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.55}
.card-body p{font-size:14px;color:var(--muted);line-height:1.8}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-foot .arrow{color:var(--cyan);display:inline-flex;align-items:center;gap:6px}

/* ---------- CTA 通栏 ---------- */
.cta-band{margin:80px 0 0}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:26px 30px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(25,224,255,.28);
  background:linear-gradient(100deg, rgba(25,224,255,.14), rgba(255,61,139,.10) 65%, rgba(255,255,255,.03));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 0 0 1px rgba(255,255,255,.04), 0 18px 40px rgba(0,0,0,.35);
}
.cta-inner h2{font-size:clamp(19px,2.3vw,25px);color:var(--text-strong);margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--text)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:#080B13;
  border-top:1px solid var(--line);
  padding:60px 0 26px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:34px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--muted);max-width:340px;line-height:1.85}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-strong);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--muted)}
.footer-contact i{color:var(--cyan);margin-top:6px}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--muted);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a:hover{color:var(--cyan)}

/* ---------- 移动端底栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  gap:10px;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,14,24,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.mobile-bar .btn{flex:1;min-height:46px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-pill{padding:8px 13px;font-size:13.5px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-contact{grid-column:span 3}
}
@media (max-width:991px){
  .nav-pills{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav{margin-left:auto}
  .logo{margin-right:auto}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-head{padding:40px 0 36px}
  .article-main{padding:48px 0 0}
  .related{padding:64px 0 0}
  .cta-band{margin-top:64px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-head{padding:32px 0 30px}
  .article-title{font-size:clamp(22px,6vw,28px)}
  .article-main{padding:40px 0 0}
  .article-body{font-size:16px;line-height:1.85}
  .related{padding:56px 0 0}
  .card-grid{grid-template-columns:1fr}
  .cta-inner{padding:22px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-contact{grid-column:auto}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:92px}
  .article-foot{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .logo-sub{display:none}
  .logo-title{font-size:14px}
  .article-meta{gap:8px 16px;font-size:12.5px}
  .btn{padding:11px 18px;font-size:14px}
}

/* roulang page: category1 */
:root{
  --bg:#0A0E18;
  --bg-soft:#0D1220;
  --panel:#111827;
  --panel-2:#131A2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --cyan:#19E0FF;
  --cyan-deep:#0FA9C6;
  --cyan-soft:rgba(25,224,255,.12);
  --magenta:#FF3D8B;
  --magenta-soft:rgba(255,61,139,.14);
  --text:#EAF0FA;
  --body:#C9D1E1;
  --muted:#7D8AA5;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(25,224,255,.4), 0 8px 24px rgba(25,224,255,.25);
  --container:1200px;
  --gap:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.35;font-weight:700;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(25,224,255,.3);color:#fff;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(10,14,24,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,24,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:20px;
  height:78px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav{height:66px;}
.logo{display:inline-flex;align-items:center;gap:11px;}
.logo-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(25,224,255,.95),rgba(255,61,139,.75));
  color:#04121A;
  font-weight:800;
  font-size:19px;
  box-shadow:0 6px 18px rgba(25,224,255,.28);
  flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.logo-title{color:var(--text);font-weight:700;font-size:16px;letter-spacing:.2px;}
.logo-sub{color:var(--muted);font-size:12px;}
.nav-pills{
  justify-self:center;
  display:flex;
  align-items:center;
  gap:6px;
  padding:5px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.025);
}
.nav-pill{
  padding:9px 16px;
  border-radius:var(--radius-pill);
  font-size:14px;
  color:var(--body);
  white-space:nowrap;
  border:1px solid transparent;
  transition:all .2s ease;
}
.nav-pill:hover{color:var(--cyan);background:rgba(25,224,255,.08);}
.nav-pill.is-active{
  color:var(--cyan);
  border-color:rgba(25,224,255,.45);
  background:rgba(25,224,255,.1);
  box-shadow:0 0 0 1px rgba(25,224,255,.12) inset;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:17px;
  transition:all .2s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),#63a8ff);
  color:#04141C;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,224,255,.55),0 12px 30px rgba(25,224,255,.35);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{border-color:rgba(25,224,255,.55);color:var(--cyan);background:rgba(25,224,255,.07);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-magenta{
  background:linear-gradient(135deg,var(--magenta),#ff7ab0);
  color:#26030F;
  box-shadow:0 0 0 1px rgba(255,61,139,.4),0 8px 24px rgba(255,61,139,.28);
}
.btn-magenta:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-lg{padding:17px 34px;font-size:16px;}
.btn-block{width:100%;}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,7,14,.72);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:98;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:min(86vw,340px);
  height:100%;
  background:linear-gradient(180deg,#0E1424,#0A0E18);
  border-left:1px solid var(--line);
  z-index:99;
  transform:translateX(105%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--text);}
.drawer-close{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);
}
.drawer-close:hover{border-color:var(--cyan);color:var(--cyan);}
.drawer-links{display:flex;flex-direction:column;gap:10px;}
.drawer-link{
  padding:15px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:15px;
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.drawer-link::after{content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;color:var(--muted);}
.drawer-link:hover{border-color:rgba(25,224,255,.5);color:var(--cyan);background:rgba(25,224,255,.07);}
.drawer-link.is-active{border-color:rgba(25,224,255,.5);color:var(--cyan);background:rgba(25,224,255,.1);}
.drawer-cta{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:10px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--cyan);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px;}
h2.section-title{font-size:clamp(22px,3vw,34px);font-weight:700;margin-bottom:14px;}
.section-desc{color:var(--body);font-size:16px;margin:0;}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(13,18,32,.6);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);padding:14px 0;}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--body);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  padding:78px 0 72px;
  background-image:linear-gradient(90deg,rgba(10,14,24,.96) 0%,rgba(10,14,24,.82) 48%,rgba(10,14,24,.6) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(25,224,255,.4);
  background:rgba(25,224,255,.1);
  color:var(--cyan);
  font-size:13px;
  margin-bottom:20px;
}
.hero-tag i{font-size:12px;}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,46px);
  font-weight:700;
  letter-spacing:.5px;
  margin-bottom:20px;
}
.cat-hero h1 span{
  background:linear-gradient(120deg,var(--cyan),#8fb6ff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero .lead{
  font-size:17px;
  color:var(--body);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;
  color:var(--muted);
  padding:6px 13px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.hero-points i{color:var(--cyan);font-size:12px;}
.hero-visual{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:#0B1120;
}
.hero-visual img{width:100%;height:auto;display:block;border-radius:0;}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(25,224,255,.22),transparent 42%);
  pointer-events:none;
}
.hero-visual .flag{
  position:absolute;
  left:16px;bottom:16px;
  padding:8px 15px;
  border-radius:var(--radius-pill);
  background:rgba(10,14,24,.78);
  border:1px solid rgba(25,224,255,.4);
  color:var(--cyan);
  font-size:13px;
  backdrop-filter:blur(6px);
}

