/* roulang page: index */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --panel:#101830;
  --panel-2:#0D1428;
  --glass:rgba(20,32,60,.55);
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glow:0 0 0 1px rgba(47,212,232,.45),0 10px 28px -8px rgba(47,212,232,.55);
  --r-xs:8px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 30px -14px rgba(0,0,0,.7);
  --sh-3:0 28px 64px -24px rgba(0,0,0,.85);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover,a:focus{color:#78E9F7;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:.2px;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.2;}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28;}
h3{font-size:20px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:none;box-shadow:var(--glow);border-radius:var(--r-sm);}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.mono{font-family:var(--mono);letter-spacing:.02em;}

/* ---------- 顶部状态条 ---------- */
.status-bar{
  background:linear-gradient(90deg,rgba(14,26,56,.9),rgba(5,7,15,.9));
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.status-bar .container{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:36px;flex-wrap:wrap;
}
.status-bar .dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--ok);margin-right:8px;vertical-align:middle;
  box-shadow:0 0 0 3px rgba(61,214,140,.16);
}
.status-bar .status-right{display:flex;gap:20px;flex-wrap:wrap;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,15,.86);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 rgba(47,212,232,.28),0 12px 30px -22px rgba(0,0,0,.9);
}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  min-height:76px;transition:min-height .25s ease;
}
.site-header.is-scrolled .nav-wrap{min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;flex-shrink:0;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(47,212,232,.18),rgba(124,108,255,.16));
  border:1px solid rgba(47,212,232,.35);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:.5px;}
.brand-text span{font-size:11px;color:var(--text-3);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:var(--r-xs);white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transition:transform .2s ease;box-shadow:0 0 12px rgba(47,212,232,.8);
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  display:flex;align-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  border-radius:999px;padding:0 14px;height:40px;width:230px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{
  border-color:var(--brand);background:rgba(47,212,232,.07);
  box-shadow:0 0 0 4px rgba(47,212,232,.13);
}
.nav-search svg{width:16px;height:16px;flex-shrink:0;color:var(--text-3);}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  padding:0 0 0 8px;font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;transition:.2s;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;
  background:rgba(9,14,30,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  padding:12px 24px 22px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;padding:12px 4px;color:var(--text-2);font-size:15px;
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-child{border-bottom:0;}
.mobile-panel a.is-active{color:var(--brand);}
.mobile-panel .mobile-search{
  width:100%;margin:12px 0 6px;height:44px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
}
.mobile-panel .mobile-search input{
  width:100%;height:100%;background:transparent;border:0;outline:none;
  padding:0 18px;font-size:14px;color:var(--text);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04161B;box-shadow:var(--glow);
}
.btn-primary:hover,.btn-primary:focus{
  color:#04161B;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(47,212,232,.6),0 16px 34px -10px rgba(47,212,232,.7);
}
.btn-secondary{
  background:transparent;border-color:rgba(47,212,232,.6);color:var(--brand);
}
.btn-secondary:hover,.btn-secondary:focus{
  background:rgba(47,212,232,.08);color:var(--brand);transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--text-2);
}
.btn-ghost:hover,.btn-ghost:focus{
  color:var(--text);border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.04);
}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.4px;
}
.badge-nebula{background:rgba(124,108,255,.16);color:#B9B0FF;border:1px solid rgba(124,108,255,.3);}
.badge-brand{background:rgba(47,212,232,.13);color:var(--brand);border:1px solid rgba(47,212,232,.3);}
.badge-ok{background:rgba(61,214,140,.13);color:var(--ok);border:1px solid rgba(61,214,140,.28);}
.badge-accent{background:rgba(255,178,90,.13);color:var(--accent);border:1px solid rgba(255,178,90,.3);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;flex-wrap:wrap;
}
.section-head h2{margin-top:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:12px;letter-spacing:2px;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7;}
.section-lead{color:var(--text-2);font-size:15px;max-width:620px;margin-top:12px;}
.track-line{
  height:1px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(47,212,232,.5),transparent);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:88px 0 96px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1000px 520px at 18% 12%,rgba(14,26,56,.96),rgba(19,32,72,.7) 45%,rgba(5,7,15,.94) 78%),
    linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.96));
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 70%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 70%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero h1{margin:18px 0 20px;max-width:15em;}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),#93F0FA);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px;}
.trust-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  padding-top:26px;border-top:1px solid var(--line);
}
.trust-item span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.5px;}
.trust-item strong{
  display:block;font-family:var(--mono);font-size:22px;color:var(--text);margin-bottom:4px;
}
.trust-item strong i{font-style:normal;font-size:13px;color:var(--text-3);margin-left:2px;}

.glass-card{
  background:var(--glass);
  border:1px solid rgba(47,212,232,.22);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-3);
  padding:28px;
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.hero-card-head h3{font-size:16px;}
.hero-card-head .badge{font-size:11px;padding:3px 10px;}
.hero-metrics li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.1);
}
.hero-metrics li:last-child{border-bottom:0;padding-bottom:4px;}
.hero-metrics .label{font-size:14px;color:var(--text-2);}
.hero-metrics .value{font-family:var(--mono);font-size:26px;color:var(--brand);}
.hero-metrics .value.alt{color:var(--accent);}
.hero-metrics .value i{font-style:normal;font-size:13px;color:var(--text-3);margin-left:2px;}
.spark{margin-top:16px;}
.spark svg{width:100%;height:64px;display:block;overflow:visible;}
.spark .axis{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--text-3);margin-top:6px;}
.spark .ticks{display:flex;gap:5px;margin-top:10px;}
.spark .ticks i{display:block;width:2px;height:8px;background:rgba(255,255,255,.16);}
.spark .ticks i:nth-child(3n){height:14px;background:rgba(47,212,232,.5);}

/* ---------- 指标看板 ---------- */
.metrics-section{background:var(--bg-1);}
.metric-card{
  height:100%;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.metric-card:hover{
  transform:translateY(-2px);border-color:rgba(47,212,232,.45);box-shadow:var(--sh-2);
}
.metric-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.metric-icon{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,232,.1);border:1px solid rgba(47,212,232,.28);
}
.metric-icon svg{width:18px;height:18px;color:var(--brand);}
.metric-value{font-family:var(--mono);font-size:34px;line-height:1.1;color:var(--text);}
.metric-value i{font-style:normal;font-size:15px;color:var(--text-3);margin-left:3px;}
.metric-label{font-size:14px;color:var(--text-2);margin-top:8px;}
.metric-bar{height:4px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:18px;overflow:hidden;}
.metric-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--nexus,#7C6CFF));}
.metric-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:12px;color:var(--text-3);}
.metric-foot .up{color:var(--ok);font-family:var(--mono);}
.metric-foot .down{color:var(--accent);font-family:var(--mono);}

/* ---------- 服务矩阵 ---------- */
.matrix-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:stretch;}
.matrix-lead{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-2);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.matrix-lead:hover{border-color:rgba(47,212,232,.4);box-shadow:var(--sh-3);}
.matrix-lead .cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.matrix-lead .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.matrix-lead:hover .cover img{transform:scale(1.04);}
.matrix-lead .cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.05),rgba(5,7,15,.85));
}
.matrix-lead .body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.matrix-lead .body p{color:var(--text-2);font-size:15px;}
.check-list li{
  position:relative;padding-left:24px;font-size:14px;color:var(--text-2);margin-bottom:10px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(47,212,232,.7);
}
.matrix-side{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.mini-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.mini-card:hover{transform:translateY(-2px);border-color:rgba(47,212,232,.4);box-shadow:var(--sh-2);}
.mini-card h3{font-size:17px;}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.7;}
.mini-icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(124,108,255,.12);border:1px solid rgba(124,108,255,.3);
}
.mini-icon svg{width:19px;height:19px;color:#AFA5FF;}
.mini-card .text-link{margin-top:auto;}

/* ---------- 结果对比 ---------- */
.compare-section{background:var(--bg-1);}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;position:relative;}
.compare-grid::after{
  content:"";position:absolute;top:12px;bottom:12px;left:50%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.16),transparent);
  transform:translateX(-50%);
}
.compare-card{
  border-radius:var(--r-md);padding:28px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);
}
.compare-card.before{border-color:rgba(255,122,107,.28);}
.compare-card.after{border-color:rgba(47,212,232,.38);background:rgba(47,212,232,.04);}
.compare-card h3{font-size:17px;margin-bottom:6px;}
.compare-card .tag{margin-bottom:20px;display:inline-flex;}
.compare-card.before h3{color:#FFB7AD;}
.compare-card.after h3{color:var(--brand);}
.compare-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14px;color:var(--text-2);
}
.compare-row:last-child{border-bottom:0;}
.compare-row b{font-family:var(--mono);font-size:17px;font-weight:600;}
.compare-card.before .compare-row b{color:#FF9C8E;}
.compare-card.after .compare-row b{color:var(--accent);}

/* ---------- 内容动态 ---------- */
.news-section{position:relative;}
.news-grid{margin-top:8px;}
.news-card{
  height:100%;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;margin-bottom:24px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(47,212,232,.42);box-shadow:var(--sh-2);}
.news-cover{display:block;aspect-ratio:16/10;overflow:hidden;position:relative;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .news-cover img{transform:scale(1.05);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-title{font-size:17px;line-height:1.5;}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--brand);}
.news-summary{
  font-size:14px;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);
}
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line-strong);
  border-radius:var(--r-lg);background:rgba(255,255,255,.015);
}
.empty-state svg{width:52px;height:52px;margin:0 auto 18px;color:var(--brand);opacity:.85;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}

