/* roulang page: index */
:root{
  --bg-0:#060A12;
  --bg-1:#0A1220;
  --bg-2:#0E1A2C;
  --brand:#1FD1FF;
  --brand-deep:#0B3E7A;
  --accent:#C6FF3D;
  --accent-warm:#FF6B2C;
  --text-1:#E8F1FF;
  --text-2:#9FB3CC;
  --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --shadow-glass:inset 0 1px 0 rgba(255,255,255,.06),0 18px 40px -22px rgba(0,0,0,.85);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Rajdhani","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04121C;padding:10px 18px;border-radius:0 0 10px 0;z-index:2000;}
.skip-link:focus{left:0;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--brand);text-transform:uppercase;}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,10,18,.78);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
@supports not ((-webkit-backdrop-filter:blur(2px)) or (backdrop-filter:blur(2px))){
  .site-header{background:#060A12;}
  .float-card,.news-card,.sol-card,.quote-card,.faq-item{background:#0E1A2C;}
}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121C;font-family:var(--font-num);font-weight:700;font-size:14px;
  box-shadow:0 0 18px -4px rgba(31,209,255,.7);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text-1);}
.nav-search{position:relative;display:flex;align-items:center;flex:1 1 300px;max-width:420px;margin:0 auto;}
.nav-search i{position:absolute;left:16px;font-size:13px;color:var(--text-3);pointer-events:none;}
.nav-search input{
  width:100%;height:42px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  padding:0 18px 0 40px;color:var(--text-1);font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;background:var(--bg-2);border-color:rgba(31,209,255,.55);box-shadow:0 0 0 3px rgba(31,209,255,.18);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;margin-left:auto;}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-s);
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.hamburger:hover{border-color:rgba(31,209,255,.5);color:var(--brand);}
.nav-tabs-bar{border-top:1px solid rgba(140,200,255,.09);}
.nav-tabs-inner{display:flex;align-items:center;}
.channel-tabs{
  display:flex;align-items:center;gap:6px;height:50px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,#000 0,#000 94%,transparent 100%);
  mask-image:linear-gradient(90deg,#000 0,#000 94%,transparent 100%);
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tab{
  position:relative;white-space:nowrap;padding:8px 15px;border-radius:999px;
  font-size:14px;color:var(--text-2);border:1px solid transparent;
  transition:.18s ease;
}
.channel-tab:hover{color:var(--text-1);background:var(--glass);}
.channel-tab.active{
  color:var(--text-1);
  background:rgba(31,209,255,.12);
  border-color:rgba(31,209,255,.45);
  box-shadow:0 0 16px -6px rgba(31,209,255,.85);
}
.mobile-drawer{background:var(--bg-1);color:var(--text-1);border-left:1px solid var(--line);width:308px;}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);}
.drawer-list{display:flex;flex-direction:column;padding:12px 0;}
.drawer-list a{
  padding:14px 22px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(140,200,255,.09);
}
.drawer-list a:hover,.drawer-list a.active{color:var(--brand);background:var(--glass);}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-glass,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,border-color .18s ease,color .18s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand),#0FA8D8);
  color:#04121C;
  box-shadow:0 0 24px -8px rgba(31,209,255,.9);
}
.btn-glow:hover{color:#04121C;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 30px -6px rgba(31,209,255,1);}
.btn-glass{
  background:var(--glass);border-color:var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.btn-glass:hover{color:var(--text-1);border-color:rgba(31,209,255,.5);box-shadow:0 0 20px -10px rgba(31,209,255,.9);}
.btn-ghost{height:40px;padding:0 14px;font-size:14px;color:var(--text-2);background:transparent;}
.btn-ghost:hover{color:var(--brand);}
.btn-sm-glow{height:40px;padding:0 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg-0);}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 28%,rgba(31,209,255,.18),transparent 56%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(198,255,61,.05) 0 1px,transparent 1px 28px);
  pointer-events:none;
  opacity:.7;
}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;min-height:74vh;padding:64px 0 72px;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,.97fr);gap:56px;align-items:center;width:100%;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--accent);
  padding:6px 14px;border-radius:999px;
  background:rgba(198,255,61,.08);border:1px solid rgba(198,255,61,.28);
}
.hero h1{
  font-size:clamp(30px,4.1vw,50px);
  line-height:1.16;
  margin:18px 0 18px;
  max-width:15em;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:31em;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
}
.stat{padding:0 18px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat b{display:block;font-family:var(--font-num);font-size:27px;font-weight:700;color:var(--text-1);line-height:1.2;}
.stat span{display:block;font-size:12.5px;color:var(--text-3);letter-spacing:.04em;margin-top:2px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-l);border:1px solid var(--line);
  box-shadow:var(--shadow-glass);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-l);
  background:linear-gradient(180deg,rgba(6,10,18,.12) 0%,rgba(6,10,18,.62) 100%);
  pointer-events:none;
}
.float-card{
  position:absolute;z-index:3;
  min-width:172px;
  padding:15px 17px;border-radius:var(--r-m);
  background:rgba(10,18,32,.82);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-glass);
}
.fc-1{top:26px;left:-26px;}
.fc-2{bottom:30px;right:-22px;}
.fc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);}
.fc-value{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.fc-2 .fc-value{color:var(--accent);}
.fc-sub{font-size:12.5px;color:var(--text-2);margin-top:2px;}
.fc-row{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--text-2);margin-top:6px;}
.fc-row b{font-family:var(--font-num);font-size:15px;color:var(--text-1);}

/* ---------- 信任条 ---------- */
.trust{background:var(--bg-1);border-top:1px solid rgba(140,200,255,.09);border-bottom:1px solid rgba(140,200,255,.09);padding:26px 0;}
.trust-list{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  overflow-x:auto;scrollbar-width:none;
}
.trust-list::-webkit-scrollbar{display:none;}
.trust-item{
  display:flex;align-items:center;gap:9px;white-space:nowrap;
  font-size:14px;color:var(--text-3);opacity:.62;letter-spacing:.03em;
  transition:opacity .18s ease,color .18s ease;
}
.trust-item:hover{opacity:1;color:var(--text-1);}
.trust-item i{color:var(--brand);font-size:13px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,2.9vw,32px);margin:12px 0 14px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.pain-card{
  padding:26px 24px;border-radius:var(--r-m);
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  border:1px solid rgba(140,200,255,.12);
  transition:border-color .18s ease,transform .18s ease;
}
.pain-card:hover{border-color:rgba(140,200,255,.24);transform:translateY(-3px);}
.pain-mark{
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,107,44,.12);color:var(--accent-warm);
  font-weight:800;font-size:15px;margin-bottom:16px;
}
.pain-card h3{font-size:19px;font-weight:600;color:var(--text-1);margin-bottom:10px;}
.pain-card p{font-size:15px;color:var(--text-3);}

/* ---------- 解决方案 ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.sol-card{
  display:flex;gap:20px;padding:28px;border-radius:var(--r-l);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-glass);
  transition:transform .18s ease,border-color .18s ease;
}
.sol-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);}
.sol-num{
  flex:none;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:18px;font-weight:700;
  color:var(--accent);background:rgba(198,255,61,.08);border:1px solid rgba(198,255,61,.26);
}
.sol-card h3{font-size:20px;margin-bottom:10px;font-weight:600;}
.sol-card p{font-size:15px;color:var(--text-2);}

/* ---------- 成果 ---------- */
.num-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-bottom:36px;}
.num-card{
  padding:24px 22px;border-radius:var(--r-m);
  background:var(--bg-2);border:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease;
}
.num-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.4);}
.num-card b{display:block;font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--accent);line-height:1.15;}
.num-card span{display:block;font-size:13.5px;color:var(--text-2);margin-top:6px;}
.outcome-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-l);border:1px solid var(--line);box-shadow:var(--shadow-glass);
}