/* ============ 信任条 ============ */
.trust-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.trust-strip .item{
  background:var(--bg);
  padding:22px 20px;
  display:flex;
  align-items:center;
  gap:13px;
}
.trust-strip .item i{
  width:38px;height:38px;flex:none;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--cyan-soft);
  color:var(--cyan);
  font-size:15px;
}
.trust-strip .item strong{display:block;color:var(--text);font-size:15px;font-weight:600;}
.trust-strip .item small{color:var(--muted);font-size:12.5px;line-height:1.5;display:block;}

/* ============ 两列图文 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split.reverse .split-text{order:2;}
.split.reverse .split-media{order:1;}
.split-media{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,#131A2A,#0B1120);
  box-shadow:var(--shadow);
}
.split-media img{width:100%;border-radius:0;}
.split h3{font-size:clamp(18px,2.2vw,24px);font-weight:600;margin-bottom:14px;}
.split p{color:var(--body);font-size:15.5px;}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:8px;}
.check-list li{
  display:flex;
  gap:13px;
  padding:15px 17px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.028);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.check-list li:hover{border-color:rgba(25,224,255,.4);background:rgba(25,224,255,.05);transform:translateX(3px);}
.check-list i{color:var(--cyan);font-size:14px;margin-top:5px;flex:none;}
.check-list strong{display:block;color:var(--text);font-weight:600;font-size:15px;margin-bottom:3px;}
.check-list span{color:var(--muted);font-size:13.5px;line-height:1.7;display:block;}

/* ============ 渠道对比卡 ============ */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.compare-card{
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  background:var(--panel);
  padding:28px 24px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.compare-card:hover{border-color:rgba(25,224,255,.45);transform:translateY(-3px);box-shadow:var(--shadow);}
.compare-card .badge{
  align-self:flex-start;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  border:1px solid rgba(25,224,255,.4);
  color:var(--cyan);
  background:rgba(25,224,255,.08);
}
.compare-card.hot .badge{border-color:rgba(255,61,139,.45);color:var(--magenta);background:var(--magenta-soft);}
.compare-card h3{font-size:19px;font-weight:600;}
.compare-card .desc{color:var(--muted);font-size:14px;margin:0;}
.compare-rows{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.compare-rows div{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.compare-rows dt,.compare-rows span.k{color:var(--muted);}
.compare-rows span.v{color:var(--text);text-align:right;}
.compare-card .btn{margin-top:auto;}

/* ============ 安装后检查 ============ */
.tips-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.tip{
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  border-radius:var(--radius);
  padding:24px;
  display:flex;
  gap:16px;
  transition:border-color .2s ease,background .2s ease;
}
.tip:hover{border-color:rgba(25,224,255,.35);background:rgba(25,224,255,.045);}
.tip .num{
  flex:none;
  width:34px;height:34px;
  border-radius:10px;
  display:grid;place-items:center;
  background:rgba(255,61,139,.14);
  color:var(--magenta);
  font-size:13px;
  font-weight:700;
}
.tip h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.tip p{margin:0;color:var(--muted);font-size:14px;}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  align-items:start;
}
.faq-col{display:flex;flex-direction:column;gap:16px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.025);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:rgba(25,224,255,.4);background:rgba(25,224,255,.05);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:19px 20px;
  text-align:left;
  color:var(--text);
  font-size:15.5px;
  font-weight:600;
}
.faq-q .qt{display:flex;gap:12px;align-items:flex-start;}
.faq-q .qt::before{
  content:"";
  width:4px;height:18px;
  margin-top:5px;
  border-radius:2px;
  background:var(--cyan);
  flex:none;
}
.faq-q i{color:var(--muted);font-size:13px;margin-top:6px;transition:transform .2s ease,color .2s ease;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--cyan);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-a p{
  padding:0 20px 20px 36px;
  margin:0;
  color:var(--body);
  font-size:14.5px;
  line-height:1.85;
}

/* ============ CTA 条 ============ */
.cta-bar{
  position:relative;
  border-radius:var(--radius);
  border:1px solid rgba(25,224,255,.28);
  background:linear-gradient(120deg,rgba(25,224,255,.14),rgba(255,61,139,.12)),var(--panel-2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:34px 38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-bar::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 9px);
  pointer-events:none;
}
.cta-bar > *{position:relative;z-index:1;}
.cta-bar h3{font-size:clamp(19px,2.4vw,26px);margin-bottom:8px;}
.cta-bar p{margin:0;color:var(--body);font-size:14.5px;}
.cta-bar .actions{display:flex;gap:12px;flex-wrap:wrap;flex:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:#070A12;
  border-top:1px solid var(--line);
  padding:66px 0 30px;
  margin-top:20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{color:var(--muted);font-size:14px;margin:18px 0 0;max-width:330px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{display:flex;gap:10px;color:var(--muted);font-size:14px;align-items:flex-start;}
.footer-contact i{color:var(--cyan);font-size:13px;margin-top:6px;flex:none;}
.footer-bottom{
  margin-top:46px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{margin:0;color:var(--muted);font-size:13px;}
.fb-links{display:flex;gap:20px;}
.fb-links a{color:var(--muted);font-size:13px;}
.fb-links a:hover{color:var(--cyan);}