/* ---------- 角色场景 ---------- */
.role-list{border-top:1px solid var(--line);}
.role-item{
  display:grid;grid-template-columns:86px 1.1fr 1.6fr auto;gap:24px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.role-item:hover{background:rgba(255,255,255,.02);padding-left:10px;}
.role-item .no{font-family:var(--mono);font-size:22px;color:var(--text-3);}
.role-item h3{font-size:17px;}
.role-item p{margin:0;font-size:14px;color:var(--text-2);}
.role-item .badge{justify-self:end;}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-1);}
.faq-grid{display:grid;grid-template-columns:.9fr 1.5fr;gap:48px;align-items:start;}
.faq-aside p{color:var(--text-2);font-size:15px;margin-top:16px;}
.faq-contact{
  margin-top:26px;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--panel-2);
}
.faq-contact span{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px;letter-spacing:1px;}
.faq-contact b{font-family:var(--mono);font-size:16px;color:var(--brand);display:block;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item::before{
  content:"";position:absolute;left:-18px;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity .2s ease;
  box-shadow:0 0 12px rgba(47,212,232,.85);
}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;position:relative;
  border:1px solid rgba(47,212,232,.4);background:rgba(47,212,232,.08);
  transition:transform .2s ease,background .2s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:11px;height:1.5px;}
.faq-sign::after{width:1.5px;height:11px;transition:transform .2s ease;}
.faq-item.is-open .faq-sign{transform:rotate(180deg);background:rgba(47,212,232,.18);}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a p{padding:0 44px 22px 0;color:var(--text-2);font-size:15px;margin:0;}

/* ---------- 转化表单 ---------- */
.cta-section{padding:96px 0;}
.cta-card{
  display:grid;grid-template-columns:1fr 1.05fr;gap:0;
  background:var(--glass);border:1px solid rgba(47,212,232,.24);border-radius:var(--r-lg);
  overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-3);
}
.cta-left{padding:44px;border-right:1px solid var(--line);}
.cta-left h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px;}
.cta-left p{color:var(--text-2);font-size:15px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:16px;}
.cta-points li{display:flex;gap:12px;font-size:14px;color:var(--text-2);}
.cta-points i{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,232,.14);color:var(--brand);font-style:normal;font-size:12px;font-weight:700;
}
.cta-right{padding:44px;}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.4px;}
.form-row input,.form-row textarea{
  width:100%;background:rgba(5,9,20,.65);border:1px solid var(--line-strong);
  border-radius:var(--r-sm);padding:12px 14px;font-size:15px;color:var(--text);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:#5A6885;}
.form-row input:focus,.form-row textarea:focus{
  border-color:var(--brand);background:rgba(5,9,20,.85);
  box-shadow:0 0 0 4px rgba(47,212,232,.14);
}
.form-row textarea{resize:vertical;min-height:104px;}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-msg{
  display:none;margin-top:14px;font-size:13px;color:var(--ok);
  background:rgba(61,214,140,.1);border:1px solid rgba(61,214,140,.3);
  border-radius:var(--r-sm);padding:10px 14px;
}
.form-msg.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;border-top:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center top;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,31,.92),rgba(5,7,15,.99));
}
.footer-inner{position:relative;z-index:2;padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;}
.footer-brand b{font-size:16px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:1px;}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:34em;}
.footer-col li{margin-bottom:11px;}
.footer-col li a{font-size:14px;color:var(--text-2);}
.footer-col li a:hover{color:var(--brand);}
.footer-qr{
  width:104px;height:104px;border-radius:var(--r-sm);border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);display:flex;align-items:center;justify-content:center;
  margin-top:14px;
}
.footer-qr span{font-size:12px;color:var(--text-3);text-align:center;line-height:1.6;}
.footer-bottom{
  position:relative;z-index:2;margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{color:#5C6A88;}

.float-login{
  position:fixed;right:22px;bottom:22px;z-index:70;display:none;
  box-shadow:var(--glow);
}
.float-login.show{display:inline-flex;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .nav-search{width:180px;}
  .main-nav{gap:2px;}
  .nav-link{padding:8px 9px;font-size:14px;}
}
@media screen and (max-width:1024px){
  .section{padding:76px 0;}
  .hero{padding:72px 0 80px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .matrix-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .cta-card{grid-template-columns:1fr;}
  .cta-left{border-right:0;border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 64px;}
  .trust-row{grid-template-columns:repeat(2,1fr);gap:18px;}
  .matrix-side{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-grid::after{display:none;}
  .role-item{grid-template-columns:56px 1fr;gap:14px;row-gap:8px;}
  .role-item p{grid-column:1/-1;}
  .role-item .badge{justify-self:start;grid-column:1/-1;}
  .cta-left,.cta-right{padding:28px;}
  .section-head{margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-inner{padding:56px 0 26px;}
  .nav-wrap{min-height:64px;}
}
@media screen and (max-width:520px){
  body{font-size:15px;}
  .trust-row{grid-template-columns:1fr 1fr;}
  .hero-actions .btn{width:100%;}
  .status-bar .container{font-size:12px;gap:8px;}
  .status-bar .status-right{display:none;}
  .glass-card{padding:20px;}
  .metric-value{font-size:28px;}
  .float-login{right:14px;bottom:14px;}
}

/* roulang page: article */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --panel:#101830;
  --panel-2:#0C1428;
  --glass:rgba(20,32,60,.55);
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9C;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --glow:0 0 0 1px rgba(47,212,232,.45), 0 10px 28px -8px rgba(47,212,232,.55);
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 30px -16px rgba(0,0,0,.85);
  --sh-3:0 26px 60px -28px rgba(0,0,0,.95);
  --max:1200px;
  --read:820px;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;padding:0;background:var(--bg-0);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block;border-radius:12px}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#82E8F5;text-decoration:underline;text-underline-offset:4px}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.25;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(47,212,232,.3)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.4px}

/* 布局容器 */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:88px 0}
.section-sm{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,32px);position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 14px rgba(47,212,232,.7)}
.section-head .lead{color:var(--text-2);font-size:15px;max-width:640px}

/* 顶部状态条 */
.topbar{background:var(--bg-1);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;flex-wrap:wrap}
.topbar .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ok);margin-right:8px;box-shadow:0 0 10px rgba(61,214,140,.8);vertical-align:middle}
.topbar .mono{color:var(--text-2)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.86);border-bottom:1px solid var(--line);transition:height .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:rgba(6,9,20,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:rgba(47,212,232,.32);box-shadow:0 1px 0 rgba(47,212,232,.16),0 12px 30px -22px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{text-decoration:none;color:var(--text)}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(150deg,rgba(47,212,232,.18),rgba(124,108,255,.16));border:1px solid rgba(47,212,232,.35);box-shadow:0 0 18px -6px rgba(47,212,232,.7)}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;min-width:0}
.nav-link{position:relative;padding:10px 12px;color:var(--text-2);font-size:15px;border-radius:8px;white-space:nowrap}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);text-decoration:none}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.9)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-search{position:relative}
.nav-search input{width:210px;height:40px;padding:0 16px 0 38px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--text);outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{border-color:var(--brand);background:rgba(47,212,232,.08);box-shadow:0 0 0 3px rgba(47,212,232,.16)}
.nav-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:13px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--text);cursor:pointer}
.nav-toggle:hover{border-color:var(--brand)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.mobile-panel.is-open{display:block}
.mobile-panel .inner{padding:14px 24px 22px;display:grid;gap:6px}
.mobile-panel .nav-link{padding:12px 10px;border-radius:10px;font-size:16px}
.mobile-panel .nav-search input{width:100%}
.mobile-panel .panel-cta{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}
.mobile-mask{position:fixed;inset:0;background:rgba(3,5,12,.6);z-index:50;display:none}
.mobile-mask.is-open{display:block}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;text-decoration:none;white-space:nowrap}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:focus-visible{outline:none;box-shadow:var(--glow)}
.btn-primary{background:linear-gradient(180deg,var(--brand),var(--brand-deep));color:#04141A;box-shadow:var(--glow)}
.btn-primary:hover{color:#04141A;box-shadow:0 0 0 1px rgba(47,212,232,.6),0 16px 34px -10px rgba(47,212,232,.75)}
.btn-outline{background:transparent;border-color:rgba(47,212,232,.55);color:var(--brand)}
.btn-outline:hover{background:rgba(47,212,232,.08);color:#8FEDF9}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.08)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(4px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.3px}
.badge-nebula{background:rgba(124,108,255,.18);color:#B7AFFF;border:1px solid rgba(124,108,255,.35)}
.badge-brand{background:rgba(47,212,232,.14);color:var(--brand);border:1px solid rgba(47,212,232,.32)}
.badge-ok{background:rgba(61,214,140,.14);color:var(--ok);border:1px solid rgba(61,214,140,.3)}
.badge-accent{background:rgba(255,178,90,.14);color:var(--accent);border:1px solid rgba(255,178,90,.3)}

/* 文章头部 */
.article-hero{position:relative;padding:52px 0 44px;border-bottom:1px solid var(--line);overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(900px 420px at 12% -10%, rgba(47,212,232,.20), transparent 62%),
  radial-gradient(700px 380px at 88% 0%, rgba(124,108,255,.20), transparent 60%),
  linear-gradient(180deg,var(--bg-1),var(--bg-0) 78%);z-index:0}
.article-hero::after{content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:34px 34px;mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 80%)}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{font-size:clamp(26px,3.6vw,40px);line-height:1.28;margin:16px 0 18px;max-width:900px}
.meta-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:var(--text-3);font-size:13.5px}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--brand);font-size:12.5px}
.meta-row .mono{color:var(--text-2)}
.share-row{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-row a{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--line-2);color:var(--text-2);background:rgba(255,255,255,.03)}
.share-row a:hover{color:var(--brand);border-color:rgba(47,212,232,.5);text-decoration:none}