/* ---------- 证言 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.quote-card{
  position:relative;overflow:hidden;padding:28px;border-radius:var(--r-l);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease;
}
.quote-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.4);}
.quote-card::before{
  content:"\201C";position:absolute;top:-14px;right:20px;
  font-family:Georgia,serif;font-size:104px;line-height:1;
  color:rgba(255,255,255,.055);pointer-events:none;
}
.quote-card blockquote{margin:0 0 22px;font-size:15.5px;color:var(--text-2);position:relative;z-index:2;}
.quote-person{display:flex;align-items:center;gap:12px;}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(31,209,255,.35),rgba(11,62,122,.6));
  border:1px solid var(--line);font-family:var(--font-num);font-weight:700;font-size:15px;color:var(--text-1);
}
.quote-person b{display:block;font-size:15px;font-weight:600;}
.quote-person span{display:block;font-size:13px;color:var(--text-3);}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.news-head h2{font-size:clamp(24px,2.9vw,32px);margin-top:12px;}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:8px;white-space:nowrap;}
.link-more:hover{color:var(--text-1);}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-m);background:var(--bg-2);border:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(31,209,255,.45);box-shadow:0 22px 46px -26px rgba(31,209,255,.55);}
.news-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-cat{
  align-self:flex-start;font-size:12px;letter-spacing:.04em;
  padding:3px 11px;border-radius:999px;
  background:rgba(31,209,255,.12);color:var(--brand);
  border:1px solid rgba(31,209,255,.26);
}
.news-title{font-size:19px;font-weight:600;line-height:1.45;}
.news-title a{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title a{color:var(--brand);}
.news-excerpt{
  font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid rgba(140,200,255,.1);
  display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);
}
.news-meta .arrow{margin-left:auto;transition:transform .18s ease,color .18s ease;}
.news-card:hover .news-meta .arrow{color:var(--brand);transform:translateX(4px);}
.empty-state{
  padding:56px 32px;text-align:center;border-radius:var(--r-l);
  background:var(--glass);border:1px dashed var(--line);
}
.empty-state i{font-size:26px;color:var(--text-3);}
.empty-state p{margin:14px 0 20px;color:var(--text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-m);
  background:var(--glass);overflow:hidden;
  transition:background .18s ease,border-color .18s ease;
}
.faq-item[open]{background:var(--glass-strong);border-color:rgba(31,209,255,.35);}
.faq-item summary{
  display:flex;align-items:center;gap:14px;
  padding:20px 22px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-num{font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--accent);flex:none;}
.faq-icon{margin-left:auto;color:var(--text-3);font-size:14px;transition:transform .22s ease,color .22s ease;flex:none;}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--brand);}
.faq-body{padding:0 22px 22px 60px;color:var(--text-2);font-size:15.5px;}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  padding:68px 48px;border-radius:var(--r-l);
  background:radial-gradient(circle at 50% 0%,rgba(31,209,255,.18),transparent 60%),var(--bg-1);
  border:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(31,209,255,.05) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.cta-band h2{position:relative;font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.cta-band p{position:relative;color:var(--text-2);max-width:640px;margin:0 auto;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:32px;}
.cta-note{position:relative;margin-top:18px;font-size:13.5px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(140,200,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:18px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);letter-spacing:.04em;margin-bottom:18px;}
.footer-col p{font-size:14px;color:var(--text-3);max-width:30em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:11px;display:flex;align-items:center;gap:9px;}
.footer-contact i{color:var(--brand);font-size:13px;width:16px;}
.footer-bottom{padding:24px 0;text-align:center;font-size:13px;color:var(--text-3);}
.footer-bottom a{color:var(--text-2);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;
  background:rgba(10,18,32,.82);border:1px solid var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,border-color .18s ease,color .18s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(31,209,255,.55);color:var(--brand);}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .fc-1{left:-12px;}
  .fc-2{right:-6px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  .nav-search{display:none;}
  .nav-actions .btn-ghost,.nav-actions .btn-sm-glow{display:none;}
  .hamburger{display:inline-flex;}
  .section{padding:72px 0;}
  .hero-inner{min-height:auto;padding:52px 0 60px;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .hero h1{max-width:none;}
  .hero-visual{order:2;}
  .hero-visual img{aspect-ratio:16/9;}
  .fc-1{top:16px;left:0;}
  .fc-2{bottom:16px;right:0;}
  .pain-grid,.quote-grid,.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sol-grid{grid-template-columns:minmax(0,1fr);}
  .num-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-band{padding:52px 28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .footer-col:last-child{grid-column:auto;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .wrap{padding:0 18px;}
  .brand-text{font-size:17px;}
  .nav-top-inner{height:62px;gap:12px;}
  .channel-tabs{height:46px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:12px;}
  .hero-cta .btn-glow,.hero-cta .btn-glass{width:100%;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 0;margin-top:32px;}
  .stat{padding:0 14px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .float-card{min-width:0;padding:12px 14px;}
  .fc-1{top:10px;left:8px;}
  .fc-2{bottom:10px;right:8px;}
  .fc-value{font-size:21px;}
  .pain-grid,.quote-grid,.news-grid,.num-grid{grid-template-columns:minmax(0,1fr);}
  .sol-card{padding:22px;gap:16px;}
  .quote-card{padding:24px;}
  .faq-item summary{padding:17px 18px;font-size:15.5px;gap:10px;}
  .faq-body{padding:0 18px 18px 50px;font-size:15px;}
  .cta-band{padding:44px 20px;}
  .cta-actions .btn-glow,.cta-actions .btn-glass{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:36px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0A1220;
  --bg-2:#0E1A2C;
  --brand:#1FD1FF;
  --brand-deep:#0B3E7A;
  --accent:#C6FF3D;
  --accent-warm:#FF6B2C;
  --text-1:#E8F1FF;
  --text-2:#9FB3CC;
  --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --line-hi:rgba(31,209,255,.45);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --shadow-glass:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px -22px rgba(0,0,0,.85);
  --bs-primary:#1FD1FF;
  --bs-body-bg:#060A12;
  --bs-body-color:#E8F1FF;
  --bs-border-color:rgba(140,200,255,.16);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Rajdhani","DIN Alternate","Bahnschrift",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--text-1);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:var(--text-1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.wrap{max-width:1280px;}}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:1030;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(6,10,18,.82);border-bottom:1px solid var(--line);}
.nav-top-inner{display:flex;align-items:center;gap:24px;min-height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-family:var(--font-num);font-weight:700;font-size:15px;color:#04121b;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 0 0 1px rgba(31,209,255,.35),0 8px 22px -12px rgba(31,209,255,.9);}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--text-1);}
.nav-search{flex:1 1 auto;max-width:400px;display:flex;align-items:center;gap:10px;background:var(--glass);border:1px solid var(--line);border-radius:999px;padding:8px 16px;transition:border-color .18s ease,box-shadow .18s ease;}
.nav-search:focus-within{border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(31,209,255,.16);}
.nav-search i{color:var(--text-3);font-size:14px;}
.nav-search input{flex:1;background:transparent;border:0;outline:none;color:var(--text-1);font-size:14px;}
.nav-search input::placeholder{color:var(--text-3);}
.nav-actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 20px;border-radius:999px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;}
.btn-glow{background:linear-gradient(135deg,#2AE0FF,#12A9E6);color:#03151f;box-shadow:0 10px 26px -14px rgba(31,209,255,.95),inset 0 1px 0 rgba(255,255,255,.4);}
.btn-glow:hover{filter:brightness(1.06);color:#03151f;box-shadow:0 12px 30px -12px rgba(31,209,255,1),0 0 0 2px rgba(31,209,255,.22);transform:translateY(-1px);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--line-hi);color:var(--brand);background:var(--glass-strong);transform:translateY(-1px);}
.btn-lg{height:48px;padding:0 26px;font-size:15px;}
.link-quiet{font-size:14px;color:var(--text-2);}
.link-quiet:hover{color:var(--brand);}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;background:var(--glass);border:1px solid var(--line);color:var(--text-1);align-items:center;justify-content:center;}

.channel-tabs{display:flex;align-items:center;gap:8px;padding:0 24px 10px;max-width:1200px;margin:0 auto;overflow-x:auto;scrollbar-width:none;}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tab{position:relative;flex:0 0 auto;padding:7px 16px;border-radius:999px;font-size:14px;color:var(--text-2);border:1px solid transparent;white-space:nowrap;}
.channel-tab:hover{color:var(--text-1);background:var(--glass);}
.channel-tab.active{color:var(--text-1);background:rgba(31,209,255,.12);border-color:var(--line-hi);box-shadow:0 0 18px -8px rgba(31,209,255,.8);}
.channel-tab.active::after{content:"";position:absolute;left:18px;right:18px;bottom:-4px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(31,209,255,.9);}
@media (min-width:1400px){.channel-tabs{max-width:1280px;}}

.offcanvas.dark-drawer{background:var(--bg-1);color:var(--text-1);border-right:1px solid var(--line);}
.dark-drawer .drawer-link{display:block;padding:13px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);}
.dark-drawer .drawer-link:hover{color:var(--brand);}
.dark-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.7;}

@media (max-width:991px){
  .nav-search{display:none;}
  .nav-actions .link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
}

/* ============ 页头 banner ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.4;}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.55),rgba(6,10,18,.94) 72%,var(--bg-0));}
.page-hero-inner{position:relative;z-index:2;padding:52px 24px 56px;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px;}
.breadcrumb-nav a{color:var(--text-3);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{opacity:.6;}
.breadcrumb-nav .current{color:var(--brand);}
.pill{display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;font-size:12px;letter-spacing:.04em;color:var(--brand);background:rgba(31,209,255,.12);border:1px solid rgba(31,209,255,.28);}
.pill.accent{color:var(--accent);background:rgba(198,255,61,.1);border-color:rgba(198,255,61,.3);}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.14;margin:18px 0 14px;}
.hero-sub{max-width:780px;color:var(--text-2);font-size:17px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;font-size:13px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);}
.badge-chip i{color:var(--accent);font-size:12px;}