/* ============ 移动底部 CTA ============ */
.mobile-cta{
  display:none;
  position:fixed;
  left:12px;right:12px;bottom:12px;
  z-index:80;
  padding:10px;
  border-radius:var(--radius-pill);
  background:rgba(13,18,32,.92);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(12px);
  box-shadow:0 12px 30px rgba(0,0,0,.5);
  gap:10px;
}
.mobile-cta .btn{flex:1;padding:13px 16px;font-size:14px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-pills{gap:4px;}
  .nav-pill{padding:8px 12px;font-size:13.5px;}
  .split{gap:40px;}
}
@media (max-width:991px){
  .nav-pills{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions .btn-ghost{display:none;}
  .nav{grid-template-columns:auto 1fr auto;}
  .section{padding:72px 0;}
  .cat-hero{padding:60px 0 56px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px;}
  .trust-strip{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr 1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-text,.split.reverse .split-media{order:0;}
  .cta-bar{flex-direction:column;align-items:flex-start;text-align:left;}
}
@media (max-width:767px){
  body{padding-bottom:78px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .nav{height:66px;gap:12px;}
  .site-header.is-scrolled .nav{height:60px;}
  .logo-mark{width:36px;height:36px;font-size:17px;}
  .logo-title{font-size:14.5px;}
  .logo-sub{font-size:11px;}
  .nav-actions .btn-primary{display:none;}
  .cat-hero h1{font-size:clamp(26px,7.5vw,34px);}
  .cat-hero .lead{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1;min-width:150px;}
  .trust-strip{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .tips-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-bar{padding:26px 22px;}
  .cta-bar .actions{width:100%;}
  .cta-bar .actions .btn{flex:1;}
  .mobile-cta{display:flex;}
  .faq-a p{padding-left:22px;}
}
@media (max-width:480px){
  .btn{padding:13px 20px;font-size:14px;}
  .btn-lg{padding:15px 24px;font-size:15px;}
  .hero-actions .btn{min-width:100%;}
  .hero-points span{font-size:12.5px;padding:5px 11px;}
}

/* roulang page: category2 */
:root{
  --bg:#0A0E18;
  --bg-2:#0D1220;
  --surface:#131A2A;
  --surface-2:#111827;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#E9EFF9;
  --muted:#C9D1E1;
  --dim:#7D8AA5;
  --primary:#19E0FF;
  --primary-soft:rgba(25,224,255,.10);
  --primary-line:rgba(25,224,255,.45);
  --secondary:#FF3D8B;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-lg:0 20px 50px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,224,255,.40), 0 8px 24px rgba(25,224,255,.25);
  --container:1200px;
  --pad:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--muted);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:28px 28px;
  opacity:.45;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;}
p{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}
.site-header,main,.site-footer{position:relative;z-index:1;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(10,14,24,.72);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,24,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 28px rgba(0,0,0,.38);
}
.nav{
  display:flex;
  align-items:center;
  gap:16px;
  height:78px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav{height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;
  border-radius:13px;
  display:grid;place-items:center;
  font-size:18px;font-weight:700;
  color:#03131B;
  background:linear-gradient(135deg,#19E0FF,#5BF0FF);
  box-shadow:var(--glow);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.logo-title{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;}
.logo-sub{font-size:11px;color:var(--dim);letter-spacing:.4px;}
.nav-pills{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap;}
.nav-pill{
  padding:8px 14px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--muted);
  border:1px solid transparent;
  white-space:nowrap;
  transition:.2s ease;
}
.nav-pill:hover{color:#fff;background:rgba(255,255,255,.06);border-color:var(--line);}
.nav-pill.is-active{
  color:var(--primary);
  border-color:var(--primary-line);
  background:var(--primary-soft);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:10px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
  place-items:center;
  font-size:16px;
  transition:.2s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:var(--line-strong);}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;
  left:0;right:0;bottom:0;
  top:78px;
  z-index:49;
  background:rgba(10,14,24,.97);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:20px var(--pad) 32px;
  display:none;
  overflow-y:auto;
}
.nav-drawer.is-open{display:block;}
.nav-drawer h3{
  font-size:12px;
  letter-spacing:1.6px;
  color:var(--dim);
  font-weight:600;
  margin-bottom:14px;
  text-transform:uppercase;
}
.drawer-links{display:grid;gap:10px;}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:52px;
  padding:14px 18px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  transition:.2s ease;
}
.drawer-link:hover{border-color:var(--primary-line);background:var(--primary-soft);}
.drawer-link.is-active{border-color:var(--primary-line);color:var(--primary);background:var(--primary-soft);}
.drawer-link i{color:var(--dim);font-size:13px;}
.drawer-cta{margin-top:22px;display:grid;gap:10px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  min-height:46px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, filter .18s ease;
}
.btn-sm{padding:9px 16px;min-height:40px;font-size:13.5px;}
.btn-primary{
  background:linear-gradient(135deg,#19E0FF,#35C4FF);
  color:#03131B;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  transform:translateY(-1px);
  filter:brightness(1.1);
  box-shadow:0 0 0 1px rgba(25,224,255,.55), 0 12px 32px rgba(25,224,255,.36);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.045);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.09);
  border-color:var(--primary-line);
  color:#fff;
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-magenta{
  background:linear-gradient(135deg,#FF3D8B,#FF7AB0);
  color:#2A0014;
  box-shadow:0 0 0 1px rgba(255,61,139,.42), 0 8px 24px rgba(255,61,139,.26);
}
.btn-magenta:hover{
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(255,61,139,.6), 0 12px 30px rgba(255,61,139,.34);
}

/* ---------- 分类页首屏 ---------- */
.hero-cat{
  position:relative;
  overflow:hidden;
  padding:52px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(10,14,24,.86),rgba(10,14,24,.97)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.hero-cat::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(118deg,rgba(25,224,255,.12),transparent 46%);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--dim);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb i{font-size:10px;opacity:.7;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--primary);
  border:1px solid var(--primary-line);
  background:var(--primary-soft);
  margin-bottom:20px;
}
.hero-cat h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.22;
  letter-spacing:-.2px;
  margin-bottom:18px;
}
.hero-cat h1 em{
  font-style:normal;
  color:var(--primary);
  text-shadow:0 0 26px rgba(25,224,255,.35);
}
.hero-lead{
  font-size:16.5px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--dim);
}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;}
.hero-trust i{color:var(--primary);font-size:12px;}
.hero-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-lg);
  background:rgba(255,255,255,.03);
}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(25,224,255,.16),transparent 42%);
  pointer-events:none;
}
.hero-float{
  position:absolute;
  left:18px;
  bottom:18px;
  right:18px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(10,14,24,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.hero-float i{color:var(--primary);font-size:16px;}
.hero-float strong{display:block;color:var(--text);font-size:14px;font-weight:600;}
.hero-float span{display:block;color:var(--dim);font-size:12.5px;line-height:1.5;}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:52px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:1.4px;
  color:var(--primary);
  font-weight:600;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(25,224,255,.6);
}
.section-head h2{font-size:clamp(22px,3vw,34px);line-height:1.32;margin-bottom:14px;}
.section-head p{color:var(--dim);font-size:15.5px;}