/* 文章主体布局 */
.article-section{padding:56px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:var(--read);font-size:16px;line-height:1.9;color:var(--text-2)}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:var(--text-2)}
.article-body > p:first-of-type{font-size:17.5px;color:var(--text);line-height:1.85}
.article-body h2{font-size:clamp(21px,2.4vw,26px);color:var(--text);margin-top:2em;position:relative;padding-left:16px;line-height:1.4}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.7)}
.article-body h3{font-size:19px;color:var(--text);margin-top:1.7em;font-weight:600}
.article-body strong{color:var(--text);font-weight:600}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(47,212,232,.35)}
.article-body a:hover{text-decoration:none;border-bottom-color:var(--brand)}
.article-body ul,.article-body ol{padding-left:2px;display:grid;gap:.6em}
.article-body ul li{position:relative;padding-left:22px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(47,212,232,.6)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;counter-increment:li}
.article-body ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.15em;font-family:var(--mono);font-size:13px;color:var(--accent)}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-left:3px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--text)}
.article-body blockquote p{color:var(--text)}
.article-body table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;font-size:15px;display:table}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body th{background:rgba(47,212,232,.07);color:var(--text);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body img{border-radius:12px;box-shadow:var(--sh-2);margin:1.4em 0 .6em}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body pre{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-md);padding:18px;overflow-x:auto;font-family:var(--mono);font-size:14px;color:var(--text-2)}
.article-body code{font-family:var(--mono);font-size:.92em;background:rgba(47,212,232,.1);color:#9FEAF6;padding:2px 6px;border-radius:6px}
.article-body hr{border:none;height:1px;background:linear-gradient(90deg,transparent,rgba(47,212,232,.4),transparent);margin:2.2em 0}
.empty-state{max-width:var(--read);padding:56px 32px;text-align:center;background:var(--panel);border:1px dashed var(--line-2);border-radius:var(--r-lg)}
.empty-state .star{width:54px;height:54px;margin:0 auto 18px;display:grid;place-items:center;border-radius:16px;border:1px solid rgba(47,212,232,.35);background:rgba(47,212,232,.08)}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);margin-bottom:22px}

/* 侧栏 */
.article-side{display:grid;gap:20px;position:sticky;top:96px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1)}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:13px}
.toc-list{display:grid;gap:4px}
.toc-list a{display:block;padding:8px 10px;border-radius:8px;color:var(--text-2);font-size:14px;border-left:2px solid transparent}
.toc-list a:hover{background:rgba(255,255,255,.04);color:var(--text);text-decoration:none;border-left-color:var(--brand)}
.side-card .note{color:var(--text-3);font-size:13px}
.rel-list{display:grid;gap:14px}
.rel-item{display:grid;gap:5px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.rel-item:last-child{border-bottom:none;padding-bottom:0}
.rel-item a{color:var(--text);font-size:14.5px;font-weight:600;line-height:1.55}
.rel-item a:hover{color:var(--brand);text-decoration:none}
.rel-item .date{font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
.side-cta{background:linear-gradient(160deg,rgba(47,212,232,.14),rgba(124,108,255,.12));border:1px solid rgba(47,212,232,.3)}
.side-cta p{color:var(--text-2);font-size:14px;margin-bottom:14px}

/* 快捷入口条 */
.strip{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:44px 0}
.strip-item{display:flex;gap:14px;align-items:flex-start}
.strip-item .ico{width:44px;height:44px;flex:0 0 44px;border-radius:14px;display:grid;place-items:center;background:rgba(47,212,232,.1);border:1px solid rgba(47,212,232,.3);color:var(--brand)}
.strip-item h3{font-size:16px;margin-bottom:6px}
.strip-item p{color:var(--text-2);font-size:14.5px;line-height:1.7}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.post-nav a{display:block;padding:20px 22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.post-nav a:hover{transform:translateY(-2px);border-color:rgba(47,212,232,.45);box-shadow:var(--sh-2);text-decoration:none}
.post-nav .lbl{font-size:12.5px;color:var(--text-3);margin-bottom:8px;display:block}
.post-nav .ttl{font-size:15.5px;color:var(--text);font-weight:600;line-height:1.5}
.post-nav .next{text-align:right}
.back-row{margin-top:28px;display:flex;justify-content:center}

/* 转化卡 */
.cta-card{margin-top:64px;border-radius:var(--r-lg);padding:40px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(47,212,232,.3);display:grid;grid-template-columns:1.2fr auto;gap:28px;align-items:center;box-shadow:var(--sh-3)}
.cta-card h3{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px}
.cta-card p{color:var(--text-2);font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:linear-gradient(180deg,var(--bg-1),var(--bg-0));border-top:1px solid var(--line);padding:64px 0 26px;position:relative;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0 0 auto;height:220px;background:radial-gradient(700px 260px at 20% 0%,rgba(47,212,232,.14),transparent 65%),radial-gradient(600px 240px at 85% 0%,rgba(124,108,255,.14),transparent 65%);pointer-events:none}
.footer-inner{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand b{font-size:17px}
.footer-col p{color:var(--text-3);font-size:14px;line-height:1.75}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.6px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{color:var(--text-2);font-size:14px}
.footer-col ul a:hover{color:var(--brand);text-decoration:none}
.footer-qr{margin-top:14px;width:104px;height:104px;border-radius:14px;border:1px dashed rgba(47,212,232,.4);background:rgba(47,212,232,.06);display:grid;place-items:center;text-align:center;font-size:12px;color:var(--text-3);line-height:1.5}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.float-login{display:none;position:fixed;right:16px;bottom:16px;z-index:70;height:48px;padding:0 20px;border-radius:999px;background:linear-gradient(180deg,var(--brand),var(--brand-deep));color:#04141A;font-weight:700;align-items:center;gap:8px;box-shadow:var(--glow)}
.float-login:hover{color:#04141A;text-decoration:none}

/* 响应式 */
@media (max-width:1180px){
  .main-nav{gap:0}
  .nav-link{padding:10px 9px;font-size:14px}
  .nav-search input{width:170px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:36px}
  .article-side{position:static;grid-template-columns:repeat(2,1fr)}
  .strip-grid{grid-template-columns:1fr;gap:20px;padding:36px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-card{grid-template-columns:1fr;padding:32px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn-ghost{display:none}
  .header-inner{height:66px;gap:14px}
  .brand-text{font-size:16px}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .section-sm{padding:44px 0}
  .article-hero{padding:36px 0 32px}
  .article-section{padding:36px 0 60px}
  .article-side{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav .next{text-align:left}
  .share-row{margin-left:0;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .float-login{display:inline-flex}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-mark{width:30px;height:30px;border-radius:10px}
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .article-hero h1{font-size:23px}
  .btn{height:44px;padding:0 16px;font-size:14px}
  .cta-card{padding:24px}
  .cta-actions .btn{width:100%}
  .empty-state{padding:36px 20px}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --bg-radial-a:#0E1A38;
  --bg-radial-b:#132048;
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --panel:#101830;
  --glass:rgba(20,32,60,.55);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9C;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --glow:0 0 0 1px rgba(47,212,232,.45),0 10px 28px -8px rgba(47,212,232,.55);
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 10px 24px -12px rgba(0,0,0,.75);
  --sh-3:0 24px 60px -24px rgba(0,0,0,.85);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,text-underline-offset .18s ease;}
a:hover{color:#7FEBF8;text-decoration:underline;text-underline-offset:4px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1260px;}}