/* ============ 通用区块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;margin-bottom:14px;}
.section-head p{color:var(--text-2);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--accent);margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}

/* ============ 图文交替 ============ */
.zigzag{display:flex;flex-direction:column;gap:64px;}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.zig-row.reverse .zig-media{order:2;}
.zig-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-glass);}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.zig-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,0) 40%,rgba(6,10,18,.55));pointer-events:none;}
.zig-step{position:absolute;top:16px;left:16px;z-index:2;display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:32px;padding:0 12px;border-radius:999px;font-family:var(--font-num);font-weight:700;font-size:14px;color:#08160a;background:var(--accent);box-shadow:0 8px 20px -10px rgba(198,255,61,.9);}
.zig-body h3{font-size:20px;line-height:1.4;margin-bottom:14px;}
.zig-body p{color:var(--text-2);margin-bottom:14px;}
.zig-body p:last-child{margin-bottom:0;}
.zig-list li{position:relative;padding-left:20px;color:var(--text-2);font-size:15px;margin-top:8px;}
.zig-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,209,255,.8);}

/* ============ 覆盖范围 ============ */
.cover-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cover-card{padding:26px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--shadow-glass);transition:transform .18s ease,border-color .18s ease;}
.cover-card:hover{transform:translateY(-3px);border-color:var(--line-hi);}
.cover-card h3{font-size:19px;margin-bottom:10px;}
.cover-card p{color:var(--text-2);font-size:15px;}
.cover-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.cover-meta i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(31,209,255,.12);color:var(--brand);font-size:14px;}
.cover-meta .tag{font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--glass);margin-bottom:48px;}
.stat-cell{padding:22px 20px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:0;}
.stat-cell .val{font-size:26px;font-weight:700;color:var(--accent);line-height:1.2;}
.stat-cell .lbl{font-size:13px;color:var(--text-3);margin-top:6px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);overflow:hidden;transition:border-color .18s ease,background-color .18s ease;}
.faq-item[open]{background:var(--glass-strong);border-color:var(--line-hi);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:20px 22px;font-size:16px;font-weight:600;color:var(--text-1);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .idx{font-family:var(--font-num);font-weight:700;font-size:14px;color:var(--accent);border-left:3px solid var(--brand);padding-left:10px;}
.faq-item summary .q{flex:1;}
.faq-item summary .chev{color:var(--text-3);font-size:14px;transition:transform .2s ease,color .2s ease;}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand);}
.faq-item .ans{padding:0 22px 22px 22px;color:var(--text-2);font-size:15px;border-top:1px solid var(--line);margin-top:-2px;padding-top:18px;}

/* ============ CTA + 相关频道 ============ */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 18% 40%,rgba(31,209,255,.14),transparent 58%);}
.cta-band::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(31,209,255,.05) 0 2px,transparent 2px 26px);opacity:.6;pointer-events:none;}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:72px 24px;}
.cta-inner h2{font-size:clamp(24px,3vw,32px);line-height:1.25;margin-bottom:14px;}
.cta-inner p{color:var(--text-2);margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.channel-nav{border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);padding:24px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);}
.channel-nav h3{font-size:16px;margin-bottom:16px;color:var(--text-2);font-weight:600;}
.channel-nav a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 2px;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-1);}
.channel-nav a:last-child{border-bottom:0;}
.channel-nav a i{color:var(--text-3);font-size:12px;transition:transform .18s ease,color .18s ease;}
.channel-nav a:hover i{color:var(--brand);transform:translateX(3px);}

/* ============ footer ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;font-size:14px;}
.footer-brand .brand-text{font-size:17px;font-weight:800;}
.footer-col p{color:var(--text-2);font-size:14px;line-height:1.9;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-contact{display:flex;flex-direction:column;gap:10px;}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:flex-start;gap:10px;}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px;}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--text-3);}

/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--glass-strong);border:1px solid var(--line);color:var(--text-1);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease,color .18s ease,border-color .18s ease;z-index:1040;cursor:pointer;}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{color:var(--brand);border-color:var(--line-hi);transform:translateY(-3px);}

@supports not (backdrop-filter:blur(1px)){
  .site-header{background:#080D17;}
  .nav-search,.badge-chip,.cover-card,.channel-nav,.faq-item,.to-top{background:#0E1A2C;}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:80px 0;}
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:56px 24px;}
  .cover-grid{grid-template-columns:1fr 1fr;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .wrap{padding:0 18px;}
  .page-hero-inner{padding:36px 18px 44px;}
  body{font-size:15.5px;}
  .zigzag{gap:48px;}
  .zig-row{grid-template-columns:1fr;gap:24px;}
  .zig-row.reverse .zig-media{order:0;}
  .zig-body h3{font-size:18px;}
  .cover-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions .btn{width:100%;}
  .faq-item summary{padding:16px 16px;font-size:15px;}
  .faq-item .ans{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0A1220;
  --bg-2:#0E1A2C;
  --panel:#0B1424;
  --brand:#1FD1FF;
  --brand-deep:#0B3E7A;
  --accent:#C6FF3D;
  --accent-warm:#FF6B2C;
  --text-1:#E8F1FF;
  --text-2:#9FB3CC;
  --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --line-strong:rgba(31,209,255,.45);
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --shadow-glass:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px -22px rgba(0,0,0,.85);
  --num-font:'Rajdhani','DIN Alternate','PingFang SC',system-ui,sans-serif;
}
*,*::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-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(900px 520px at 82% -10%, rgba(31,209,255,.10), transparent 70%),
    repeating-linear-gradient(115deg, rgba(31,209,255,.05) 0 1px, transparent 1px 42px);
}
img{max-width:100%;display:block}
a{color:var(--text-1);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25}
button{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.num{font-family:var(--num-font);font-weight:600;letter-spacing:.02em}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,10,18,.78);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
}
@supports not (backdrop-filter:blur(1px)){
  .site-header{background:#070C16}
}
.nav-top-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04121F;font-family:var(--num-font);font-weight:700;font-size:16px;
  box-shadow:0 0 20px rgba(31,209,255,.35);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em}
.nav-search{
  flex:1 1 auto;
  max-width:400px;
  display:flex;align-items:center;gap:10px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:0 16px;
  height:42px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,255,.16);background:var(--glass-strong)}
.nav-search i{color:var(--text-3);font-size:14px}
.nav-search input{
  flex:1;background:none;border:0;outline:none;color:var(--text-1);
  font-size:14.5px;height:100%;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-1);
  font-size:14.5px;font-weight:600;
  transition:all .18s ease;
}
.btn-ghost:hover{background:var(--glass-strong);border-color:var(--line-strong);color:var(--text-1);transform:translateY(-1px)}
.btn-glow{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;
  border:0;border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--brand) 0%,#7FE9FF 100%);
  color:#04121F;font-size:14.5px;font-weight:800;
  box-shadow:0 10px 28px -12px rgba(31,209,255,.9);
  transition:filter .18s ease,transform .18s ease,box-shadow .18s ease;
  cursor:pointer;
}
.btn-glow:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 34px -12px rgba(31,209,255,1);color:#04121F}
.btn-glow.lg,.btn-ghost.lg{height:48px;padding:0 26px;font-size:15.5px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-channels{border-top:1px solid var(--line);background:rgba(8,14,24,.6)}
.channels-inner{display:flex;align-items:center;height:50px;overflow:hidden}
.channel-tabs{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;width:100%}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
  white-space:nowrap;font-size:14px;font-weight:600;color:var(--text-2);
  padding:7px 15px;border-radius:var(--r-pill);border:1px solid transparent;
  transition:all .18s ease;
}
.channel-tab:hover{color:var(--text-1);background:var(--glass)}
.channel-tab.active{
  color:#04121F;
  background:linear-gradient(135deg,var(--brand) 0%,#7FE9FF 100%);
  box-shadow:0 8px 22px -12px rgba(31,209,255,.95);
}
.nav-drawer{background:#08111E;color:var(--text-1);border-left:1px solid var(--line);width:min(340px,88vw)}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.nav-drawer .offcanvas-body{padding:20px}
.nav-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.8);opacity:.7}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-links a{
  padding:12px 14px;border-radius:var(--r-s);border:1px solid transparent;
  color:var(--text-2);font-size:15px;font-weight:600;
}
.drawer-links a:hover{background:var(--glass);border-color:var(--line);color:var(--text-1)}
.drawer-links a.active{background:rgba(31,209,255,.12);border-color:var(--line-strong);color:var(--brand)}