/* ---------- 交替图文 ---------- */
.alt-list{display:grid;gap:64px;}
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.alt-row.reverse .alt-media{order:2;}
.alt-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--surface);
}
.alt-media img{width:100%;height:300px;object-fit:cover;border-radius:0;}
.alt-media::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(25,224,255,.12),transparent 50%);
  pointer-events:none;
}
.alt-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  border:1px solid var(--primary-line);
  background:var(--primary-soft);
  margin-bottom:16px;
}
.alt-body h3{font-size:clamp(18px,2.2vw,24px);margin-bottom:14px;}
.alt-body p{margin-bottom:16px;}
.check-list{display:grid;gap:10px;}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:var(--muted);
}
.check-list i{color:var(--primary);font-size:13px;margin-top:8px;flex:0 0 auto;}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.scene-card{
  padding:26px 22px;
  border-radius:var(--radius);
  background:var(--surface-2);
  border:1px solid var(--line);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.scene-card:hover{
  transform:translateY(-2px);
  border-color:var(--primary-line);
  box-shadow:var(--shadow);
}
.scene-icon{
  width:44px;height:44px;
  border-radius:13px;
  display:grid;place-items:center;
  background:rgba(25,224,255,.10);
  border:1px solid var(--primary-line);
  color:var(--primary);
  font-size:17px;
  margin-bottom:16px;
}
.scene-card h3{font-size:17px;margin-bottom:10px;}
.scene-card p{font-size:14.5px;color:var(--dim);line-height:1.8;}

/* ---------- 流程 ---------- */
.step-flow{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:18px;
  counter-reset:step;
}
.step-item{
  position:relative;
  padding:26px 20px 24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(25,224,255,.06),rgba(255,255,255,.02));
}
.step-item::before{
  counter-increment:step;
  content:"0" counter(step);
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--primary);
  margin-bottom:12px;
}
.step-item h3{font-size:16px;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--dim);line-height:1.75;}
.step-item::after{
  content:"";
  position:absolute;
  top:34px;
  right:-19px;
  width:18px;
  height:1px;
  background:var(--line-strong);
}
.step-item:last-child::after{display:none;}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  align-items:start;
}
.faq-item{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface-2);
  overflow:hidden;
  transition:border-color .2s ease, background .2s ease;
}
.faq-item[open]{border-color:var(--primary-line);background:rgba(25,224,255,.05);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:20px 22px;
  font-size:15.5px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  flex:0 0 auto;
  width:4px;
  height:16px;
  margin-top:6px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(25,224,255,.6);
}
.faq-item summary::after{
  content:"+";
  margin-left:auto;
  flex:0 0 auto;
  font-size:18px;
  line-height:1.4;
  color:var(--primary);
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-answer{
  padding:0 22px 22px 38px;
  font-size:14.8px;
  color:var(--muted);
  line-height:1.85;
}

/* ---------- 提示条 ---------- */
.notice-bar{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:20px 24px;
  border-radius:var(--radius);
  border:1px dashed var(--line-strong);
  background:rgba(255,61,139,.06);
  margin-top:44px;
}
.notice-bar i{color:var(--secondary);font-size:16px;margin-top:6px;}
.notice-bar p{font-size:14.5px;color:var(--muted);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(25,224,255,.28);
  background:linear-gradient(120deg,rgba(25,224,255,.12),rgba(255,61,139,.08) 70%,rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:44px 46px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow-lg);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(25,224,255,.28),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(21px,2.6vw,30px);margin-bottom:10px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:560px;}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#070A12;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{font-size:14px;color:var(--dim);margin-top:18px;max-width:300px;line-height:1.85;}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--dim);transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--dim);
  line-height:1.7;
}
.footer-contact i{color:var(--primary);font-size:13px;margin-top:7px;flex:0 0 auto;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:24px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--dim);}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{font-size:13px;color:var(--dim);transition:color .2s ease;}
.fb-links a:hover{color:var(--primary);}

/* ---------- 移动端底部 CTA ---------- */
.mobile-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:60;
  display:none;
  gap:10px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,14,24,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.mobile-cta .btn{flex:1;min-height:46px;font-size:14.5px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-pill{padding:7px 11px;font-size:13px;}
  .nav{gap:12px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .step-flow{grid-template-columns:repeat(3,1fr);}
  .step-item::after{display:none;}
}
@media (max-width:991px){
  .nav-pills{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:grid;}
  .nav{height:70px;}
  .site-header.is-scrolled .nav{height:64px;}
  .nav-drawer{top:70px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-media img{height:300px;object-fit:cover;}
  .section{padding:72px 0;}
  .section-tight{padding:58px 0;}
  .alt-row{grid-template-columns:1fr;gap:26px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-list{gap:52px;}
  .alt-media img{height:250px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--pad:16px;}
  body{font-size:15.5px;padding-bottom:74px;}
  .mobile-cta{display:flex;}
  .logo-title{font-size:14px;}
  .logo-sub{font-size:10.5px;}
  .hero-cat{padding:34px 0 52px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{flex:1;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .scene-grid{grid-template-columns:1fr;}
  .step-flow{grid-template-columns:1fr;}
  .alt-media img{height:210px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:28px 20px;}
  .cta-band-actions{width:100%;}
  .cta-band-actions .btn{flex:1;}
}
@media (max-width:480px){
  .logo-sub{display:none;}
  .hero-trust{gap:8px 16px;font-size:12.5px;}
  .faq-item summary{padding:16px 16px;font-size:14.8px;}
  .faq-answer{padding:0 16px 18px 32px;font-size:14.2px;}
  .btn{padding:12px 18px;font-size:14.5px;}
}