/* ---------- 顶部状态条 ---------- */
.status-bar{background:#040610;border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3);}
.status-bar .container{display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:34px;flex-wrap:wrap;}
.status-bar b{color:var(--text-2);font-weight:500;}
.status-bar .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ok);margin-right:8px;vertical-align:middle;box-shadow:0 0 10px rgba(61,214,140,.8);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.86);border-bottom:1px solid var(--line);transition:height .2s ease,background-color .2s ease,backdrop-filter .2s ease;}
.site-header.is-scrolled{background:rgba(5,7,15,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:rgba(47,212,232,.35);box-shadow:0 1px 0 rgba(47,212,232,.18),0 14px 30px -22px rgba(47,212,232,.5);}
.header-inner{display:flex;align-items:center;gap:24px;min-height:76px;transition:min-height .2s ease;}
.site-header.is-scrolled .header-inner{min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(47,212,232,.28),rgba(124,108,255,.12) 60%,transparent 75%);border:1px solid rgba(47,212,232,.35);}
.brand-mark svg{width:18px;height:18px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.5px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;min-width:0;}
.nav-link{position:relative;padding:10px 12px;font-size:15px;color:var(--text-2);border-radius:8px;white-space:nowrap;}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);text-decoration:none;}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.9);}
.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-search{position:relative;}
.nav-search input{width:190px;height:38px;padding:0 16px 0 38px;border-radius:var(--r-pill);background:#0B1224;border:1px solid var(--line-strong);color:var(--text);font-size:14px;outline:none;transition:border-color .18s ease,box-shadow .18s ease,width .2s ease;}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,232,.18);}
.nav-search .s-ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;opacity:.65;}
.nav-toggle{display:none;width:40px;height:38px;border-radius:10px;border:1px solid var(--line-strong);background:#0B1224;align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--text);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--text);}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* 移动端抽屉 */
.nav-drawer{position:fixed;inset:0;z-index:80;display:none;}
.nav-drawer.is-open{display:block;}
.nav-drawer .mask{position:absolute;inset:0;background:rgba(3,5,12,.72);backdrop-filter:blur(4px);}
.nav-drawer .panel{position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-left:1px solid rgba(47,212,232,.25);padding:24px;overflow:auto;}
.nav-drawer .panel h4{font-size:13px;color:var(--text-3);font-weight:500;letter-spacing:1px;margin-bottom:12px;}
.nav-drawer .panel a.d-link{display:block;padding:13px 14px;border-radius:12px;color:var(--text-2);font-size:16px;margin-bottom:6px;border:1px solid transparent;}
.nav-drawer .panel a.d-link:hover{background:rgba(47,212,232,.08);border-color:rgba(47,212,232,.3);color:var(--text);text-decoration:none;}
.nav-drawer .panel a.d-link.is-active{color:var(--brand);border-color:rgba(47,212,232,.4);background:rgba(47,212,232,.08);}
.nav-drawer .close-x{position:absolute;top:18px;right:20px;width:36px;height:36px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--text-2);cursor:pointer;font-size:18px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,212,232,.35),var(--glow);}
.btn-primary{background:linear-gradient(180deg,var(--brand),var(--brand-deep));color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{color:#04121A;box-shadow:0 0 0 1px rgba(47,212,232,.6),0 16px 34px -12px rgba(47,212,232,.75);}
.btn-secondary{background:transparent;border-color:rgba(47,212,232,.55);color:var(--brand);}
.btn-secondary:hover{background:rgba(47,212,232,.08);color:#8DF0FB;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-2);}
.btn-ghost:hover{border-color:rgba(255,255,255,.3);color:var(--text);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.text-link .arw{transition:transform .18s ease;}
.text-link:hover{text-decoration:none;}
.text-link:hover .arw{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:22px 0 0;font-size:13.5px;color:var(--text-3);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--text-2);}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;margin-top:18px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#081026;}
.cat-hero .bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center;opacity:.42;}
.cat-hero .bg::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 100% at 12% 10%,rgba(14,26,56,.72),rgba(5,7,15,.94) 70%),linear-gradient(180deg,rgba(5,7,15,.35),rgba(5,7,15,.9));}
.cat-hero .stars{position:absolute;inset:0;background-image:radial-gradient(1.4px 1.4px at 18% 26%,rgba(255,255,255,.55),transparent 60%),radial-gradient(1.2px 1.2px at 62% 18%,rgba(255,255,255,.4),transparent 60%),radial-gradient(1.6px 1.6px at 82% 62%,rgba(255,255,255,.35),transparent 60%),radial-gradient(1.2px 1.2px at 36% 78%,rgba(255,255,255,.3),transparent 60%);opacity:.7;}
.cat-hero .inner{position:relative;padding:56px 48px 52px;max-width:880px;}
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 14px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.4px;background:rgba(124,108,255,.18);color:#B9B1FF;border:1px solid rgba(124,108,255,.35);}
.cat-hero h1{font-size:clamp(28px,3.4vw,44px);margin:18px 0 16px;line-height:1.22;}
.cat-hero h1 .hl{color:var(--brand);}
.cat-hero .lead{color:var(--text-2);font-size:16.5px;line-height:1.85;max-width:760px;}
.cat-hero .meta-row{display:flex;flex-wrap:wrap;gap:26px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);}
.cat-hero .meta-row .m-i{display:flex;flex-direction:column;gap:4px;}
.cat-hero .meta-row .m-n{font-family:var(--mono);font-size:22px;color:var(--accent);font-weight:700;}
.cat-hero .meta-row .m-t{font-size:12.5px;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0 0;}
.section.loose{padding-top:104px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px;}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);position:relative;padding-left:16px;}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--brand-deep));}
.sec-head .sub{color:var(--text-3);font-size:14px;margin-top:8px;padding-left:16px;max-width:620px;}
.rail{border-top:1px solid transparent;border-image:linear-gradient(90deg,rgba(47,212,232,.6),rgba(124,108,255,.25),transparent) 1;margin-top:72px;}

/* ---------- 入口核对条 ---------- */
.check-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:12px;}
.check-strip .c-i{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);padding:20px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;}
.check-strip .c-i:hover{transform:translateY(-2px);border-color:rgba(47,212,232,.45);box-shadow:var(--sh-2);}
.check-strip .c-k{font-family:var(--mono);font-size:12px;color:var(--brand);letter-spacing:1px;}
.check-strip .c-t{font-size:15.5px;font-weight:600;margin:10px 0 6px;}
.check-strip .c-d{font-size:13.5px;color:var(--text-3);line-height:1.7;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-top:6px;}
.timeline::before{content:"";position:absolute;left:150px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,rgba(47,212,232,.75),rgba(124,108,255,.35) 55%,rgba(255,178,90,.35));}
.tl-item{display:grid;grid-template-columns:118px 1fr;column-gap:64px;position:relative;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-stamp{padding-top:26px;text-align:right;}
.tl-stamp .y{font-family:var(--mono);font-size:12.5px;color:var(--text-3);letter-spacing:1px;display:block;}
.tl-stamp .m{font-family:var(--mono);font-size:19px;color:var(--accent);font-weight:700;display:block;margin-top:2px;}
.tl-node{position:absolute;left:144px;top:32px;width:13px;height:13px;border-radius:50%;background:var(--bg-0);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(47,212,232,.12),0 0 16px rgba(47,212,232,.6);}
.tl-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;display:grid;grid-template-columns:230px 1fr;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;}
.tl-card:hover{transform:translateY(-2px);border-color:rgba(47,212,232,.4);box-shadow:var(--sh-2);}
.tl-card .thumb{position:relative;min-height:180px;background:#0B1224;}
.tl-card .thumb img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.tl-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,7,15,.15),rgba(16,24,48,.55));}
.tl-body{padding:26px 28px;}
.tl-body h3{font-size:19.5px;margin-bottom:10px;}
.tl-body h3 a{color:var(--text);}
.tl-body h3 a:hover{color:var(--brand);text-decoration:none;}
.tl-body p{color:var(--text-2);font-size:14.8px;line-height:1.8;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--r-pill);font-size:12.5px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line-strong);}
.tag.is-brand{color:#9BEEF8;background:rgba(47,212,232,.1);border-color:rgba(47,212,232,.32);}
.tl-foot{margin-top:18px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.tl-foot .date{font-size:12.5px;color:var(--text-3);font-family:var(--mono);}

/* ---------- 分页 ---------- */
.pager{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:56px;}
.pager a,.pager span{min-width:42px;height:42px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;border:1px solid var(--line-strong);color:var(--text-2);font-size:14px;font-family:var(--mono);background:#0B1224;}
.pager a:hover{border-color:rgba(47,212,232,.5);color:var(--brand);text-decoration:none;}
.pager .is-current{background:rgba(47,212,232,.12);border-color:rgba(47,212,232,.5);color:var(--brand);box-shadow:0 0 0 1px rgba(47,212,232,.25);}
.pager .disabled{opacity:.4;}

/* ---------- 相关分类 ---------- */
.rel-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.rel-cats a{display:block;padding:22px;border-radius:var(--r-md);background:linear-gradient(180deg,#111A33,#0C1428);border:1px solid var(--line);color:var(--text);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;}
.rel-cats a:hover{transform:translateY(-2px);border-color:rgba(124,108,255,.5);box-shadow:var(--sh-2);text-decoration:none;color:var(--text);}
.rel-cats .rc-k{font-family:var(--mono);font-size:12px;color:var(--nebula);letter-spacing:1px;}
.rel-cats .rc-t{font-size:16.5px;font-weight:600;margin:10px 0 8px;}
.rel-cats .rc-d{font-size:13.5px;color:var(--text-3);line-height:1.7;}

/* ---------- CTA ---------- */
.cta-card{margin-top:88px;position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid rgba(47,212,232,.28);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:48px;display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center;}
.cta-card::before{content:"";position:absolute;inset:0;background:radial-gradient(90% 120% at 8% 0%,rgba(47,212,232,.18),transparent 60%),radial-gradient(70% 100% at 100% 100%,rgba(255,178,90,.12),transparent 65%);pointer-events:none;}
.cta-card > *{position:relative;}
.cta-card h2{font-size:clamp(22px,2.3vw,30px);margin-bottom:14px;}
.cta-card p{color:var(--text-2);font-size:15px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-points{display:grid;gap:14px;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:14px;background:rgba(8,16,38,.6);border:1px solid var(--line);font-size:14.5px;color:var(--text-2);}
.cta-points .ic{flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.9);}
.cta-points b{color:var(--text);font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:linear-gradient(180deg,rgba(14,26,56,.55),rgba(5,7,15,.98) 55%);border-top:1px solid var(--line);}
.footer-inner{padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand b{font-size:16px;letter-spacing:.4px;}
.footer-col p{color:var(--text-3);font-size:13.8px;line-height:1.85;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;font-weight:600;letter-spacing:.5px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:var(--text-3);font-size:14px;}
.footer-col ul a:hover{color:var(--brand);}
.footer-qr{width:104px;height:104px;margin-top:16px;border-radius:14px;border:1px dashed var(--line-strong);background:repeating-linear-gradient(45deg,rgba(47,212,232,.08),rgba(47,212,232,.08) 6px,transparent 6px,transparent 12px);display:flex;align-items:center;justify-content:center;text-align:center;font-size:12.5px;color:var(--text-3);line-height:1.5;}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--text-3);font-size:13px;}
.float-login{position:fixed;right:18px;bottom:18px;z-index:70;display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search input{width:150px;}
  .nav-link{padding:10px 9px;font-size:14.5px;}
}
@media (max-width:1024px){
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .check-strip{grid-template-columns:repeat(2,1fr);}
  .rel-cats{grid-template-columns:repeat(2,1fr);}
  .timeline::before{left:8px;}
  .tl-item{grid-template-columns:1fr;column-gap:0;padding-left:34px;}
  .tl-stamp{text-align:left;padding-top:0;display:flex;align-items:baseline;gap:10px;margin-bottom:12px;}
  .tl-stamp .y{font-size:12px;}
  .tl-stamp .m{font-size:17px;margin-top:0;}
  .tl-node{left:2px;top:8px;}
  .tl-card{grid-template-columns:1fr;}
  .tl-card .thumb{min-height:170px;}
  .cta-card{grid-template-columns:1fr;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cat-hero .inner{padding:44px 32px 40px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .section{padding-top:60px;}
  .section.loose{padding-top:64px;}
  .cat-hero .inner{padding:34px 20px 32px;}
  .cat-hero .meta-row{gap:20px;}
  .check-strip{grid-template-columns:1fr;}
  .rel-cats{grid-template-columns:1fr;}
  .tl-body{padding:20px 18px;}
  .header-inner{min-height:64px;}
  .brand-text{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .float-login{display:block;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --glass:rgba(20,32,60,.55);
  --panel:#101830;
  --line:rgba(255,255,255,.08);
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9C;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --glow:0 0 0 1px rgba(47,212,232,.45), 0 10px 28px -8px rgba(47,212,232,.55);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --shadow-1:0 2px 12px rgba(0,0,0,.35);
  --shadow-2:0 16px 38px -14px rgba(0,0,0,.65);
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,text-underline-offset .2s ease}
a:hover{color:#7BE7F3;text-decoration:underline;text-underline-offset:4px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:none;box-shadow:var(--glow);border-radius:var(--r-sm)}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.25;font-weight:700;letter-spacing:.2px;color:var(--text)}
h1{font-size:clamp(30px,4.4vw,52px)}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px}
p{margin:0 0 16px;color:var(--text-2)}
ul,ol{margin:0 0 16px;padding-left:20px;color:var(--text-2)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1260px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#04121A;box-shadow:var(--glow)}
.btn-primary:hover{background:#4BE0F1;color:#04121A}
.btn-outline{background:transparent;border-color:rgba(47,212,232,.55);color:var(--brand)}
.btn-outline:hover{background:rgba(47,212,232,.08);color:#7BE7F3}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:rgba(255,255,255,.22);color:var(--text)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand)}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;line-height:1.5;
  background:rgba(124,108,255,.16);color:#B9B1FF;border:1px solid rgba(124,108,255,.3);
}
.badge-ok{background:rgba(61,214,140,.14);color:var(--ok);border-color:rgba(61,214,140,.3)}
.badge-accent{background:rgba(255,178,90,.14);color:var(--accent);border-color:rgba(255,178,90,.3)}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,15,.86);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,9,19,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 1px 0 rgba(47,212,232,.22);
}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{text-decoration:none;color:var(--text)}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:100%;height:100%}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--brand);font-weight:600;font-size:13px;margin-left:4px}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;font-size:14.5px;font-weight:500;
  color:var(--text-2);white-space:nowrap;transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);text-decoration:none}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(47,212,232,.8);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.search-box{position:relative}
.search-box input{
  width:190px;height:38px;padding:0 14px 0 34px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:14px;font-family:var(--sans);
  transition:border-color .2s ease,box-shadow .2s ease,width .2s ease;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,232,.18);outline:none}
.search-box i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--text-3)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);cursor:pointer;
}