/* ============ article head ============ */
.article-head{
  position:relative;
  padding:34px 0 42px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(6,10,18,.86) 0%,rgba(6,10,18,.94) 60%,var(--bg-0) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb-nav a{color:var(--text-3)}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav .sep{opacity:.6}
.breadcrumb-nav .current{
  color:var(--brand);
  max-width:min(560px,70vw);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.head-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:40px;align-items:end}
.head-main{min-width:0}
.pill-label{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
  color:var(--brand);
  background:rgba(31,209,255,.12);
  border:1px solid rgba(31,209,255,.28);
  border-radius:var(--r-pill);
  padding:5px 13px;
  margin-bottom:16px;
}
.article-title{
  font-size:clamp(28px,3.2vw,44px);
  line-height:1.2;
  margin-bottom:18px;
  overflow-wrap:break-word;
}
.meta-row{
  display:flex;align-items:center;gap:10px 20px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-2);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--text-3);font-size:13px}
.share-row{display:flex;align-items:center;gap:10px;margin-top:18px}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  font-size:14px;cursor:pointer;transition:all .18s ease;
}
.share-btn:hover{color:var(--brand);border-color:var(--line-strong);background:var(--glass-strong)}
.head-side{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:18px 20px;
  box-shadow:var(--shadow-glass);
}
.head-side h4{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.04em;margin-bottom:12px}
.head-side .stat{display:flex;align-items:baseline;gap:8px;margin-bottom:10px}
.head-side .stat strong{font-family:var(--num-font);font-size:24px;color:var(--accent);font-weight:700}
.head-side .stat em{font-style:normal;font-size:13px;color:var(--text-2)}
.head-side p{font-size:13px;color:var(--text-3);margin:8px 0 0;line-height:1.7}

/* ============ article body ============ */
.article-section{padding:52px 0 72px;background:linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 100%)}
.article-panel{
  max-width:840px;
  margin:0 auto;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:44px 46px 50px;
  box-shadow:var(--shadow-glass);
}
.prose{font-size:16.5px;line-height:1.9;color:rgba(232,241,255,.93)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.15em}
.prose h2{
  position:relative;
  font-size:26px;font-weight:800;
  margin:40px 0 16px;
  padding-left:15px;
  color:var(--text-1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;border-radius:3px;
  background:var(--brand);box-shadow:0 0 14px rgba(31,209,255,.7);
}
.prose h3{font-size:20px;font-weight:800;color:var(--brand);margin:30px 0 12px}
.prose h4{font-size:17px;font-weight:600;color:var(--text-1);margin:22px 0 10px}
.prose ul{margin:0 0 1.2em}
.prose ul li{position:relative;padding-left:22px;margin:8px 0}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(31,209,255,.75);
}
.prose ol{margin:0 0 1.2em;padding-left:24px;list-style:decimal}
.prose ol li{margin:8px 0}
.prose ol li::marker{color:var(--brand);font-weight:700}
.prose blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-s) var(--r-s) 0;
  background:rgba(31,209,255,.07);
  color:var(--text-1);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-m);border:1px solid var(--line);margin:24px auto;max-width:100%;height:auto}
.prose figure{margin:24px 0}
.prose figcaption,.prose .caption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.prose a{color:var(--brand);border-bottom:1px solid rgba(31,209,255,.35)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;
  margin:24px 0;font-size:14.5px;background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:var(--r-s);
}
.prose th,.prose td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.prose th{background:rgba(31,209,255,.09);color:var(--brand);font-weight:600}
.prose tr:last-child td{border-bottom:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose code{background:rgba(255,255,255,.07);padding:2px 7px;border-radius:6px;font-size:14px;color:var(--accent)}
.empty-state{
  text-align:center;padding:56px 20px;
  background:var(--glass);border:1px dashed var(--line);border-radius:var(--r-m);
}
.empty-state i{font-size:34px;color:var(--text-3);margin-bottom:14px}
.empty-state p{color:var(--text-2);margin:0 0 18px}

/* ============ article footer / tags ============ */
.article-foot{max-width:840px;margin:28px auto 0}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.tag-row .tag-title{font-size:13px;color:var(--text-3);margin-right:4px}
.tag-pill{
  font-size:12.5px;padding:5px 14px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
}
.tag-pill:hover{color:var(--brand);border-color:var(--line-strong);background:var(--glass-strong)}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pn-card{
  display:block;padding:20px 22px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-m);
  transition:all .18s ease;
}
.pn-card:hover{transform:translateY(-3px);border-color:var(--line-strong);background:var(--glass-strong)}
.pn-card em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.pn-card strong{display:block;font-size:16px;margin-top:8px;line-height:1.5;color:var(--text-1)}
.pn-card:hover strong{color:var(--brand)}

/* ============ related ============ */
.section{padding:76px 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.4vw,32px)}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:14.5px;max-width:640px}
.text-link{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.text-link:hover{gap:10px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  box-shadow:var(--shadow-glass);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 46px -26px rgba(31,209,255,.55)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge-cat{
  align-self:flex-start;
  font-size:12px;letter-spacing:.04em;
  color:var(--brand);
  background:rgba(31,209,255,.12);
  border-radius:var(--r-pill);
  padding:4px 12px;
}
.news-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-body h3{color:var(--brand)}
.news-summary{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.news-meta .arrow{color:var(--text-3);transition:all .18s ease}
.news-card:hover .news-meta .arrow{color:var(--brand);transform:translateX(3px)}

/* ============ channel entries ============ */
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.channel-card{
  position:relative;display:block;border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);
  aspect-ratio:4/3;
}
.channel-card img{width:100%;height:100%;object-fit:cover;opacity:.42;transition:transform .4s ease,opacity .3s ease}
.channel-card:hover img{transform:scale(1.06);opacity:.58}
.channel-card .cc-body{
  position:absolute;inset:auto 0 0 0;padding:16px 18px;
  background:linear-gradient(180deg,rgba(6,10,18,0) 0%,rgba(6,10,18,.92) 70%);
}
.channel-card .cc-body h3{font-size:16px;line-height:1.4}
.channel-card .cc-body span{font-size:12.5px;color:var(--text-3)}
.channel-card:hover .cc-body h3{color:var(--brand)}

/* ============ cta ============ */
.cta-block{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:56px 48px;
  text-align:center;
  overflow:hidden;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(31,209,255,.14), transparent 70%),
    repeating-linear-gradient(115deg, rgba(31,209,255,.06) 0 1px, transparent 1px 40px),
    var(--bg-1);
}
.cta-block h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.cta-block p{color:var(--text-2);max-width:620px;margin:0 auto 28px;font-size:15.5px}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ footer ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:60px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.3fr;gap:36px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:9px}
.footer-contact i{color:var(--brand);font-size:13px;width:16px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;text-align:center;
  font-size:13px;color:var(--text-3);
}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
  color:var(--text-1);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .25s ease;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--brand);border-color:var(--line-strong)}