/* roulang page: category3 */
:root{
  --bg:#0A0E18;
  --bg-2:#0D1220;
  --panel:#111827;
  --panel-2:#131A2A;
  --cyan:#19E0FF;
  --cyan-2:#4FF0D0;
  --magenta:#FF3D8B;
  --text:#E8EEF9;
  --text-body:#C9D1E1;
  --text-dim:#7D8AA5;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.04);
  --radius:16px;
  --radius-sm:12px;
  --pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(25,224,255,.4), 0 8px 24px rgba(25,224,255,.25);
  --container:1200px;
  --sec:96px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text-body);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(900px 500px at 12% -8%, rgba(25,224,255,.10), transparent 62%),
    radial-gradient(700px 420px at 92% 6%, rgba(255,61,139,.07), transparent 60%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.022) 0 1px, transparent 1px 14px);
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;}
p{margin:0;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,14,24,.72);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,24,.92);
  border-bottom-color:var(--line-2);
  box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.nav{display:flex;align-items:center;gap:22px;padding:16px 0;transition:padding .25s ease;}
.site-header.is-scrolled .nav{padding:10px 0;}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;
  font-weight:700;font-size:19px;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  box-shadow:0 0 0 1px rgba(25,224,255,.45),0 6px 18px rgba(25,224,255,.25);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.logo-title{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.3px;}
.logo-sub{font-size:12px;color:var(--text-dim);letter-spacing:.5px;}
.nav-pills{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-pill{
  padding:9px 16px;
  border-radius:var(--pill);
  font-size:14.5px;
  color:var(--text-body);
  border:1px solid transparent;
  transition:all .2s ease;
  white-space:nowrap;
}
.nav-pill:hover{color:var(--cyan);border-color:rgba(25,224,255,.35);background:rgba(25,224,255,.07);}
.nav-pill.is-active{
  color:var(--cyan);
  border-color:rgba(25,224,255,.5);
  background:rgba(25,224,255,.10);
  box-shadow:0 0 0 1px rgba(25,224,255,.14) inset;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-2);
  color:var(--text);
  font-size:17px;
  transition:all .2s ease;
}
.nav-toggle:hover{border-color:rgba(25,224,255,.5);color:var(--cyan);}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--pill);
  font-weight:600;
  padding:13px 26px;
  font-size:15px;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 32px;font-size:16px;}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,224,255,.55),0 12px 30px rgba(25,224,255,.35);}
.btn-ghost{
  color:var(--text);
  border-color:var(--line-2);
  background:rgba(255,255,255,.03);
}
.btn-ghost:hover{color:var(--cyan);border-color:rgba(25,224,255,.5);background:rgba(25,224,255,.08);transform:translateY(-1px);}
.btn-magenta{
  color:#fff;
  background:linear-gradient(135deg,var(--magenta),#FF7DB4);
  box-shadow:0 0 0 1px rgba(255,61,139,.4),0 8px 24px rgba(255,61,139,.25);
}
.btn-magenta:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,61,139,.55),0 12px 30px rgba(255,61,139,.35);}

/* ===== Section base ===== */
.section{padding:var(--sec) 0;position:relative;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin:0 auto 0;text-align:center;}
.section-head.left{text-align:left;margin-left:0;max-width:720px;}
.section-title{font-size:clamp(22px,3vw,34px);letter-spacing:.3px;}
.section-desc{margin-top:14px;color:var(--text-dim);font-size:15.5px;line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--pill);
  font-size:13px;color:var(--cyan);
  border:1px solid rgba(25,224,255,.35);
  background:rgba(25,224,255,.08);
  margin-bottom:18px;
}

/* ===== Category hero ===== */
.cat-hero{
  position:relative;
  padding:72px 0 84px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.32;
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,14,24,.96) 0%,rgba(10,14,24,.82) 46%,rgba(10,14,24,.55) 100%);
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.crumbs{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--text-dim);margin-bottom:20px;}
.crumbs a:hover{color:var(--cyan);}
.crumbs span{color:#47536b;}
.cat-hero h1{font-size:clamp(28px,4.2vw,46px);line-height:1.28;}
.cat-hero-sub{margin-top:18px;font-size:16.5px;color:var(--text-body);max-width:600px;}
.cat-hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:14px;color:var(--text-dim);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--cyan);font-size:13px;}
.cat-hero-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line-2);}
.cat-hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:4/3;}
.cat-hero-media::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:34%;
  background:linear-gradient(0deg,rgba(25,224,255,.22),transparent);
  pointer-events:none;
}
.media-tag{
  position:absolute;left:18px;bottom:18px;
  display:flex;align-items:center;gap:9px;
  padding:9px 16px;border-radius:var(--pill);
  font-size:13px;color:var(--text);
  background:rgba(10,14,24,.72);
  border:1px solid rgba(25,224,255,.35);
  backdrop-filter:blur(8px);
}
.media-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}

/* ===== Stats strip ===== */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{background:var(--bg-2);padding:30px 24px;text-align:center;}
.stat-num{font-size:clamp(20px,2.6vw,28px);font-weight:700;color:var(--cyan);letter-spacing:.5px;}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--text-dim);}

/* ===== Steps ===== */
.steps{display:flex;flex-direction:column;gap:18px;max-width:940px;margin:52px auto 0;}
.step{
  display:grid;
  grid-template-columns:62px 1fr;
  gap:24px;
  padding:28px 30px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.step:hover{transform:translateY(-2px);border-color:rgba(25,224,255,.35);background:var(--panel-2);}
.step-num{
  width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  font-weight:700;font-size:20px;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  box-shadow:0 6px 18px rgba(25,224,255,.22);
}
.step h3{font-size:clamp(18px,2.2vw,22px);}
.step p{margin-top:10px;font-size:15.5px;color:var(--text-body);}
.step-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--pill);
  font-size:12.5px;color:var(--text-body);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
}

/* ===== Resource cards ===== */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:52px;}
.res-card{
  background:var(--panel-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 26px;
  display:flex;flex-direction:column;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.res-card:hover{transform:translateY(-3px);border-color:rgba(25,224,255,.4);box-shadow:0 14px 34px rgba(0,0,0,.4);}
.res-icon{
  width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;font-size:19px;
  color:var(--cyan);
  background:rgba(25,224,255,.10);
  border:1px solid rgba(25,224,255,.28);
  margin-bottom:18px;
}
.res-card h3{font-size:18.5px;}
.res-card p{margin-top:10px;font-size:14.5px;color:var(--text-dim);line-height:1.85;}
.res-list{margin-top:18px;display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--text-body);}
.res-list li{display:flex;gap:9px;align-items:flex-start;}
.res-list i{color:var(--cyan);font-size:12px;margin-top:7px;}
.res-badge{
  align-self:flex-start;margin-bottom:14px;
  padding:4px 12px;border-radius:var(--pill);
  font-size:12px;color:var(--cyan);
  border:1px solid rgba(25,224,255,.35);
  background:rgba(25,224,255,.08);
}
.res-badge.pink{color:var(--magenta);border-color:rgba(255,61,139,.38);background:rgba(255,61,139,.10);}

/* ===== Compare ===== */
.compare{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:52px;
}
.compare-card{
  background:var(--panel);
  border:1px solid var(--line-2);
  border-radius:var(--radius);
  padding:32px 28px;
  position:relative;
  transition:transform .2s ease,border-color .2s ease;
}
.compare-card:hover{transform:translateY(-3px);border-color:rgba(25,224,255,.4);}
.compare-card.is-featured{
  border-color:rgba(25,224,255,.55);
  box-shadow:var(--glow);
  background:var(--panel-2);
}
.compare-card.is-featured::before{
  content:"常用";
  position:absolute;top:-13px;right:24px;
  padding:4px 14px;border-radius:var(--pill);
  font-size:12px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
}
.compare-card h3{font-size:21px;}
.compare-sub{margin-top:8px;font-size:13.5px;color:var(--text-dim);}
.compare-rows{margin-top:22px;display:flex;flex-direction:column;gap:0;}
.compare-row{
  display:flex;justify-content:space-between;gap:14px;
  padding:13px 0;font-size:14.5px;
  border-bottom:1px dashed var(--line-2);
}
.compare-row:last-child{border-bottom:none;}
.compare-row .k{color:var(--text-dim);}
.compare-row .v{color:var(--text);text-align:right;}
.compare-card .btn{width:100%;margin-top:22px;}