/* ============ 面包屑 ============ */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb span{margin:0 8px;opacity:.6}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;overflow:hidden;padding:34px 0 60px;margin-bottom:0}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.4;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 120% at 12% 0%, rgba(14,26,56,.95) 0%, rgba(19,32,72,.78) 45%, rgba(5,7,15,.96) 100%),
    linear-gradient(180deg, rgba(5,7,15,.55) 0%, var(--bg-0) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero h1{max-width:900px;margin-bottom:16px}
.cat-hero .lead{max-width:780px;font-size:16.5px;color:#C3CFE8;margin-bottom:22px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center}
.hero-meta .item{display:flex;align-items:baseline;gap:8px;font-size:13px;color:var(--text-3)}
.hero-meta .item b{font-family:var(--mono);font-size:19px;color:var(--accent);font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* ============ 板块 ============ */
.section{padding:84px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{position:relative;padding-left:16px;margin-bottom:8px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.7);
}
.section-head p{margin:0;font-size:14.5px;max-width:640px}
.section-alt{background:linear-gradient(180deg,rgba(10,15,31,.9) 0%,rgba(5,7,15,1) 100%)}
.rail-divider{height:1px;border:0;background:linear-gradient(90deg,rgba(47,212,232,0) 0%,rgba(47,212,232,.45) 45%,rgba(47,212,232,0) 100%);margin:0}

/* ============ 标签云 ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.tag-cloud .cloud-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;font-size:14px;
  color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.tag-cloud .cloud-tag:hover{
  color:var(--brand);border-color:rgba(47,212,232,.5);background:rgba(47,212,232,.07);
  transform:translateY(-2px);text-decoration:none;
}
.tag-cloud .cloud-tag.lg{font-size:16px;padding:11px 22px;color:var(--text)}
.tag-cloud .cloud-tag.hot{background:rgba(124,108,255,.14);border-color:rgba(124,108,255,.32);color:#C0B8FF}
.tag-cloud .cloud-tag em{font-family:var(--mono);font-style:normal;font-size:12px;color:var(--text-3)}

/* ============ 瀑布流卡片 ============ */
.waterfall{column-count:3;column-gap:24px}
.wf-card{
  break-inside:avoid;display:block;margin:0 0 24px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.wf-card:hover{
  transform:translateY(-3px);border-color:rgba(47,212,232,.45);
  box-shadow:var(--shadow-2),0 0 0 1px rgba(47,212,232,.25);text-decoration:none;
}
.wf-cover{position:relative;overflow:hidden;background:#0B1224}
.wf-cover img{width:100%;object-fit:cover;transition:transform .4s ease}
.wf-card:hover .wf-cover img{transform:scale(1.04)}
.wf-cover.h1 img{height:190px}
.wf-cover.h2 img{height:140px}
.wf-cover.h3 img{height:230px}
.wf-cover .wf-badge{
  position:absolute;left:14px;top:14px;padding:4px 12px;border-radius:999px;
  font-size:12px;background:rgba(10,15,31,.78);color:var(--brand);border:1px solid rgba(47,212,232,.35);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.wf-body{padding:20px 20px 22px}
.wf-body h3{font-size:17.5px;margin-bottom:10px;line-height:1.45}
.wf-card:hover .wf-body h3{color:var(--brand)}
.wf-body p{font-size:14.4px;margin-bottom:14px;color:var(--text-2)}
.wf-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.wf-foot{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px dashed rgba(255,255,255,.09)}
.wf-foot .date{font-family:var(--mono);font-size:12px;color:var(--text-3)}
.wf-foot .go{font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}

/* ============ 指标条 ============ */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
}
.metric-item .num{font-family:var(--mono);font-size:clamp(24px,3vw,34px);color:var(--accent);font-weight:600;line-height:1.1}
.metric-item .num small{font-size:14px;color:var(--text-3);margin-left:4px;font-family:var(--sans)}
.metric-item .label{font-size:14px;color:var(--text-2);margin-top:6px}
.metric-item .bar{height:4px;border-radius:999px;background:rgba(255,255,255,.07);margin-top:14px;overflow:hidden}
.metric-item .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand))}
.metric-item .bar.warm i{background:linear-gradient(90deg,#C97B2E,var(--accent))}
.ticks{display:flex;gap:4px;margin-top:10px}
.ticks span{width:2px;height:8px;background:rgba(255,255,255,.14)}
.ticks span.on{background:var(--brand);box-shadow:0 0 6px rgba(47,212,232,.7)}

/* ============ 要点列表 ============ */
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.point-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease;
}
.point-card:hover{border-color:rgba(47,212,232,.4);transform:translateY(-2px)}
.point-card .ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,232,.1);border:1px solid rgba(47,212,232,.28);color:var(--brand);margin-bottom:16px;
}
.point-card h3{font-size:18px;margin-bottom:10px}
.point-card p{font-size:14.6px;margin-bottom:0}
.point-card ul{margin:0;padding-left:18px;font-size:14.4px}
.point-card ul li{margin-bottom:6px}
.point-card ul li::marker{color:var(--brand)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start}
.faq-aside h2{position:relative;padding-left:16px}
.faq-aside h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.7);
}
.faq-aside p{font-size:14.6px}
.faq-contact{
  margin-top:20px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
}
.faq-contact .t{font-size:13px;color:var(--text-3);margin-bottom:6px}
.faq-contact .v{font-family:var(--mono);font-size:16px;color:var(--text)}
.accordion{border:0;background:transparent;margin:0;padding:0;list-style:none}
.accordion .accordion-item{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease;
}
.accordion .accordion-item:hover{border-color:rgba(255,255,255,.18)}
.accordion .accordion-item.is-active{border-color:rgba(47,212,232,.42);box-shadow:0 0 0 1px rgba(47,212,232,.16)}
.accordion .accordion-item.is-active::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(47,212,232,.9);
}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
  border:0;background:transparent;line-height:1.5;
}
.accordion .accordion-title:hover{background:rgba(255,255,255,.03);text-decoration:none;color:var(--text)}
.accordion .accordion-title::before{
  content:"+";order:2;flex:0 0 auto;width:24px;height:24px;line-height:22px;text-align:center;
  border-radius:50%;font-size:16px;font-weight:400;color:var(--brand);
  background:rgba(47,212,232,.1);border:1px solid rgba(47,212,232,.3);
  transition:transform .2s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"−";transform:rotate(180deg)}
.accordion .accordion-content{
  padding:0 22px 20px;border:0;background:transparent;
  font-size:14.8px;color:var(--text-2);line-height:1.8;
}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ============ 相关分类横条 ============ */
.rel-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.rel-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:18px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  color:var(--text-2);font-size:14.5px;transition:all .2s ease;
}
.rel-item:hover{border-color:rgba(47,212,232,.45);color:var(--brand);background:rgba(47,212,232,.06);text-decoration:none}
.rel-item.current{border-color:rgba(47,212,232,.5);color:var(--brand);background:rgba(47,212,232,.08)}