/* ============ responsive ============ */
@media (max-width:1199px){
  .head-grid{grid-template-columns:minmax(0,1fr) 220px;gap:28px}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
  .head-grid{grid-template-columns:1fr;align-items:start}
  .head-side{max-width:420px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:60px 0}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  body{font-size:15.5px}
  .brand-text{font-size:16px}
  .btn-glow{padding:0 16px;font-size:13.5px}
  .article-panel{padding:26px 20px 32px;border-radius:var(--r-m)}
  .prose{font-size:15.8px;line-height:1.9}
  .prose h2{font-size:22px;margin-top:32px}
  .prose h3{font-size:18px}
  .article-section{padding:36px 0 52px}
  .pn-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-block{padding:38px 22px}
}
@media (max-width:575px){
  .nav-top-inner{height:62px;gap:12px}
  .nav-actions .btn-glow{height:38px;padding:0 14px}
  .footer-grid{grid-template-columns:1fr}
  .meta-row{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A12; --bg-1:#0A1220; --bg-2:#0E1A2C;
  --brand:#1FD1FF; --brand-deep:#0B3E7A;
  --accent:#C6FF3D; --accent-warm:#FF6B2C;
  --text-1:#E8F1FF; --text-2:#9FB3CC; --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055); --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --r-s:10px; --r-m:16px; --r-l:22px; --pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px -22px rgba(0,0,0,.85);
  --num:"DIN Alternate","Barlow",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 500px at 12% -8%, rgba(31,209,255,.10), transparent 60%),
    radial-gradient(700px 420px at 92% 4%, rgba(198,255,61,.06), transparent 62%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:#7ee6ff}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--text-1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.num{font-family:var(--num);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ============ 头部：双层导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,10,18,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
@supports not (backdrop-filter: blur(1px)){
  .site-header{background:#070D17}
}
.topbar-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#03121d;font-family:var(--num);font-weight:800;font-size:13px;letter-spacing:.02em;
  box-shadow:0 0 18px rgba(31,209,255,.35);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.search{position:relative;flex:1 1 auto;max-width:400px}
.search i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px}
.search input{
  width:100%;height:40px;border-radius:var(--pill);
  background:var(--glass);border:1px solid var(--line);
  padding:0 16px 0 42px;color:var(--text-1);font-size:14px;
  transition:border-color .18s ease, box-shadow .18s ease;
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,209,255,.18);
}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--pill);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, filter .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand),#12a6d6);
  color:#03121d;
  box-shadow:0 0 0 1px rgba(31,209,255,.35), 0 14px 30px -14px rgba(31,209,255,.7);
}
.btn-glow:hover{filter:brightness(1.06);color:#03121d;box-shadow:0 0 0 1px rgba(31,209,255,.5),0 16px 34px -12px rgba(31,209,255,.8)}
.btn-glass{background:var(--glass);border-color:var(--line);color:var(--text-1)}
.btn-glass:hover{border-color:rgba(31,209,255,.45);color:var(--text-1);transform:translateY(-1px)}
.btn-text{color:var(--text-2);padding:0 4px;height:auto}
.btn-text:hover{color:var(--brand)}
.btn-lg{height:48px;padding:0 26px;font-size:15px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-s);
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
}
.tabs-row{display:flex;align-items:center;gap:16px}
.channel-tabs{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:6px 0 10px;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,#000 92%,transparent);
  mask-image:linear-gradient(90deg,#000 92%,transparent);
}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
  flex:0 0 auto;padding:7px 16px;border-radius:var(--pill);
  font-size:14.5px;color:var(--text-2);border:1px solid transparent;
  transition:color .18s ease, background .18s ease, border-color .18s ease;
}
.channel-tab:hover{color:var(--text-1);background:var(--glass)}
.channel-tab.active{
  color:var(--text-1);background:var(--glass-strong);
  border-color:rgba(31,209,255,.45);
  box-shadow:0 0 0 1px rgba(31,209,255,.12), 0 10px 24px -16px rgba(31,209,255,.9);
}
.offcanvas{background:var(--bg-1);color:var(--text-1);border-right:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.drawer-links a{
  display:block;padding:12px 14px;border-radius:var(--r-s);
  color:var(--text-2);border:1px solid transparent;font-size:15px;
}
.drawer-links a:hover{background:var(--glass);color:var(--text-1);border-color:var(--line)}
.drawer-links a.active{color:var(--text-1);background:var(--glass-strong);border-color:rgba(31,209,255,.4)}

/* ============ 分类页 Banner ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:78px 0 66px;
  background-image:
    linear-gradient(100deg, rgba(6,10,18,.94) 6%, rgba(6,10,18,.72) 54%, rgba(6,10,18,.9) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg, rgba(31,209,255,.05) 0 2px, transparent 2px 26px);
  opacity:.6;
}
.cat-hero .wrap{position:relative;z-index:2}
.pill-brand{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--pill);
  background:rgba(31,209,255,.12);border:1px solid rgba(31,209,255,.32);
  color:var(--brand);font-size:12px;letter-spacing:.04em;font-weight:600;
}
.cat-hero h1{
  margin:20px 0 14px;
  font-size:50px;line-height:1.14;font-weight:800;
}
.cat-hero .lead{
  max-width:660px;color:var(--text-2);font-size:17px;line-height:1.85;
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--pill);
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);font-size:12.5px;letter-spacing:.04em;
}
.badge-soft i{color:var(--accent);font-size:12px}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg-1)}
.crumb{display:flex;align-items:center;gap:10px;padding:14px 0;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--brand)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent);font-size:12px;letter-spacing:.14em;font-weight:600;
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;border-radius:2px}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px}
.tl-item{position:relative;padding-left:76px;padding-bottom:36px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:17px;top:36px;bottom:-6px;width:2px;
  background:linear-gradient(180deg, rgba(31,209,255,.55), rgba(31,209,255,.06));
  border-radius:2px;
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;left:0;top:4px;width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--bg-2);border:1px solid rgba(31,209,255,.5);
  color:var(--accent);font-family:var(--num);font-size:12.5px;font-weight:800;
  box-shadow:0 0 0 4px rgba(31,209,255,.08), 0 0 20px rgba(31,209,255,.32);
}
.tl-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .18s ease, border-color .18s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45)}
.tl-card h3{font-size:20px;margin-bottom:10px}
.tl-card p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.tl-card p:last-child{margin-bottom:0}
.tl-figure{
  margin-top:16px;border-radius:var(--r-s);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);
}
.tl-figure img{width:100%;aspect-ratio:16 / 7;object-fit:cover}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.04em;
  background:rgba(31,209,255,.12);border:1px solid rgba(31,209,255,.24);color:var(--brand);
}
.tag-warm{background:rgba(255,107,44,.12);border-color:rgba(255,107,44,.3);color:var(--accent-warm)}

/* ============ 强度配比数据条 ============ */
.stage-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  background:var(--bg-2);margin-bottom:40px;
}
.stage-cell{padding:24px 22px;border-right:1px solid var(--line);background:linear-gradient(180deg, rgba(31,209,255,.05), transparent)}
.stage-cell:last-child{border-right:none}
.stage-cell .label{font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px}
.stage-cell .value{font-family:var(--num);font-size:32px;font-weight:800;color:var(--accent);line-height:1.1}
.stage-cell .note{font-size:13px;color:var(--text-2);margin-top:8px}
.stage-cell.warm .value{color:var(--accent-warm)}

.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start}
.panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-m);
  padding:26px;box-shadow:var(--shadow-card);
}
.panel h3{font-size:19px;margin-bottom:16px}
.check-list{display:grid;grid-template-columns:1fr;gap:12px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);line-height:1.7;
}
.check-list i{color:var(--brand);margin-top:6px;font-size:12px}
.panel-figure{border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.panel-figure img{width:100%;aspect-ratio:4 / 3;object-fit:cover}
.panel-figure figcaption{font-size:12.5px;color:var(--text-3);padding:12px 16px;background:var(--bg-2)}

/* ============ 行列表 ============ */
.row-list{margin-top:8px;border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:64px 1fr auto;gap:20px;align-items:center;
  padding:22px 18px;border-bottom:1px solid var(--line);
  transition:background .18s ease, border-color .18s ease;
}
.row-item:hover{background:var(--glass);border-bottom-color:rgba(31,209,255,.4)}
.row-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--bg-2);border:1px solid var(--line);color:var(--brand);font-size:19px;
}
.row-body h3{font-size:18px;margin-bottom:6px}
.row-body p{color:var(--text-2);font-size:14.5px;line-height:1.75}
.row-side{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}

/* ============ FAQ ============ */
.faq-list{margin-top:8px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-m);
  background:var(--glass);margin-bottom:12px;overflow:hidden;
  transition:background .2s ease, border-color .2s ease;
}
.faq-item[open]{background:var(--glass-strong);border-color:rgba(31,209,255,.36)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{font-family:var(--num);font-size:13px;font-weight:800;color:var(--accent)}
.faq-chev{margin-left:auto;color:var(--text-3);transition:transform .22s ease, color .22s ease}
.faq-item[open] .faq-chev{transform:rotate(180deg);color:var(--brand)}
.faq-answer{padding:0 22px 22px 58px;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ============ CTA ============ */
.cta-section{
  position:relative;overflow:hidden;
  background:
    radial-gradient(700px 340px at 50% 0%, rgba(31,209,255,.12), transparent 70%),
    repeating-linear-gradient(115deg, rgba(31,209,255,.05) 0 2px, transparent 2px 30px),
    var(--bg-1);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:88px 0;
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.cta-grid h2{font-size:32px;margin-bottom:16px}
.cta-grid p{color:var(--text-2);margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.form-card{
  background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--r-l);
  padding:28px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
@supports not (backdrop-filter: blur(1px)){
  .form-card{background:var(--bg-2)}
}
.form-card h3{font-size:19px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-s);color:var(--text-1);
  padding:11px 14px;font-size:14.5px;font-family:inherit;
  box-shadow:inset 0 1px 0 rgba(0,0,0,.25);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.field textarea{resize:vertical;min-height:84px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,209,255,.18);
}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px}