/* ===== Timeline / notes ===== */
.notes-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-top:16px;}
.notes-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--shadow);}
.notes-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.notes-body p{margin-top:16px;font-size:15.5px;color:var(--text-body);}
.notes-body h2{font-size:clamp(22px,3vw,30px);}
.notes-points{display:flex;flex-direction:column;gap:16px;margin-top:26px;}
.notes-points li{display:grid;grid-template-columns:40px 1fr;gap:16px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(255,255,255,.02);transition:border-color .2s ease;}
.notes-points li:hover{border-color:rgba(25,224,255,.35);}
.notes-points .n-ico{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;color:var(--cyan);background:rgba(25,224,255,.10);border:1px solid rgba(25,224,255,.25);font-size:15px;}
.notes-points h4{font-size:16px;}
.notes-points p{margin-top:6px;font-size:14px;color:var(--text-dim);}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:52px;align-items:start;}
.faq-col{display:flex;flex-direction:column;gap:16px;}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:rgba(25,224,255,.42);background:var(--panel-2);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .bar{width:4px;height:18px;border-radius:2px;background:var(--cyan);flex-shrink:0;}
.faq-q .ico{margin-left:auto;color:var(--cyan);font-size:14px;transition:transform .25s ease;flex-shrink:0;}
.faq-item.is-open .faq-q .ico{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .25s ease,padding .25s ease;
  padding:0 22px;
}
.faq-item.is-open .faq-a{max-height:420px;padding:0 22px 20px;}
.faq-a p{font-size:14.8px;color:var(--text-body);line-height:1.9;}

/* ===== CTA band ===== */
.cta-band{
  position:relative;
  border-radius:20px;
  border:1px solid rgba(25,224,255,.28);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(255,255,255,.03) 0 1px, transparent 1px 12px);
  pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,224,255,.20),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);position:relative;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-body);max-width:640px;position:relative;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;}

/* ===== Footer ===== */
.site-footer{
  background:#080B14;
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;}
.footer-brand .logo{margin-bottom:20px;}
.footer-brand p{font-size:14.5px;color:var(--text-dim);max-width:340px;line-height:1.9;}
.footer-col h4{font-size:15px;margin-bottom:20px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14.5px;color:var(--text-dim);transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:var(--cyan);padding-left:4px;}
.footer-contact li{display:flex;gap:11px;font-size:14.5px;color:var(--text-dim);line-height:1.8;}
.footer-contact i{color:var(--cyan);font-size:14px;margin-top:5px;}
.footer-bottom{
  margin-top:56px;
  padding:24px 0;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-dim);
}
.fb-links{display:flex;gap:22px;}
.fb-links a:hover{color:var(--cyan);}

/* ===== Mobile floating CTA ===== */
.mobile-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(10,14,24,.94);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--line-2);
  gap:12px;
}
.mobile-cta .btn{flex:1;padding:13px 12px;font-size:14.5px;min-height:44px;}

/* ===== Responsive ===== */
@media (max-width:1199px){
  :root{--sec:80px;}
  .nav-pills{gap:6px;}
  .nav-pill{padding:8px 13px;font-size:14px;}
  .res-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .footer-col:last-child{grid-column:span 3;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:36px;}
  .cat-hero-media{order:-1;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .compare{grid-template-columns:1fr;}
  .notes-grid{grid-template-columns:1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:span 2;}
  .nav-pills{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(86vw,360px);
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding:96px 22px 32px;
    background:rgba(9,12,22,.98);
    backdrop-filter:blur(14px);
    border-left:1px solid var(--line-2);
    transform:translateX(102%);
    transition:transform .3s ease;
    margin-left:0;
    overflow-y:auto;
  }
  .nav.nav-open .nav-pills{transform:translateX(0);}
  .nav-pill{padding:15px 18px;font-size:16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(255,255,255,.03);text-align:center;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-actions .btn-ghost{display:none;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 18px;}
  body{font-size:15.5px;}
  .logo-sub{display:none;}
  .cat-hero{padding:44px 0 56px;}
  .res-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .step{grid-template-columns:1fr;gap:16px;padding:24px 22px;}
  .step-num{width:48px;height:48px;font-size:18px;border-radius:14px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;text-align:left;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col:last-child{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-cta{display:flex;}
  .site-footer{padding-bottom:86px;}
  .hero-meta{gap:14px;font-size:13.5px;}
}
@media (max-width:480px){
  .logo-title{font-size:15px;}
  .nav{padding:12px 0;}
  .stat{padding:22px 14px;}
  .btn{padding:12px 20px;}
  .btn-lg{padding:14px 22px;font-size:15px;}
  .hero-meta{flex-direction:column;gap:10px;}
}