/* ============ 分页 ============ */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px}
.pager a,.pager span{
  min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  padding:0 12px;border-radius:10px;font-size:14px;font-family:var(--mono);
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
}
.pager a:hover{border-color:rgba(47,212,232,.5);color:var(--brand);text-decoration:none}
.pager .is-current{background:var(--brand);border-color:var(--brand);color:#04121A;font-weight:700}
.pager .is-disabled{opacity:.45}

/* ============ CTA ============ */
.cta-card{
  position:relative;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:48px;box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
}
.cta-card::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,232,.24) 0%,rgba(47,212,232,0) 70%);
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;position:relative}
.cta-card p{margin-bottom:0;position:relative;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;background:linear-gradient(180deg,rgba(19,32,72,.55) 0%,var(--bg-0) 42%);
  border-top:1px solid var(--line);padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:17px;color:var(--text)}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.8}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-3)}
.footer-col ul li a:hover{color:var(--brand)}
.footer-qr{
  margin-top:16px;width:104px;height:104px;border-radius:14px;
  border:1px dashed rgba(255,255,255,.18);background:rgba(255,255,255,.03);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-3);line-height:1.6;
}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.float-login{
  position:fixed;right:18px;bottom:18px;z-index:70;display:none;
  padding:12px 20px;border-radius:999px;background:var(--brand);color:#04121A;
  font-size:14px;font-weight:700;box-shadow:var(--glow);
}
.float-login:hover{text-decoration:none;color:#04121A}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .main-nav{gap:0}
  .nav-link{padding:8px 9px;font-size:14px}
  .search-box input{width:150px}
  .waterfall{column-count:2}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-card{grid-template-columns:1fr;padding:38px}
}
@media (max-width:900px){
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rel-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .point-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:768px){
  .nav-toggle{display:inline-flex}
  .header-actions .btn-ghost{display:none}
  .search-box{display:none}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(8,12,24,.96);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    padding:12px 20px 20px;
    display:none;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:13px 12px;font-size:15px;border-radius:10px}
  .nav-link.is-active{background:rgba(47,212,232,.08)}
  .nav-link.is-active::after{display:none}
  .header-actions .btn-primary{padding:9px 14px;font-size:13.5px}
  .section{padding:60px 0}
  .cat-hero{padding:26px 0 46px}
  .waterfall{column-count:1}
  .float-login{display:inline-flex}
  .cta-card{padding:30px 22px}
  .site-footer{padding:48px 0 22px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .metric-strip{grid-template-columns:1fr;padding:22px}
  .rel-bar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .brand-text{font-size:15px}
  .brand-text em{display:none}
  .pager a,.pager span{min-width:34px;height:34px;padding:0 10px;font-size:13px}
  .hero-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --panel:#101830;
  --panel-soft:#0D1428;
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --glass:rgba(20,32,60,.55);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --tx:#EAF0FF;
  --tx-2:#A8B6D4;
  --tx-3:#6E7C9C;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --glow:0 0 0 1px rgba(47,212,232,.45),0 10px 28px -8px rgba(47,212,232,.55);
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 14px 32px -16px rgba(0,0,0,.8);
  --sh-3:0 26px 64px -22px rgba(0,0,0,.85);
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-pill:999px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",monospace;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;background:transparent;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#7fe6f4;text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;line-height:1.25;font-weight:700;color:var(--tx);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
dl,dd,dt{margin:0;}
figure{margin:0;}
::selection{background:rgba(47,212,232,.32);color:#fff;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ 顶部状态条 ============ */
.topbar{
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--tx-3);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:34px;
}
.topbar-dot{
  display:inline-block;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--ok);
  margin-right:8px;
  box-shadow:0 0 10px rgba(61,214,140,.8);
  vertical-align:middle;
}
.topbar-right{white-space:nowrap;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:70;}
.header-bar{
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(5,7,15,.84);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
body.scrolled .header-bar{
  height:64px;
  background:rgba(5,7,15,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(47,212,232,.3);
  box-shadow:0 10px 26px -20px rgba(47,212,232,.8);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  width:100%;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--tx);
  text-decoration:none;
}
.brand:hover{color:var(--tx);text-decoration:none;}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(47,212,232,.09);
  border:1px solid rgba(47,212,232,.28);
  color:var(--brand);
  flex:none;
}
.brand-mark svg{width:19px;height:19px;display:block;}
.brand-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:.4px;
  white-space:nowrap;
}
.brand-sub{
  color:var(--tx-2);
  font-size:13px;
  font-weight:500;
  margin-left:5px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 auto;
  min-width:0;
}
.nav-link{
  position:relative;
  padding:9px 12px;
  border-radius:8px;
  color:var(--tx-2);
  font-size:14.5px;
  white-space:nowrap;
  text-decoration:none;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{
  color:var(--tx);
  background:rgba(255,255,255,.045);
  text-decoration:none;
}
.nav-link.is-active{
  color:var(--brand);
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,212,232,.85);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.search-box{
  display:flex;
  align-items:center;
  height:40px;
  padding:0 6px 0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,212,232,.16);
}
.search-box input{
  width:186px;
  border:0;
  outline:none;
  background:transparent;
  font-size:13.5px;
  color:var(--tx);
}
.search-box input::placeholder{color:var(--tx-3);}
.search-box button{
  width:30px;height:30px;
  display:grid;place-items:center;
  border:0;
  border-radius:50%;
  background:rgba(47,212,232,.14);
  color:var(--brand);
  cursor:pointer;
  transition:background .2s ease;
}
.search-box button:hover{background:rgba(47,212,232,.28);}
.search-box svg{width:15px;height:15px;}

.menu-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--tx);
  cursor:pointer;
}
.menu-toggle svg{width:18px;height:18px;}

.mobile-panel{
  position:fixed;
  inset:0;
  z-index:120;
  background:rgba(5,7,15,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  display:none;
}
.mobile-panel.is-open{display:block;}
.mobile-panel-inner{
  position:absolute;
  top:0;right:0;
  width:min(340px,88vw);
  height:100%;
  padding:24px 22px;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
}
.mobile-panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:12px;
}
.mobile-panel-title{font-size:15px;font-weight:700;color:var(--tx);}
.mobile-close{
  width:36px;height:36px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--tx-2);
  display:grid;place-items:center;
  cursor:pointer;
}
.mobile-panel .nav-link{
  padding:13px 14px;
  font-size:15px;
  border:1px solid transparent;
}
.mobile-panel .nav-link.is-active{
  border-color:rgba(47,212,232,.35);
  background:rgba(47,212,232,.08);
}
.mobile-panel .nav-link.is-active::after{display:none;}
.mobile-search{
  margin-top:14px;
  display:flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.mobile-search input{
  width:100%;
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--tx);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn:hover{text-decoration:none;}
.btn:focus-visible{outline:none;box-shadow:var(--glow);}
.btn-primary{
  background:linear-gradient(180deg,#3ee0f2,var(--brand-deep));
  color:#03151B;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#03151B;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(47,212,232,.6),0 18px 36px -12px rgba(47,212,232,.7);
}
.btn-secondary{
  background:transparent;
  border-color:rgba(47,212,232,.5);
  color:var(--brand);
}
.btn-secondary:hover{
  background:rgba(47,212,232,.08);
  color:var(--brand);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--tx-2);
}
.btn-ghost:hover{
  color:var(--tx);
  border-color:rgba(47,212,232,.45);
}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn-block{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--tx-3);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
}
.breadcrumb li{display:flex;align-items:center;}
.breadcrumb li + li::before{
  content:"›";
  margin:0 10px;
  color:var(--tx-3);
  font-size:14px;
}
.breadcrumb a{color:var(--tx-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--brand);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:40px 0 62px;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.4;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(120% 130% at 18% 0%,#0E1A38 0%,rgba(5,7,15,.88) 58%,#05070F 100%);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  max-width:900px;
}
.cat-hero h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:700;
  line-height:1.2;
  margin:18px 0 0;
  letter-spacing:.5px;
}
.cat-hero-lead{
  margin-top:18px;
  max-width:720px;
  color:var(--tx-2);
  font-size:16.5px;
  line-height:1.85;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-facts li{
  font-size:13.5px;
  color:var(--tx-3);
}
.hero-facts .mono{
  color:var(--accent);
  font-size:17px;
  font-weight:700;
  margin-right:8px;
}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  line-height:1.7;
  font-weight:500;
  white-space:nowrap;
}
.badge-nebula{
  background:rgba(124,108,255,.16);
  border:1px solid rgba(124,108,255,.32);
  color:#b9b2ff;
}
.badge-brand{
  background:rgba(47,212,232,.13);
  border:1px solid rgba(47,212,232,.34);
  color:var(--brand);
}
.badge-ok{
  background:rgba(61,214,140,.13);
  border:1px solid rgba(61,214,140,.32);
  color:var(--ok);
}
.badge-accent{
  background:rgba(255,178,90,.13);
  border:1px solid rgba(255,178,90,.32);
  color:var(--accent);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  max-width:760px;
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.18em;
  width:3px;
  border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,212,232,.7);
}
.section-head p{
  margin-top:14px;
  color:var(--tx-2);
  font-size:15.5px;
  line-height:1.85;
}
.section-head--split{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover .arrow{transform:translateX(4px);}
.text-link:hover{text-decoration:none;}