/* ============ 相关频道 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}
.channel-card{
  display:block;padding:22px;border-radius:var(--r-m);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);color:var(--text-1);
  transition:transform .18s ease, border-color .18s ease;
}
.channel-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);color:var(--text-1)}
.channel-card .idx{font-family:var(--num);font-size:12.5px;font-weight:800;color:var(--accent);letter-spacing:.08em}
.channel-card h3{font-size:17px;margin:12px 0 8px}
.channel-card p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.channel-card.current{border-color:rgba(31,209,255,.5);background:var(--glass-strong)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--text-2);font-size:14px}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14px}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--text-3);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease, visibility .25s;
  cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(31,209,255,.5);color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cat-hero h1{font-size:44px}
}
@media (max-width:991px){
  .search,.btn-text{display:none}
  .nav-toggle{display:grid;place-items:center}
  .topbar-inner{height:62px;gap:14px}
  .section{padding:64px 0}
  .cat-hero{padding:60px 0 52px}
  .cat-hero h1{font-size:38px}
  .two-col{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .stage-bar{grid-template-columns:repeat(2,1fr)}
  .stage-cell:nth-child(2){border-right:none}
  .stage-cell:nth-child(1),.stage-cell:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  body{font-size:15.5px}
  .cat-hero h1{font-size:31px}
  .cat-hero .lead{font-size:15.5px}
  .section-head h2{font-size:24px}
  .cta-grid h2{font-size:24px}
  .timeline{padding-left:0}
  .tl-item{padding-left:58px}
  .tl-item::before{left:15px}
  .tl-dot{width:32px;height:32px;font-size:11.5px}
  .tl-card{padding:20px}
  .tl-card h3{font-size:18px}
  .row-item{grid-template-columns:1fr;gap:14px;padding:20px 6px}
  .row-side{justify-content:flex-start}
  .faq-answer{padding:0 18px 20px 18px}
  .footer-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .stage-bar{grid-template-columns:1fr}
  .stage-cell{border-right:none;border-bottom:1px solid var(--line)}
  .stage-cell:last-child{border-bottom:none}
  .btn{height:42px}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A12;
  --bg-1:#0A1220;
  --bg-2:#0E1A2C;
  --brand:#1FD1FF;
  --brand-deep:#0B3E7A;
  --accent:#C6FF3D;
  --accent-warm:#FF6B2C;
  --text-1:#E8F1FF;
  --text-2:#9FB3CC;
  --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px -22px rgba(0,0,0,.85);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow",ui-monospace,"SF Mono",Consolas,var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text-1);text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease,transform .18s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:800;color:var(--text-1)}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1280px}}

/* ============ 按钮体系 ============ */
.btn-glow,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;
}
.btn-glow{background:linear-gradient(120deg,var(--brand),#3CE6D2);color:#04121C;box-shadow:0 0 0 1px rgba(31,209,255,.45),0 10px 30px -14px rgba(31,209,255,.95)}
.btn-glow:hover,.btn-glow:focus{color:#04121C;filter:brightness(1.06);box-shadow:0 0 0 1px rgba(31,209,255,.7),0 12px 36px -12px rgba(31,209,255,1)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text-1);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:rgba(31,209,255,.5);color:var(--brand);background:var(--glass-strong)}
.btn-line{background:transparent;color:var(--brand);padding:0 4px;height:auto}
.btn-line:hover{text-decoration:underline;text-underline-offset:4px}
.btn-lg{height:48px;padding:0 26px;font-size:15px}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(6,10,18,.78);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;border-radius:var(--r-sm);
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#04121C;font-family:var(--font-num);font-weight:700;font-size:14px;letter-spacing:.02em;
  box-shadow:0 0 18px rgba(31,209,255,.35);
}
.brand-text{font-size:18px;color:var(--text-1);letter-spacing:-.01em}
.brand:hover .brand-text{color:var(--brand)}
.nav-search{position:relative;flex:1 1 auto;max-width:400px}
.nav-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:13px}
.nav-search input{
  width:100%;height:40px;padding:0 16px 0 36px;border-radius:var(--r-pill);
  background:var(--bg-2);border:1px solid var(--line);color:var(--text-1);font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:rgba(31,209,255,.55);box-shadow:0 0 0 3px rgba(31,209,255,.18)}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.link-quiet{font-size:14px;color:var(--text-2);white-space:nowrap}
.link-quiet:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:15px;
}
.nav-toggle:hover{border-color:rgba(31,209,255,.5);color:var(--brand)}
.channel-tabs{
  display:flex;align-items:center;gap:8px;
  max-width:1200px;margin:0 auto;padding:0 24px;height:50px;
  overflow-x:auto;scrollbar-width:none;
}
.channel-tabs::-webkit-scrollbar{display:none}
@media (min-width:1400px){.channel-tabs{max-width:1280px}}
.channel-tab{
  flex:0 0 auto;padding:7px 16px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text-2);border:1px solid transparent;white-space:nowrap;
}
.channel-tab:hover{color:var(--text-1);background:var(--glass)}
.channel-tab.active{
  color:var(--brand);background:rgba(31,209,255,.10);border-color:rgba(31,209,255,.45);
  box-shadow:0 0 18px -6px rgba(31,209,255,.75);
}
.mobile-drawer{background:var(--bg-1);color:var(--text-1);border-left:1px solid var(--line)}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--line);color:var(--text-1)}
.drawer-nav{display:grid;gap:6px;margin-bottom:24px}
.drawer-link{padding:12px 14px;border-radius:var(--r-sm);font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-link:hover{background:var(--glass);color:var(--text-1)}
.drawer-link.active{color:var(--brand);background:rgba(31,209,255,.1);border-color:rgba(31,209,255,.35)}
.drawer-cta{width:100%}

/* ============ 页头 Banner ============ */
.page-banner{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(6,10,18,.55) 0%,rgba(6,10,18,.9) 60%,var(--bg-0) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 340px at 12% 0%,rgba(31,209,255,.18),transparent 72%);
}
.banner-inner{position:relative;z-index:2;padding:52px 0 72px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--brand)}
.banner-kicker{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);
  font-size:12.5px;letter-spacing:.14em;color:var(--accent);margin-bottom:14px;
}
.banner-kicker::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7}
h1.banner-title{font-size:50px;line-height:1.14;margin-bottom:16px}
.banner-sub{max-width:730px;font-size:16.5px;color:var(--text-2);margin-bottom:24px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(31,209,255,.12);color:var(--brand);border:1px solid rgba(31,209,255,.28);
}
.pill.accent{background:rgba(198,255,61,.12);color:var(--accent);border-color:rgba(198,255,61,.3)}
.pill.muted{background:var(--glass);color:var(--text-2);border-color:var(--line)}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;grid-template-columns:repeat(6,1fr);
  margin-top:-44px;position:relative;z-index:6;
  background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);overflow:hidden;
}
.stat-cell{padding:22px 18px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1.05;color:var(--text-1);letter-spacing:-.01em}
.stat-num em{font-style:normal;font-size:14px;color:var(--accent);margin-left:3px;font-weight:600}
.stat-label{font-size:12.5px;color:var(--text-3);margin-top:6px;letter-spacing:.02em}

/* ============ 通用板块 ============ */
.section{padding:92px 0}
.section.alt{background:var(--bg-1)}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);
  font-size:12.5px;letter-spacing:.14em;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand)}
.sec-title{font-size:32px;line-height:1.28;margin-bottom:14px}
.sec-desc{font-size:15.5px;color:var(--text-2);margin:0;max-width:700px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.head-row .section-head{margin-bottom:0}

/* ============ 指标卡网格 2×3 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.metric-card{
  display:grid;grid-template-columns:136px 1fr;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-card);backdrop-filter:blur(10px);
  transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.metric-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);background:var(--glass-strong)}
.metric-thumb{position:relative;background:var(--bg-2);overflow:hidden}
.metric-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1;opacity:.92}
.metric-idx{
  position:absolute;top:10px;left:10px;font-family:var(--font-num);font-size:12px;
  color:var(--accent);background:rgba(6,10,18,.75);border:1px solid rgba(198,255,61,.35);
  border-radius:var(--r-pill);padding:2px 9px;letter-spacing:.06em;
}
.metric-body{padding:20px 22px}
.metric-body h3{font-size:19px;line-height:1.4;margin-bottom:8px}
.metric-body p{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0 0 12px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;letter-spacing:.04em;color:var(--text-2);background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 10px}

/* ============ 拆解面板 ============ */
.panel-split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.panel-text p{font-size:15.5px;color:var(--text-2)}
.check-list{display:grid;gap:14px;margin-top:26px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 12px rgba(31,209,255,.9);
}
.check-list li b{color:var(--text-1);font-weight:600}
.data-panel{
  background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-card);backdrop-filter:blur(12px);
}
.data-panel-hd{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:16px;margin-bottom:22px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.data-panel-hd strong{color:var(--text-1);font-size:14px;font-weight:600}
.bar-row{margin-bottom:20px}
.bar-row:last-child{margin-bottom:0}
.bar-meta{display:flex;justify-content:space-between;align-items:baseline;font-size:13.5px;color:var(--text-2);margin-bottom:8px}
.bar-meta b{font-family:var(--font-num);font-size:17px;font-weight:600;color:var(--accent)}
.bar-track{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 14px -2px rgba(31,209,255,.85)}
.bar-fill.lime{background:linear-gradient(90deg,#4C6B00,var(--accent));box-shadow:0 0 14px -2px rgba(198,255,61,.75)}