/* roulang page: category4 */
:root{
  --bg:#0A0E18;
  --bg-2:#0D1220;
  --panel:#111827;
  --panel-2:#131A2A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#C9D1E1;
  --text-strong:#EAF1FF;
  --muted:#7D8AA5;
  --cyan:#19E0FF;
  --cyan-2:#2BD7FF;
  --magenta:#FF3D8B;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-soft:0 6px 18px rgba(0,0,0,.25);
  --glow:0 0 0 1px rgba(25,224,255,.4), 0 8px 24px rgba(25,224,255,.25);
  --glow-magenta:0 0 0 1px rgba(255,61,139,.38), 0 8px 22px rgba(255,61,139,.22);
  --space-section:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 82% -6%, rgba(25,224,255,.10), transparent 65%),
    radial-gradient(560px 380px at 4% 22%, rgba(255,61,139,.07), transparent 68%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px) 0 0/28px 28px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-strong);line-height:1.35;font-weight:700}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(25,224,255,.28);color:#fff}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.section{padding:var(--space-section) 0;position:relative;z-index:1}
.section-tight{padding:64px 0}
.section-alt{background:linear-gradient(180deg, rgba(19,26,42,.55), rgba(10,14,24,0))}
.section-head{max-width:820px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--cyan);
  border:1px solid rgba(25,224,255,.34);
  background:rgba(25,224,255,.08);
  border-radius:var(--radius-pill);
  padding:5px 14px;
  margin-bottom:18px;
}
.section-head h2{font-size:clamp(22px,3vw,34px);margin-bottom:14px}
.section-head p{color:var(--muted);max-width:760px;margin-bottom:0}
.section-head.center p{margin-left:auto;margin-right:auto}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  background:rgba(10,14,24,.55);
}
.site-header.is-scrolled{
  background:rgba(10,14,24,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:76px;
  padding:12px 0;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .nav{min-height:64px}
.logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
  border-radius:12px;
  font-size:20px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),#7CF0FF 60%,#B9F7FF);
  box-shadow:0 0 0 1px rgba(25,224,255,.45),0 8px 22px rgba(25,224,255,.22);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-title{font-size:16px;font-weight:700;color:var(--text-strong);letter-spacing:.01em}
.logo-sub{font-size:12px;color:var(--muted)}
.nav-pills{display:flex;align-items:center;gap:8px;margin-left:6px;flex:1 1 auto}
.nav-pill{
  display:inline-flex;align-items:center;
  padding:8px 15px;
  font-size:14px;
  color:var(--text);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.03);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-pill:hover{color:var(--text-strong);border-color:rgba(25,224,255,.42);background:rgba(25,224,255,.08);transform:translateY(-1px)}
.nav-pill.is-active{color:var(--cyan);border-color:rgba(25,224,255,.55);background:rgba(25,224,255,.12);box-shadow:0 0 0 1px rgba(25,224,255,.18) inset}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-strong);
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:rgba(25,224,255,.5);background:rgba(25,224,255,.1)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px}
.btn-primary{
  background:linear-gradient(135deg,#19E0FF,#57E9FF);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,224,255,.55),0 12px 30px rgba(25,224,255,.34)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  color:var(--text-strong);
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:rgba(25,224,255,.5);color:var(--cyan);background:rgba(25,224,255,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-magenta{
  background:linear-gradient(135deg,#FF3D8B,#FF74AE);
  color:#210513;
  box-shadow:var(--glow-magenta);
}
.btn-magenta:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-magenta:active{transform:translateY(1px)}
.btn-block{width:100%}

/* ===== 标签 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;
  padding:3px 11px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(25,224,255,.34);
  color:var(--cyan);
  background:rgba(25,224,255,.08);
  line-height:1.7;
}
.tag-magenta{border-color:rgba(255,61,139,.38);color:#FF7BB1;background:rgba(255,61,139,.1)}
.tag-muted{border-color:var(--line-strong);color:var(--muted);background:rgba(255,255,255,.04)}

/* ===== 内页 Hero ===== */
.page-hero{
  position:relative;
  padding:72px 0 84px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(100deg, rgba(10,14,24,.94) 0%, rgba(10,14,24,.78) 46%, rgba(10,14,24,.5) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(25,224,255,.20), transparent 66%);
  pointer-events:none;
}
.hero-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.breadcrumb{
  display:flex;align-items:center;gap:9px;
  font-size:13px;color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span:last-child{color:var(--text)}
.page-hero h1{
  font-size:clamp(28px,4.2vw,48px);
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;
  color:var(--text);
  max-width:640px;
  margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--muted)}
.hero-badges li{display:inline-flex;align-items:center;gap:8px}
.hero-badges i{color:var(--cyan);font-size:12px}
.hero-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--panel-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-media::after{
  content:"";
  position:absolute;inset:auto 0 0 0;height:42%;
  background:linear-gradient(180deg, rgba(10,14,24,0), rgba(10,14,24,.78));
  pointer-events:none;
}
.hero-float{
  position:absolute;
  left:18px;bottom:18px;right:18px;
  z-index:2;
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(13,18,32,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.hero-float .dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(25,224,255,.16);
  flex:0 0 auto;
}
.hero-float span{font-size:13.5px;color:var(--text)}

/* ===== 横向卡带 ===== */
.rail-tools{display:flex;justify-content:flex-end;gap:10px;margin-bottom:16px}
.rail-btn{
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text-strong);
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.rail-btn:hover{border-color:rgba(25,224,255,.5);color:var(--cyan);background:rgba(25,224,255,.1)}
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:999px}
.rail::-webkit-scrollbar-thumb{background:rgba(25,224,255,.36);border-radius:999px}
.rail-card{
  flex:0 0 322px;
  scroll-snap-align:start;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  padding:24px 22px;
  box-shadow:var(--shadow-soft);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.rail-card:hover{transform:translateY(-3px);border-color:rgba(25,224,255,.42);box-shadow:0 14px 34px rgba(0,0,0,.4)}
.rail-card .idx{
  font-size:12.5px;color:var(--muted);letter-spacing:.08em;margin-bottom:12px;display:block;
}
.rail-card h3{font-size:19px;margin-bottom:10px}
.rail-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.rail-card .fix{
  display:flex;gap:9px;align-items:flex-start;
  font-size:14px;color:var(--text);
  padding-top:14px;border-top:1px dashed var(--line);
}
.rail-card .fix i{color:var(--cyan);margin-top:5px;font-size:12px}

/* ===== 指标条 ===== */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.metric{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(19,26,42,.9), rgba(17,24,39,.6));
  padding:26px 22px;
  transition:border-color .22s ease,transform .22s ease;
}
.metric:hover{border-color:rgba(25,224,255,.35);transform:translateY(-2px)}
.metric .m-label{font-size:13.5px;color:var(--muted);margin-bottom:8px}
.metric .m-value{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  color:var(--text-strong);
  letter-spacing:-.01em;
  margin-bottom:8px;
}
.metric .m-value em{font-style:normal;font-size:14px;color:var(--cyan);margin-left:4px}
.metric .m-note{font-size:13px;color:var(--muted);line-height:1.7}

/* ===== 排查清单 ===== */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.check-card{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel-2);
  padding:28px 26px;
}
.check-card h3{font-size:19px;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.check-card h3 i{color:var(--cyan);font-size:16px}
.check-card .c-sub{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.check-list li{
  display:flex;gap:11px;align-items:flex-start;
  padding:11px 0;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:14.5px;
}
.check-list li:first-child{border-top:0}
.check-list li i{color:var(--cyan);font-size:13px;margin-top:6px;flex:0 0 auto}
.check-list li strong{color:var(--text-strong);font-weight:600}