/* ============ 对比矩阵 ============ */
.compare-matrix{
  display:grid;
  grid-template-columns:1fr 1px 1fr;
  margin-top:44px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--panel);
  box-shadow:var(--sh-2);
}
.compare-divider{background:var(--line);}
.compare-col{
  padding:34px 32px 36px;
  display:flex;
  flex-direction:column;
}
.compare-col--base{
  background:linear-gradient(180deg,rgba(124,108,255,.08),rgba(16,24,48,.4) 40%);
}
.compare-col--strong{
  background:linear-gradient(180deg,rgba(47,212,232,.12),rgba(16,24,48,.4) 40%);
}
.compare-col-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.compare-col h3{
  font-size:21px;
  letter-spacing:.4px;
}
.compare-col-desc{
  margin-top:12px;
  color:var(--tx-2);
  font-size:14.5px;
  line-height:1.8;
}
.compare-rows{
  margin-top:22px;
  border-top:1px solid var(--line);
}
.compare-row{
  display:grid;
  grid-template-columns:104px 1fr;
  gap:16px;
  padding:15px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
}
.compare-row dt{
  color:var(--tx-3);
  font-size:13.5px;
  line-height:1.7;
}
.compare-row dd{
  color:var(--tx);
  font-size:14.5px;
  line-height:1.7;
}
.compare-col--base .compare-row dd .mono{color:#c0b8ff;}
.compare-col--strong .compare-row dd .mono{color:var(--accent);}
.compare-foot{
  margin-top:26px;
}

/* ============ 内容卡网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:44px;
}
.content-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.content-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,212,232,.42);
  box-shadow:var(--sh-2);
}
.content-card figure{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--panel-soft);
}
.content-card img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.content-card:hover img{transform:scale(1.045);}
.content-card-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:11px;
  flex:1 1 auto;
}
.content-card h3{
  font-size:17px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.content-card p{
  color:var(--tx-2);
  font-size:14px;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--tx-3);
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 分页 ============ */
.pager{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:52px;
}
.pager a,.pager span{
  min-width:42px;
  height:42px;
  padding:0 14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  color:var(--tx-2);
  font-size:14px;
  text-decoration:none;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.pager a:hover{
  border-color:rgba(47,212,232,.45);
  color:var(--brand);
  background:rgba(47,212,232,.06);
  text-decoration:none;
}
.pager .is-current{
  background:rgba(47,212,232,.14);
  border-color:rgba(47,212,232,.5);
  color:var(--brand);
  font-weight:700;
}
.pager .is-disabled{
  opacity:.42;
  cursor:not-allowed;
}
.pager-note{
  margin-top:16px;
  text-align:center;
  font-size:13px;
  color:var(--tx-3);
}

/* ============ 准备清单 ============ */
.checklist{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px 28px;
  margin-top:40px;
}
.check-item{
  display:flex;
  gap:16px;
  padding:22px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .2s ease,transform .2s ease;
}
.check-item:hover{border-color:rgba(47,212,232,.35);transform:translateY(-2px);}
.check-index{
  flex:none;
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:rgba(47,212,232,.1);
  border:1px solid rgba(47,212,232,.3);
  color:var(--brand);
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
}
.check-item h3{font-size:16px;margin-bottom:6px;}
.check-item p{color:var(--tx-2);font-size:14px;line-height:1.75;}

/* ============ FAQ ============ */
.faq-wrap{
  display:grid;
  grid-template-columns:340px 1fr;
  gap:56px;
  margin-top:8px;
}
.faq-aside h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  position:relative;
  padding-left:16px;
}
.faq-aside h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.18em;
  width:3px;border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,212,232,.7);
}
.faq-aside p{
  margin-top:16px;
  color:var(--tx-2);
  font-size:15px;
  line-height:1.85;
}
.faq-contact{
  margin-top:26px;
  padding:20px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.faq-contact h3{font-size:15px;margin-bottom:8px;}
.faq-contact p{font-size:13.5px;color:var(--tx-2);margin:0;line-height:1.8;}
.faq-contact .mono{color:var(--accent);font-size:15px;}

.accordion.faq-list{
  background:transparent;
  border:0;
  margin:0;
}
.faq-list .faq-item{
  position:relative;
  margin-bottom:12px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--panel);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-list .faq-item:hover{border-color:rgba(255,255,255,.16);}
.faq-list .faq-item.is-active{
  border-color:rgba(47,212,232,.42);
  box-shadow:var(--sh-2);
}
.faq-list .faq-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,212,232,.9);
}
.faq-list .accordion-title.faq-q{
  display:block;
  width:100%;
  text-align:left;
  padding:19px 56px 19px 24px;
  background:transparent;
  border:0;
  color:var(--tx);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-list .accordion-title.faq-q:hover{color:var(--brand);}
.faq-list .faq-q::after{
  content:"+";
  position:absolute;
  right:24px;
  top:20px;
  color:var(--brand);
  font-size:20px;
  font-weight:600;
  line-height:1;
  transition:transform .2s ease;
}
.faq-list .faq-item.is-active .faq-q::after{
  content:"−";
  transform:rotate(180deg);
}
.faq-list .accordion-content.faq-a{
  display:block;
  padding:0;
  border:0;
  background:transparent;
  color:inherit;
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{
  padding:0 24px 22px;
  color:var(--tx-2);
  font-size:14.5px;
  line-height:1.85;
}

/* ============ 相关分类横条 ============ */
.related-strip{
  padding:64px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.related-strip h2{
  font-size:20px;
  letter-spacing:.4px;
}
.related-links{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:26px;
}
.related-link{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:22px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  color:var(--tx);
  text-decoration:none;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.related-link:hover{
  transform:translateY(-2px);
  border-color:rgba(47,212,232,.42);
  box-shadow:var(--sh-2);
  color:var(--tx);
  text-decoration:none;
}
.related-link strong{font-size:16px;font-weight:700;}
.related-link span{font-size:13.5px;color:var(--tx-2);line-height:1.7;}
.related-link .arrow{color:var(--brand);font-size:14px;font-weight:600;}

/* ============ 文末 CTA ============ */
.cta-section{padding:88px 0;}
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,212,232,.26);
  background:radial-gradient(120% 140% at 16% 0%,#0E1A38 0%,rgba(5,7,15,.92) 62%,#05070F 100%);
  padding:64px 48px;
  text-align:center;
  box-shadow:var(--sh-3);
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-panel-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta-panel h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.32;
}
.cta-panel p{
  margin-top:16px;
  color:var(--tx-2);
  font-size:15.5px;
  line-height:1.85;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-top:32px;
}
.cta-points{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:22px;
  margin-top:30px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--tx-3);
}
.cta-points .mono{color:var(--brand);margin-right:6px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:66px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(47,212,232,.09);
  border:1px solid rgba(47,212,232,.28);
}
.footer-brand .brand-mark svg{width:18px;height:18px;}
.footer-brand b{font-size:16px;font-weight:700;}
.footer-col p{
  color:var(--tx-3);
  font-size:13.5px;
  line-height:1.85;
}
.footer-col h4{
  font-size:14.5px;
  font-weight:700;
  margin-bottom:18px;
  color:var(--tx);
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{
  color:var(--tx-2);
  font-size:14px;
}
.footer-col ul a:hover{color:var(--brand);}
.footer-qr{
  margin-top:16px;
  width:96px;height:96px;
  border-radius:14px;
  border:1px dashed rgba(255,255,255,.18);
  background:rgba(255,255,255,.03);
  display:grid;
  place-items:center;
  text-align:center;
  font-size:12px;
  color:var(--tx-3);
  line-height:1.5;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--tx-3);
}
.footer-bottom .mono{color:var(--tx-3);}

.float-login{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:80;
  display:none;
  padding:12px 20px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#3ee0f2,var(--brand-deep));
  color:#03151B;
  font-size:14px;
  font-weight:700;
  box-shadow:var(--glow);
  text-decoration:none;
}
.float-login:hover{color:#03151B;text-decoration:none;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .search-box input{width:150px;}
}
@media (max-width:1120px){
  .search-box{display:none;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .section{padding:80px 0;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .related-links{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .float-login{display:inline-block;}
  .compare-col{padding:28px 24px 30px;}
}
@media (max-width:860px){
  .compare-matrix{grid-template-columns:1fr;}
  .compare-divider{height:1px;width:100%;}
  .checklist{grid-template-columns:1fr;}
  .section-head--split{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .topbar-right{display:none;}
  .topbar-inner{justify-content:flex-start;font-size:12.5px;}
  .brand-sub{display:none;}
  .header-actions .btn-sm{display:none;}
  .header-actions .btn-primary.btn-sm{display:inline-flex;padding:8px 13px;font-size:13px;}
  .cat-hero{padding:28px 0 50px;}
  .hero-facts{gap:18px 24px;}
  .hero-facts li{font-size:13px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .cta-section{padding:64px 0;}
  .card-grid{grid-template-columns:1fr;}
  .related-strip{padding:52px 0;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero-lead{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .compare-row{grid-template-columns:1fr;gap:4px;}
  .compare-row dt{font-size:13px;}
  .cta-panel{padding:44px 22px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-list .accordion-title.faq-q{font-size:15px;padding:17px 50px 17px 20px;}
  .faq-a-inner{padding:0 20px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A0F1F;
  --bg-radial:radial-gradient(120% 130% at 18% 0%, #0E1A38 0%, #132048 52%, #05070F 100%);
  --brand:#2FD4E8;
  --brand-deep:#17A6C4;
  --accent:#FFB25A;
  --nebula:#7C6CFF;
  --glass:rgba(20,32,60,.55);
  --panel:#101830;
  --panel-2:#0C1226;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9C;
  --ok:#3DD68C;
  --warn:#FF7A6B;
  --glow:0 0 0 1px rgba(47,212,232,.45), 0 10px 28px -8px rgba(47,212,232,.55);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(0,0,0,.35), 0 10px 26px -18px rgba(0,0,0,.85);
  --shadow-2:0 2px 8px rgba(0,0,0,.42), 0 20px 46px -22px rgba(47,212,232,.42);
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7BE6F4;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text);margin:0 0 .6em;line-height:1.25;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.2;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:20px;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1260px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,15,.82);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(5,7,15,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(47,212,232,.22);
  box-shadow:0 1px 0 rgba(47,212,232,.14), 0 18px 40px -30px rgba(47,212,232,.6);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:76px;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .nav-wrap{min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid rgba(47,212,232,.4);
  background:radial-gradient(80% 80% at 30% 20%, rgba(47,212,232,.22), rgba(12,18,38,.9));
  box-shadow:0 0 0 1px rgba(47,212,232,.12), 0 8px 20px -12px rgba(47,212,232,.8);
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,232,.9);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-search{position:relative;}
.nav-search input{
  width:210px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(12,18,38,.75);
  color:var(--text);
  font-size:14px;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease, width .25s ease, background .2s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  border-color:var(--brand);
  background:rgba(9,15,32,.95);
  box-shadow:0 0 0 3px rgba(47,212,232,.18);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(12,18,38,.8);
  cursor:pointer;
  padding:0;
  place-items:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;margin:3px auto;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.mobile-panel{
  display:none;
  position:absolute;
  left:0;right:0;top:100%;
  padding:16px 24px 22px;
  background:rgba(9,14,30,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  border-bottom:1px solid rgba(47,212,232,.2);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-child{border-bottom:0;}
.mobile-panel a.is-active{color:var(--brand);}
.mobile-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(3,5,12,.6);
  z-index:55;
}
.mobile-mask.is-open{display:block;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-sm);
  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, border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg, #3EDDF0 0%, var(--brand-deep) 100%);
  color:#04121A;
  box-shadow:var(--glow);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-1px);color:#04121A;box-shadow:0 0 0 1px rgba(47,212,232,.6), 0 16px 34px -10px rgba(47,212,232,.75);}
.btn-outline{
  background:transparent;
  border-color:rgba(47,212,232,.6);
  color:var(--brand);
}
.btn-outline:hover{background:rgba(47,212,232,.08);color:var(--brand);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-2);
}
.btn-ghost:hover{border-color:rgba(47,212,232,.5);color:var(--text);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(47,212,232,.2);
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover .arrow{transform:translateX(4px);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{margin:6px 0 0;}
.section-desc{max-width:520px;color:var(--text-2);font-size:15px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--brand);font-family:var(--mono);
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:linear-gradient(90deg, rgba(47,212,232,0), var(--brand));
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  background:rgba(124,108,255,.16);
  color:#B6AEFF;
  border:1px solid rgba(124,108,255,.32);
}
.badge-ok{background:rgba(61,214,140,.14);color:var(--ok);border-color:rgba(61,214,140,.3);}
.badge-warn{background:rgba(255,122,107,.14);color:var(--warn);border-color:rgba(255,122,107,.3);}
.divider-orbit{
  height:1px;
  background:linear-gradient(90deg, rgba(47,212,232,0), rgba(47,212,232,.55), rgba(47,212,232,0));
  border:0;margin:0;
}