/* ============ 场景条 ============ */
.scene-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.scene-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.scene-item:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);background:var(--glass-strong)}
.scene-item i{font-size:18px;color:var(--brand)}
.scene-item h3{font-size:17px;margin:14px 0 8px}
.scene-item p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0}

/* ============ FAQ ============ */
.faq{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:background .18s ease,border-color .18s ease;
}
.faq-item[open]{background:var(--glass-strong);border-color:rgba(31,209,255,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-q{display:flex;align-items:baseline;gap:12px;border-left:3px solid var(--brand);padding-left:12px}
.faq-num{font-family:var(--font-num);font-size:13px;color:var(--accent);letter-spacing:.08em}
.faq-icon{margin-left:auto;margin-top:6px;font-size:13px;color:var(--text-3);transition:transform .22s ease,color .22s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{padding:0 22px 20px 37px;font-size:15px;line-height:1.85;color:var(--text-2);margin:0}

/* ============ 相关频道 ============ */
.rel-grid{display:grid;gap:22px}
.rel-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.rel-card{
  display:block;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);background:var(--glass-strong)}
.rel-card .rel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.rel-card h3{font-size:16.5px;margin:0}
.rel-card p{font-size:13.5px;line-height:1.75;color:var(--text-2);margin:0}
.rel-card .arrow{color:var(--brand);font-size:13px}
.rel-tag{font-size:11.5px;letter-spacing:.06em;color:var(--accent);border:1px solid rgba(198,255,61,.3);background:rgba(198,255,61,.1);border-radius:var(--r-pill);padding:2px 9px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);
  padding:56px 48px;text-align:center;box-shadow:var(--shadow-card);
  background-image:linear-gradient(120deg,rgba(11,62,122,.72),rgba(6,10,18,.94)),url("/assets/images/coverpic/cover-9.png");
  background-size:cover;background-position:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 22px);
}
.cta-band::after{
  content:"";position:absolute;top:-40%;left:50%;transform:translateX(-50%);
  width:640px;height:420px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(31,209,255,.22),transparent 70%);
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-band h2{font-size:32px;line-height:1.3;margin-bottom:14px}
.cta-band p{color:var(--text-2);font-size:15.5px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{margin-top:22px;font-size:13px;color:var(--text-3)}
.cta-note a{color:var(--brand)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text-1)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:grid;gap:12px}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:flex-start;gap:10px}
.footer-contact i{color:var(--brand);font-size:13px;margin-top:5px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;text-align:center;
  font-size:13px;color:var(--text-3);
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;background:var(--glass-strong);border:1px solid var(--line);
  color:var(--text-1);backdrop-filter:blur(10px);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,color .18s ease,border-color .18s ease;z-index:900;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{color:var(--brand);border-color:rgba(31,209,255,.5)}

@supports not (backdrop-filter:blur(1px)){
  .site-header{background:rgba(6,10,18,.96)}
  .stat-bar{background:rgba(14,26,44,.96)}
  .btn-ghost,.to-top{background:var(--bg-2)}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .metric-grid{gap:20px}
  .metric-card{grid-template-columns:120px 1fr}
  .panel-split{gap:32px}
}
@media (max-width:991px){
  .nav-search{display:none}
  .nav-toggle{display:grid;place-items:center}
  .nav-actions{gap:12px}
  .link-quiet{display:none}
  .stat-bar{grid-template-columns:repeat(3,1fr)}
  .stat-cell:nth-child(3n){border-right:0}
  .stat-cell:nth-child(-n+3){border-bottom:1px solid var(--line)}
  .metric-grid{grid-template-columns:1fr}
  .panel-split{grid-template-columns:1fr}
  .scene-strip{grid-template-columns:repeat(2,1fr)}
  .rel-grid.cols-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:72px 0}
  h1.banner-title{font-size:38px}
  .sec-title{font-size:27px}
  .cta-band{padding:44px 28px}
  .cta-band h2{font-size:27px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .channel-tabs{padding:0 18px}
  body{font-size:15.5px}
  .banner-inner{padding:36px 0 60px}
  h1.banner-title{font-size:31px}
  .banner-sub{font-size:15px}
  .section{padding:56px 0}
  .sec-title{font-size:24px}
  .stat-num{font-size:25px}
  .stat-cell{padding:18px 14px}
  .metric-card{grid-template-columns:1fr}
  .metric-thumb img{aspect-ratio:16/9}
  .scene-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .cta-band h2{font-size:23px}
  .faq-item summary{font-size:15px;padding:16px 18px}
  .faq-a{padding:0 18px 18px 33px}
  .head-row{flex-direction:column;align-items:flex-start;gap:14px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:575px){
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-cell{border-right:1px solid var(--line)}
  .stat-cell:nth-child(3n){border-right:1px solid var(--line)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(-n+3){border-bottom:1px solid var(--line)}
  .stat-cell:nth-child(-n+4){border-bottom:1px solid var(--line)}
  .brand-text{font-size:16px}
  .btn-glow,.btn-ghost{padding:0 16px;font-size:13.5px}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg-0:#060A12;
  --bg-1:#0A1220;
  --bg-2:#0E1A2C;
  --brand:#1FD1FF;
  --brand-deep:#0B3E7A;
  --accent:#C6FF3D;
  --accent-warm:#FF6B2C;
  --text-1:#E8F1FF;
  --text-2:#9FB3CC;
  --text-3:#6B7F99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(140,200,255,.16);
  --line-soft:rgba(140,200,255,.09);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.06),0 18px 40px -22px rgba(0,0,0,.85);
  --ease:180ms ease;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Rajdhani","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::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-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    repeating-linear-gradient(115deg,rgba(31,209,255,.05) 0 1px,transparent 1px 120px),
    radial-gradient(circle at 82% -10%,rgba(31,209,255,.12),transparent 58%),
    radial-gradient(circle at 6% 12%,rgba(11,62,122,.35),transparent 55%);
  opacity:.9;
}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--text-1);}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{
  background:rgba(6,10,18,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04121C;font-family:var(--font-num);font-weight:700;font-size:15px;
  box-shadow:0 0 18px -6px rgba(31,209,255,.9);
}
.brand-text{font-size:18px;font-weight:800;color:var(--text-1);letter-spacing:-.01em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand);}
.nav-search{position:relative;flex:1 1 auto;max-width:400px;display:flex;align-items:center;}
.nav-search i{position:absolute;left:16px;color:var(--text-3);font-size:14px;pointer-events:none;}
.nav-search input{
  width:100%;height:40px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-1);font-size:14px;padding:0 18px 0 42px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  outline:none;background:var(--bg-2);
  border-color:rgba(31,209,255,.7);
  box-shadow:0 0 0 3px rgba(31,209,255,.18);
}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--brand) 0%,#0F9FD6 100%);
  color:#04121C;font-weight:700;font-size:14px;border:1px solid rgba(31,209,255,.6);
  box-shadow:0 0 0 1px rgba(31,209,255,.25),0 14px 30px -16px rgba(31,209,255,.95);
  transition:filter var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-glow:hover{color:#04121C;filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(31,209,255,.4),0 18px 34px -14px rgba(31,209,255,1);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-1);font-size:14px;font-weight:500;
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(31,209,255,.45);color:var(--text-1);transform:translateY(-1px);}
.btn-glow.lg,.btn-ghost.lg{height:48px;padding:0 26px;font-size:15px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  font-size:16px;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(31,209,255,.45);}
.tabsbar{
  background:rgba(10,18,32,.66);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.channel-tabs{display:flex;gap:8px;overflow-x:auto;padding:8px 0;scrollbar-width:none;}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tab{
  display:inline-block;white-space:nowrap;padding:8px 18px;border-radius:var(--r-pill);
  color:var(--text-2);font-size:14px;border:1px solid transparent;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.channel-tab:hover{color:var(--text-1);background:var(--glass);}
.channel-tab.active{
  color:#04121C;font-weight:600;background:linear-gradient(135deg,var(--brand) 0%,#12A5D8 100%);
  border-color:rgba(31,209,255,.55);
  box-shadow:0 12px 26px -16px rgba(31,209,255,.95);
}
.offcanvas.nav-drawer{
  --bs-offcanvas-bg:var(--bg-1);
  --bs-offcanvas-color:var(--text-1);
  --bs-offcanvas-width:320px;
  background:var(--bg-1);border-left:1px solid var(--line);
}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px;}
.nav-drawer .offcanvas-body{padding:20px 22px;}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-links a{
  display:block;padding:12px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:15px;border:1px solid transparent;
}
.drawer-links a:hover{background:var(--glass);color:var(--text-1);}
.drawer-links a.active{background:rgba(31,209,255,.12);color:var(--brand);border-color:rgba(31,209,255,.35);}
.drawer-search{position:relative;margin-bottom:20px;}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-sm);
  background:var(--bg-2);border:1px solid var(--line);color:var(--text-1);
  padding:0 16px 0 40px;font-size:14px;
}
.drawer-search i{position:absolute;left:14px;top:15px;color:var(--text-3);}
.btn-close{filter:invert(1) grayscale(1) brightness(1.8);}