/* ===== 对比 ===== */
.compare{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
}
.compare-head,
.compare-row{
  display:grid;
  grid-template-columns:.8fr 1.1fr 1.1fr;
  gap:0;
}
.compare-head{
  background:rgba(255,255,255,.04);
  border-bottom:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.compare-head > div{padding:14px 22px}
.compare-row{border-bottom:1px solid rgba(255,255,255,.06)}
.compare-row:last-child{border-bottom:0}
.compare-row > div{padding:22px}
.compare-label{font-size:15px;color:var(--text-strong);font-weight:600;display:flex;align-items:center}
.compare-cell{border-left:1px solid rgba(255,255,255,.06)}
.cmp-txt{font-size:13.5px;color:var(--muted);display:block;margin-bottom:12px;line-height:1.7}
.bar{
  display:block;
  position:relative;
  height:8px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.bar::after{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:var(--v,60%);
  border-radius:999px;
  background:linear-gradient(90deg, rgba(255,61,139,.85), rgba(255,61,139,.45));
}
.compare-cell.after .bar::after{background:linear-gradient(90deg, rgba(25,224,255,.95), rgba(25,224,255,.5))}
.bar.bar-good::after{background:linear-gradient(90deg,#19E0FF,#7CF0FF)}
.bar.bar-warn::after{background:linear-gradient(90deg,#FF3D8B,#FF8CBB)}

/* ===== 场景交替 ===== */
.scene{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.scene + .scene{margin-top:64px}
.scene.reverse .scene-media{order:2}
.scene-media{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--panel-2);
}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-copy h3{font-size:clamp(19px,2.2vw,24px);margin-bottom:14px}
.scene-copy p{color:var(--text);font-size:15px}
.scene-points{margin-top:18px;display:grid;gap:10px}
.scene-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted)}
.scene-points li i{color:var(--cyan);font-size:12px;margin-top:6px}

/* ===== FAQ ===== */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
  align-items:start;
}
.faq-col{display:grid;gap:14px}
.faq-item{
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:var(--panel-2);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:rgba(25,224,255,.4);background:rgba(19,26,42,.92)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:12px;
  padding:18px 20px;
  text-align:left;
  background:transparent;
  border:0;
  cursor:pointer;
  font-size:15.5px;
  font-weight:600;
  color:var(--text-strong);
}
.faq-q .mark{
  width:4px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),rgba(25,224,255,.25));
  flex:0 0 auto;
}
.faq-q .plus{
  margin-left:auto;
  color:var(--cyan);
  font-size:14px;
  transition:transform .2s ease;
}
.faq-item.is-open .plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a p{
  padding:0 20px 20px 36px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.9;
}

/* ===== CTA 通栏 ===== */
.cta-band{
  position:relative;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(95deg, rgba(10,14,24,.92), rgba(13,18,32,.72)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  padding:44px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;left:-80px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,61,139,.18), transparent 66%);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  position:relative;
  z-index:1;
}
.cta-inner h2{font-size:clamp(20px,2.4vw,28px);margin-bottom:8px}
.cta-inner p{color:var(--muted);font-size:14.5px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 表单 ===== */
.form-layout{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:44px;
  align-items:start;
}
.form-note h2{font-size:clamp(22px,2.8vw,32px);margin-bottom:14px}
.form-note p{color:var(--muted);font-size:15px}
.form-aside-points{margin-top:22px;display:grid;gap:12px}
.form-aside-points li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px}
.form-aside-points li i{color:var(--cyan);margin-top:6px;font-size:12px}
.form-card{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:30px 28px;
  box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--text)}
.field input,
.field select,
.field textarea{
  width:100%;
  background:rgba(10,14,24,.7);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  padding:12px 14px;
  font-size:14.5px;
  color:var(--text-strong);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:110px;resize:vertical}
.field input::placeholder,
.field textarea::placeholder{color:#61708B}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:rgba(25,224,255,.6);
  box-shadow:0 0 0 3px rgba(25,224,255,.14);
  background:rgba(10,14,24,.9);
}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-privacy{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-tip{
  margin-top:16px;
  font-size:13.5px;
  color:var(--cyan);
  display:none;
}
.form-tip.show{display:block}

/* ===== 页脚 ===== */
.site-footer{
  background:#080B13;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{font-size:14px;color:var(--muted);margin-top:18px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-strong)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--cyan);transform:translateX(2px)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.footer-contact li i{color:var(--cyan);margin-top:6px;font-size:12px}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--muted);margin:0}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{font-size:13px;color:var(--muted);transition:color .2s ease}
.fb-links a:hover{color:var(--cyan)}

/* ===== 移动端底部 CTA ===== */
.mobile-cta{
  position:fixed;
  left:12px;right:12px;bottom:12px;
  z-index:70;
  display:none;
  gap:10px;
  padding:10px;
  border-radius:var(--radius);
  border:1px solid var(--line-strong);
  background:rgba(13,18,32,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.mobile-cta .btn{flex:1 1 auto;min-height:46px}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--space-section:80px}
  .hero-inner{gap:40px}
  .rail-card{flex:0 0 300px}
}
@media (max-width:991px){
  :root{--space-section:72px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-pills{
    position:fixed;
    left:16px;right:16px;top:76px;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    padding:16px;
    border-radius:var(--radius);
    border:1px solid var(--line-strong);
    background:rgba(12,17,30,.97);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:var(--shadow);
    margin-left:0;
    max-height:70vh;
    overflow-y:auto;
    display:none;
  }
  .nav-pills.is-open{display:flex}
  .nav-pill{padding:14px 16px;font-size:15px;border-radius:12px;justify-content:center}
  .nav-actions .btn-ghost{display:none}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-media img{aspect-ratio:16/9}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:26px}
  .scene.reverse .scene-media{order:0}
  .faq-grid{grid-template-columns:1fr}
  .form-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr}
  .compare-label{padding-bottom:6px}
  .compare-cell{border-left:0;padding-top:0}
  .compare-cell + .compare-cell{padding-top:16px}
}
@media (max-width:767px){
  :root{--space-section:56px}
  .container{padding:0 16px}
  .page-hero{padding:48px 0 60px}
  .logo-title{font-size:15px}
  .logo-sub{display:none}
  .hero-cta .btn{flex:1 1 100%}
  .metrics{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .mobile-cta{display:flex}
  body{padding-bottom:80px}
  .rail-card{flex:0 0 268px;padding:20px 18px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:32px}
  .scene + .scene{margin-top:44px}
}
@media (max-width:480px){
  .page-hero h1{font-size:27px}
  .hero-sub{font-size:15.5px}
  .btn{font-size:14.5px;padding:0 18px}
  .compare-row > div{padding:18px 16px}
  .form-card{padding:22px 18px}
}