/* ============ 面包屑 ============ */
.breadcrumb-bar{
  padding:22px 0 0;
  font-size:13.5px;
  color:var(--text-3);
}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--brand);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  margin-top:20px;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-1);
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(105deg, rgba(5,7,15,.94) 0%, rgba(8,14,32,.86) 46%, rgba(13,21,48,.68) 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(1px 1px at 12% 24%, rgba(234,240,255,.55), transparent 60%),
                   radial-gradient(1px 1px at 62% 16%, rgba(47,212,232,.6), transparent 60%),
                   radial-gradient(1px 1px at 82% 62%, rgba(234,240,255,.4), transparent 60%),
                   radial-gradient(1px 1px at 34% 78%, rgba(255,178,90,.45), transparent 60%);
  opacity:.75;pointer-events:none;
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 48px;
  max-width:820px;
}
.cat-hero h1{margin:14px 0 16px;}
.cat-hero .lead{
  color:var(--text-2);
  font-size:16.5px;
  line-height:1.85;
  margin:0 0 26px;
}
.cat-hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{
  display:flex;
  gap:40px;
  flex-wrap:wrap;
  margin-top:32px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.1);
}
.hero-stat .num{
  font-family:var(--mono);
  font-size:24px;
  font-weight:700;
  color:var(--accent);
  display:block;
  line-height:1.3;
}
.hero-stat .lbl{font-size:13px;color:var(--text-3);}

/* ============ 概览说明 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:32px;
  align-items:start;
}
.intro-copy p{color:var(--text-2);font-size:16px;}
.intro-copy p:first-child{font-size:17.5px;color:var(--text);line-height:1.85;}
.intro-aside{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 26px 20px;
  box-shadow:var(--shadow-1);
}
.intro-aside h3{font-size:16px;margin-bottom:16px;}
.tick-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.7;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,232,.8);
}

/* ============ 步骤卡 ============ */
.step-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:24px;
}
.step-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:30px 28px 26px;
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.step-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg, rgba(47,212,232,.9), rgba(124,108,255,.5) 55%, rgba(47,212,232,0));
  opacity:.7;
}
.step-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,212,232,.45);
  box-shadow:var(--shadow-2);
}
.step-no{
  font-size:46px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(47,212,232,.7);
  margin-bottom:14px;
  letter-spacing:2px;
}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card > p{color:var(--text-2);font-size:14.8px;margin-bottom:16px;}
.step-list{margin-bottom:18px;}
.step-list li{
  position:relative;
  padding-left:20px;
  font-size:14.2px;
  color:var(--text-2);
  margin-bottom:8px;
  line-height:1.7;
}
.step-list li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:10px;height:1px;
  background:rgba(47,212,232,.8);
}
.step-meta{
  display:flex;align-items:center;gap:10px;
  margin-bottom:18px;
}

/* ============ 内容卡网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:24px;
}
.c-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.c-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,212,232,.42);
  box-shadow:var(--shadow-2);
}
.c-card-media{
  position:relative;
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:var(--panel-2);
}
.c-card-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.c-card:hover .c-card-media img{transform:scale(1.04);}
.c-card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(5,7,15,0) 40%, rgba(5,7,15,.72) 100%);
}
.c-card-media .badge{
  position:absolute;left:14px;top:14px;z-index:2;
  backdrop-filter:blur(6px);
}
.c-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.c-card-body h3{
  font-size:16.5px;
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.c-card-body p{
  color:var(--text-2);
  font-size:14.2px;
  line-height:1.7;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.c-card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 分页 ============ */
.pagination{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  margin-top:48px;
  flex-wrap:wrap;
}
.page-item{
  min-width:42px;height:42px;
  padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line-strong);
  background:rgba(16,24,48,.7);
  color:var(--text-2);
  font-size:14px;
  font-family:var(--mono);
  transition:all .2s ease;
}
.page-item:hover{border-color:rgba(47,212,232,.55);color:var(--text);transform:translateY(-1px);}
.page-item.is-current{
  background:linear-gradient(180deg, rgba(47,212,232,.95), var(--brand-deep));
  color:#04121A;
  border-color:transparent;
  font-weight:700;
  box-shadow:var(--glow);
}
.page-item.is-disabled{opacity:.4;pointer-events:none;}

/* ============ 相关分类横条 ============ */
.rel-bar{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;flex-direction:column;gap:8px;
  padding:22px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(20,32,60,.8), rgba(10,16,34,.9));
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(47,212,232,.45);box-shadow:var(--shadow-2);}
.rel-card strong{color:var(--text);font-size:16px;}
.rel-card span{color:var(--text-3);font-size:13.5px;line-height:1.65;}

/* ============ 文末 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,212,232,.28);
  background-image:url('/assets/images/coverpic/cover-6.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-2);
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(5,7,15,.95) 0%, rgba(9,16,36,.88) 55%, rgba(14,24,54,.7) 100%);
}
.cta-inner{
  position:relative;z-index:2;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{margin-bottom:10px;font-size:clamp(22px,2.6vw,28px);}
.cta-inner p{color:var(--text-2);margin:0;max-width:560px;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(14,26,56,.75) 0%, rgba(5,7,15,1) 60%);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
}
.footer-brand b{font-size:16px;color:var(--text);letter-spacing:.3px;}
.footer-col p{color:var(--text-3);font-size:14px;line-height:1.8;margin:0;}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.6px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:var(--text-3);font-size:14px;}
.footer-col ul a:hover{color:var(--brand);}
.footer-qr{
  margin-top:16px;
  width:104px;height:104px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.2);
  display:grid;place-items:center;
  text-align:center;
  font-size:12px;
  color:var(--text-3);
  line-height:1.6;
  background:rgba(255,255,255,.02);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  color:var(--text-3);
  font-size:13.5px;
  flex-wrap:wrap;
}
.footer-bottom .mono{color:var(--text-3);}

/* 悬浮登录 */
.float-login{
  position:fixed;
  right:20px;bottom:22px;
  z-index:70;
  display:none;
  padding:11px 20px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#3EDDF0,var(--brand-deep));
  color:#04121A;
  font-weight:700;
  font-size:14px;
  box-shadow:var(--glow);
}
.float-login:hover{color:#04121A;transform:translateY(-1px);}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-search input{width:170px;}
  .nav-link{padding:10px 9px;font-size:14px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:grid;}
  .nav-search{display:none;}
  .brand-text{font-size:15px;}
  .section{padding:76px 0;}
  .cat-hero-inner{padding:44px 30px;}
  .intro-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rel-bar{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .step-grid{grid-template-columns:1fr;}
  .cta-inner{padding:38px 26px;}
  .hero-stats{gap:26px;}
}
@media (max-width:639px){
  .container{padding:0 18px;}
  .section{padding:58px 0;}
  .section-tight{padding:52px 0;}
  .card-grid{grid-template-columns:1fr;}
  .rel-bar{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .cat-hero-inner{padding:34px 20px;}
  .cat-hero .lead{font-size:15.5px;}
  .hero-stat .num{font-size:21px;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .step-card{padding:24px 20px 22px;}
  .step-no{font-size:38px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-login{display:inline-flex;}
  .nav-actions .btn-ghost{display:none;}
}
@media (max-width:420px){
  .brand-text{max-width:120px;overflow:hidden;text-overflow:ellipsis;}
}