/* ============ 面包屑与 Banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(6,10,18,.55) 0%,rgba(6,10,18,.94) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:60px 0 56px;
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(198,255,61,.07) 0 2px,transparent 2px 90px);
  opacity:.35;
}
.banner-inner{position:relative;z-index:2;max-width:840px;}
.crumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:rgba(107,127,153,.6);}
.crumb .current{color:var(--brand);}
.banner-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.banner-brand::before{content:"";width:26px;height:2px;background:var(--brand);display:block;}
.page-banner h1{
  font-size:clamp(30px,4vw,52px);font-weight:800;line-height:1.15;
  color:var(--text-1);
}
.banner-note{margin-top:18px;font-size:16px;color:var(--text-2);line-height:1.85;max-width:660px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(31,209,255,.12);color:var(--brand);border:1px solid rgba(31,209,255,.28);
}
.chip.accent{background:rgba(198,255,61,.12);color:var(--accent);border-color:rgba(198,255,61,.3);}
.chip.warm{background:rgba(255,107,44,.12);color:var(--accent-warm);border-color:rgba(255,107,44,.3);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;}
.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:720px;margin-bottom:40px;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:block;}
.section-title{font-size:clamp(24px,3vw,33px);font-weight:800;margin:14px 0 14px;}
.section-desc{color:var(--text-2);font-size:15.5px;line-height:1.85;}

/* ============ 图文开场 ============ */
.lead-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.lead-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:var(--bg-2);aspect-ratio:16/11;position:relative;
}
.lead-figure img{width:100%;height:100%;object-fit:cover;}
.lead-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:12.5px;color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(6,10,18,.92));
}
.lead-copy p{color:var(--text-2);font-size:15.5px;line-height:1.9;margin-bottom:14px;}
.lead-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.lead-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.lead-points i{color:var(--accent);margin-top:5px;font-size:13px;}

/* ============ 对比表 ============ */
.table-wrap{
  margin-top:36px;border-radius:var(--r-md);border:1px solid var(--line);
  overflow-x:auto;background:var(--bg-2);box-shadow:var(--shadow-card);
}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
table.compare thead th{
  background:var(--glass-strong);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  color:var(--text-1);font-size:13px;font-weight:600;letter-spacing:.06em;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare tbody td{
  padding:18px 22px;color:var(--text-2);line-height:1.78;
  border-bottom:1px solid var(--line-soft);vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody tr{transition:background var(--ease);}
table.compare tbody tr:hover{background:rgba(31,209,255,.05);}
table.compare td:first-child{color:var(--text-1);font-weight:600;}
table.compare td:first-child span{display:block;font-size:12.5px;color:var(--text-3);font-weight:400;margin-top:4px;}
.table-note{margin-top:16px;font-size:13px;color:var(--text-3);}

/* ============ 追踪建议双栏 ============ */
.tips-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:48px;}
.tip-col{
  padding:26px;border-radius:var(--r-md);background:var(--glass);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.tip-col:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);}
.tip-col h3{font-size:19px;font-weight:600;margin-bottom:14px;color:var(--text-1);}
.tip-col h3 em{font-family:var(--font-num);color:var(--accent);font-style:normal;margin-right:8px;font-size:14px;}
.tip-col li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:10px;}
.tip-col li:last-child{margin-bottom:0;}
.tip-col li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);
  overflow:hidden;transition:background var(--ease),border-color var(--ease);
}
.faq-item[open]{background:var(--glass-strong);border-color:rgba(31,209,255,.35);}
.faq-item:hover{border-color:rgba(31,209,255,.32);}
.faq-q{
  display:flex;align-items:center;gap:14px;
  padding:20px 58px 20px 22px;cursor:pointer;position:relative;
  font-size:16.5px;font-weight:600;color:var(--text-1);list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--text-2);line-height:1;transition:transform var(--ease),color var(--ease);
}
.faq-item[open] .faq-q::after{transform:translateY(-50%) rotate(45deg);color:var(--brand);}
.faq-num{
  font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--accent);
  border-left:3px solid var(--brand);padding-left:10px;line-height:1;flex:0 0 auto;
}
.faq-a{padding:0 26px 22px 26px;color:var(--text-2);font-size:15px;line-height:1.85;}
.faq-a strong{color:var(--text-1);font-weight:600;}

/* ============ 频道导航 ============ */
.channel-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:8px;}
.channel-row{
  display:flex;align-items:center;gap:18px;
  padding:20px 22px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--glass);color:var(--text-1);
  transition:transform var(--ease),border-color var(--ease),background var(--ease);
}
.channel-row:hover{transform:translateY(-3px);border-color:rgba(31,209,255,.45);background:var(--glass-strong);color:var(--text-1);}
.channel-row .idx{font-family:var(--font-num);font-size:14px;font-weight:600;color:var(--accent);flex:0 0 auto;}
.channel-row h3{font-size:17px;font-weight:600;margin-bottom:4px;color:var(--text-1);}
.channel-row p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.6;}
.channel-row .arrow{margin-left:auto;color:var(--text-3);transition:transform var(--ease),color var(--ease);}
.channel-row:hover .arrow{color:var(--brand);transform:translateX(4px);}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(11,62,122,.6) 0%,rgba(6,10,18,.94) 70%);
  padding:60px 48px;text-align:center;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(115deg,rgba(255,255,255,.055) 0 2px,transparent 2px 110px),
    radial-gradient(circle at 78% 16%,rgba(31,209,255,.22),transparent 58%);
  opacity:.8;
}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:800;position:relative;z-index:1;}
.cta-band > p{position:relative;z-index:1;margin:16px auto 0;max-width:620px;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.feed-form{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;max-width:560px;margin:28px auto 0;}
.feed-form label{width:100%;text-align:left;font-size:13px;color:var(--text-2);margin-bottom:-4px;}
.feed-form input{
  flex:1 1 260px;height:48px;border-radius:var(--r-sm);
  background:var(--bg-2);border:1px solid var(--line);color:var(--text-1);
  padding:0 16px;font-size:15px;box-shadow:inset 0 2px 6px rgba(0,0,0,.35);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.feed-form input::placeholder{color:var(--text-3);}
.feed-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,255,.18);}
.feed-form input.error{border-color:var(--accent-warm);box-shadow:0 0 0 3px rgba(255,107,44,.18);}
.form-note{position:relative;z-index:1;margin-top:16px;font-size:13.5px;color:var(--text-3);min-height:20px;}
.form-note.ok{color:var(--accent);}
.cta-meta{position:relative;z-index:1;margin-top:26px;display:flex;flex-wrap:wrap;gap:24px;justify-content:center;font-size:13.5px;color:var(--text-2);}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:var(--brand);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--line);
  padding:64px 0 28px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;font-size:13px;border-radius:9px;}
.footer-brand .brand-text{font-size:17px;font-weight:800;color:var(--text-1);}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--text-2);}
.footer-contact i{color:var(--brand);margin-right:8px;width:16px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-soft);
  text-align:center;font-size:13px;color:var(--text-3);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass-strong);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--text-1);cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),border-color var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{border-color:rgba(31,209,255,.5);color:var(--brand);}

@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .topbar,.tabsbar{background:#080E1A;}
  .to-top{background:#101B2C;}
  table.compare thead th{background:#152439;}
}

/* ============ 响应式 ============ */
@media (max-width:991px){
  .nav-search{max-width:240px;}
  .topbar-actions .btn-ghost{display:none;}
  .lead-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .channel-tabs{-webkit-mask-image:linear-gradient(90deg,#000 0,#000 88%,transparent 100%);mask-image:linear-gradient(90deg,#000 0,#000 88%,transparent 100%);}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .wrap{padding:0 18px;}
  .topbar-inner{height:62px;gap:12px;}
  .nav-search{display:none;}
  .topbar-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .brand-text{font-size:16.5px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .page-banner{padding:40px 0 40px;}
  .banner-note{font-size:15px;}
  .tips-grid{grid-template-columns:1fr;gap:16px;}
  .channel-list{grid-template-columns:1fr;}
  .faq-q{font-size:15.5px;padding:18px 50px 18px 18px;}
  .faq-a{padding:0 18px 18px 18px;}
  .cta-band{padding:40px 22px;}
  .cta-meta{gap:14px;flex-direction:column;align-items:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .page-banner h1{font-size:29px;}
  .btn-glow,.btn-ghost{width:100%;}
  .feed-form input{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}